RECRUIT

SAIMEMORY is hiring engineers for current and future projects in Japan.

We are looking for motivated engineers who can be involved in the development of next-generation memory technology.

Mid-Career Recruitment

Engineer

Semiconductor Architect
(Chip / System Architect)
Program Manager
Digital IC Design Engineer
Digital Verification Engineer
Analog IC Design Engineer
Mixed-Signal Verification Engineer
RF Device Design Engineer
Embedded Software / Firmware Engineer (Semiconductor Evaluation & Verification)

Corporate Strategy

Manager, Corporate Strategy Planning
Manager, Business Operations & PMO
Manager, Alliance & Governance

Engineer

Semiconductor Architect
(Chip / System Architect)

Job Description

Mission	Design and drive system architectures for mixed-signal semiconductor chips and advanced 3D packaging technologies. Define technical concepts, product specifications, IP architecture, analog/digital partitioning, and performance targets to transform research outcomes into commercially viable semiconductor products.
Key Responsibilities	Define system and chip architectures for mixed-signal semiconductor products. Develop chip configurations, IP architectures, and interface specifications. Perform architectural design and trade-off analysis considering performance, power consumption, cost, and manufacturability. Coordinate technical discussions and specification alignment with internal engineers and external partners. Optimize system architecture based on prototype evaluation and validation results.
Required Qualifications (MUST)	Experience in one or more of the following: Development of SoCs, mixed-signal ICs, memory, or communication systems System specification or architecture design for mixed-signal chips or systems Definition of chip specifications, IP specifications, or system specifications Fundamental knowledge of advanced packaging technologies, including 3D integration Strong communication skills to lead technical discussions, specification reviews, and design reviews in English.
Preferred Qualifications	Knowledge of and experience with memory, PHYs, SerDes, and high-speed interfaces Experience with 3D integration, chiplets, and advanced packaging technologies Experience with RTL design, semiconductor evaluation, and production ramp-up Experience collaborating with foundries, OSATs, and IP vendors Proven experience leading new semiconductor product development as a chip or system architect

Employment Terms
(Common to All Positions)

Employment Type	・Hired as a Special Fixed-Term Employee of SoftBank Corp. ・Upon joining, you will be seconded to SAIMEMORY Co., Ltd. (100%). ・Secondment means that you remain an employee of SoftBank Corp. while working for another company. About the Special Fixed-Term Employee status ・This employment category is intended for professionals with specialized skills that are recognized as particularly necessary for SoftBank's business operations. It is a fixed-term employee classification.
Cntract period	・Through March 31, 2028. Beginning April 1, 2028, contract renewal or conversion to a different employment category will be considered based on a comprehensive evaluation of: ・Business needs ・Progress of assigned duties ・Individual capabilities ・Job performance ・Work attitude ・The company's overall business conditions
Work Location	Tokyo Portcity Takeshiba Office Tower, WeWork 1-7-1 Kaigan, Minato-ku, Tokyo ・A work-from-home environment is available.
Working Hours	Standard working hours 9:00 AM – 5:45 PM Actual working hours: 7 hours 45 minutes Lunch break: 12:00 PM – 1:00 PM (1 hour) Working arrangements Super Flextime System (no core hours) Work Interval System Employees are guaranteed at least 10 consecutive hours of rest between the end of one workday and the beginning of the next. Overtime work may be required.
Holidays	Regular holidays ・Saturdays ・Sundays ・Japanese national holidays ・Year-end/New Year holidays (December 29 – January 3) Annual Paid Leave ・During the first year: 3–11 days, depending on the month of joining ・From the second year onward: 16 days ・Maximum annual entitlement: 21 days ・Unused leave may be carried over to the following fiscal year. Other Leave ・Marriage leave ・Spouse childbirth leave ・Child's marriage leave ・Nursing care leave ・Bereavement leave ・Leave for hospital visits and cancer treatment ・Other special leave as provided by company policy
Benefits	Social insurance coverage includes: ・Health Insurance ・Employment Insurance ・Workers' Accident Compensation Insurance ・Employees' Pension Insurance Employees aged 65 or older may also be eligible for Employment Insurance if they satisfy the applicable legal requirements.
Compaensation	Monthly Salary ¥450,000 – ¥1,200,000 Expected Annual Salary ¥6,500,000 – ¥18,000,000 Annual salary consists of: ・Monthly base salary ・Overtime allowance based on actual hours worked ・Bonuses The overtime allowance shown is only an estimate. Actual overtime pay varies according to the number of overtime hours worked (the estimate assumes 30 hours of overtime per month). The upper end of the salary range is not fixed and may be exceeded for exceptional candidates.
Bounses	Bonuses are paid twice per year: ・Summer bonus (June) ・Winter bonus (December) The standard annual bonus is approximately 3 months' salary, although the amount varies according to company performance and individual performance evaluations.

Program Manager

Job Description

Mission	Lead end-to-end semiconductor chip development or advanced 3D packaging technology projects. Coordinate cross-functional development teams and external partners while managing schedules, deliverables, issues, and risks to ensure smooth execution from requirements definition through design, prototyping, and product evaluation.
Key Responsibilities	Plan and manage semiconductor chip or advanced 3D packaging development projects. Coordinate development teams, external partners, and stakeholders to drive project execution. Manage project requirements, schedules, deliverables, and risks. Define and track project milestones. Facilitate meetings, manage action items, and continuously improve project management processes.
Required Qualifications (MUST)	Experience in one or more of the following: Semiconductor chip development, advanced 3D packaging technologies, advanced packaging, electronic components, or hardware development Project management, project leadership, or PMO experience in technology development projects Managing schedules, issues, and risks across multiple stakeholders Coordinating and negotiating with engineers, partners, and vendors across organizations Business-level communication skills in English.
Preferred Qualifications	Experience with semiconductor chip development, tapeout, prototype evaluation, and production ramp-up Knowledge of 3D integration, chiplets, and advanced packaging technologies Experience managing projects with foundries, OSATs, design, and manufacturing partners Experience leading global or cross-border development projects with overseas teams and partners Experience managing startup initiatives or advanced technology development projects

Employment Terms
(Common to All Positions)

Employment Type	・Hired as a Special Fixed-Term Employee of SoftBank Corp. ・Upon joining, you will be seconded to SAIMEMORY Co., Ltd. (100%). ・Secondment means that you remain an employee of SoftBank Corp. while working for another company. About the Special Fixed-Term Employee status ・This employment category is intended for professionals with specialized skills that are recognized as particularly necessary for SoftBank's business operations. It is a fixed-term employee classification.
Cntract period	・Through March 31, 2028. Beginning April 1, 2028, contract renewal or conversion to a different employment category will be considered based on a comprehensive evaluation of: ・Business needs ・Progress of assigned duties ・Individual capabilities ・Job performance ・Work attitude ・The company's overall business conditions
Work Location	Tokyo Portcity Takeshiba Office Tower, WeWork 1-7-1 Kaigan, Minato-ku, Tokyo ・A work-from-home environment is available.
Working Hours	Standard working hours 9:00 AM – 5:45 PM Actual working hours: 7 hours 45 minutes Lunch break: 12:00 PM – 1:00 PM (1 hour) Working arrangements Super Flextime System (no core hours) Work Interval System Employees are guaranteed at least 10 consecutive hours of rest between the end of one workday and the beginning of the next. Overtime work may be required.
Holidays	Regular holidays ・Saturdays ・Sundays ・Japanese national holidays ・Year-end/New Year holidays (December 29 – January 3) Annual Paid Leave ・During the first year: 3–11 days, depending on the month of joining ・From the second year onward: 16 days ・Maximum annual entitlement: 21 days ・Unused leave may be carried over to the following fiscal year. Other Leave ・Marriage leave ・Spouse childbirth leave ・Child's marriage leave ・Nursing care leave ・Bereavement leave ・Leave for hospital visits and cancer treatment ・Other special leave as provided by company policy
Benefits	Social insurance coverage includes: ・Health Insurance ・Employment Insurance ・Workers' Accident Compensation Insurance ・Employees' Pension Insurance Employees aged 65 or older may also be eligible for Employment Insurance if they satisfy the applicable legal requirements.
Compaensation	Monthly Salary ¥450,000 – ¥1,200,000 Expected Annual Salary ¥6,500,000 – ¥18,000,000 Annual salary consists of: ・Monthly base salary ・Overtime allowance based on actual hours worked ・Bonuses The overtime allowance shown is only an estimate. Actual overtime pay varies according to the number of overtime hours worked (the estimate assumes 30 hours of overtime per month). The upper end of the salary range is not fixed and may be exceeded for exceptional candidates.
Bounses	Bonuses are paid twice per year: ・Summer bonus (June) ・Winter bonus (December) The standard annual bonus is approximately 3 months' salary, although the amount varies according to company performance and individual performance evaluations.

Digital IC Design Engineer

Job Description

Mission	Design digital integrated circuits. Contribute to the functionality and performance of mixed-signal semiconductor chips through the design of control logic, datapaths, interface circuits, and related digital blocks.
Key Responsibilities	Design RTL for control logic, datapaths, and interface circuits. Define microarchitecture and hardware specifications. Design and integrate SoC-level digital systems. Collaborate with analog design, physical design, and verification teams to optimize chip design. Evaluate prototype silicon, analyze issues, and improve designs.
Required Qualifications (MUST)	Experience in one or more of the following: Digital circuit design RTL design SoC, ASIC, or FPGA development Digital circuit architecture or specification development
Preferred Qualifications	Experience with SystemVerilog or Verilog-based design Experience designing memory controllers and interface circuits Knowledge of DFT, Scan, and MBIST Experience with low-power design and SoC integration Experience with design automation using Python Technical communication skills in English

Employment Terms
(Common to All Positions)

Employment Type	・Hired as a Special Fixed-Term Employee of SoftBank Corp. ・Upon joining, you will be seconded to SAIMEMORY Co., Ltd. (100%). ・Secondment means that you remain an employee of SoftBank Corp. while working for another company. About the Special Fixed-Term Employee status ・This employment category is intended for professionals with specialized skills that are recognized as particularly necessary for SoftBank's business operations. It is a fixed-term employee classification.
Cntract period	・Through March 31, 2028. Beginning April 1, 2028, contract renewal or conversion to a different employment category will be considered based on a comprehensive evaluation of: ・Business needs ・Progress of assigned duties ・Individual capabilities ・Job performance ・Work attitude ・The company's overall business conditions
Work Location	Tokyo Portcity Takeshiba Office Tower, WeWork 1-7-1 Kaigan, Minato-ku, Tokyo ・A work-from-home environment is available.
Working Hours	Standard working hours 9:00 AM – 5:45 PM Actual working hours: 7 hours 45 minutes Lunch break: 12:00 PM – 1:00 PM (1 hour) Working arrangements Super Flextime System (no core hours) Work Interval System Employees are guaranteed at least 10 consecutive hours of rest between the end of one workday and the beginning of the next. Overtime work may be required.
Holidays	Regular holidays ・Saturdays ・Sundays ・Japanese national holidays ・Year-end/New Year holidays (December 29 – January 3) Annual Paid Leave ・During the first year: 3–11 days, depending on the month of joining ・From the second year onward: 16 days ・Maximum annual entitlement: 21 days ・Unused leave may be carried over to the following fiscal year. Other Leave ・Marriage leave ・Spouse childbirth leave ・Child's marriage leave ・Nursing care leave ・Bereavement leave ・Leave for hospital visits and cancer treatment ・Other special leave as provided by company policy
Benefits	Social insurance coverage includes: ・Health Insurance ・Employment Insurance ・Workers' Accident Compensation Insurance ・Employees' Pension Insurance Employees aged 65 or older may also be eligible for Employment Insurance if they satisfy the applicable legal requirements.
Compaensation	Monthly Salary ¥450,000 – ¥1,200,000 Expected Annual Salary ¥6,500,000 – ¥18,000,000 Annual salary consists of: ・Monthly base salary ・Overtime allowance based on actual hours worked ・Bonuses The overtime allowance shown is only an estimate. Actual overtime pay varies according to the number of overtime hours worked (the estimate assumes 30 hours of overtime per month). The upper end of the salary range is not fixed and may be exceeded for exceptional candidates.
Bounses	Bonuses are paid twice per year: ・Summer bonus (June) ・Winter bonus (December) The standard annual bonus is approximately 3 months' salary, although the amount varies according to company performance and individual performance evaluations.

Digital Verification Engineer

Job Description

Mission	Verify the functionality of digital integrated circuits. Build verification environments, execute functional verification, and perform debugging to improve RTL quality and ensure product quality, contributing to the delivery of highly reliable mixed-signal semiconductor chips.
Key Responsibilities	Develop verification plans and perform RTL functional verification. Build testbenches and verification environments. Run simulations, debug issues, and analyze failures. Collaborate with design teams to improve verification quality. Enhance verification environments and methodologies based on prototype silicon evaluation.
Required Qualifications (MUST)	Experience in one or more of the following: Functional or logical verification of digital circuits SoC, ASIC, or FPGA verification RTL simulation and debugging Building verification environments using UVM Prototype silicon evaluation and failure analysis
Preferred Qualifications	Experience with verification using SystemVerilog and Verilog Experience with UVM, Assertions, and Coverage methodologies Experience verifying memory controllers and interface circuits Knowledge of DFT, Scan, and MBIST Experience with verification automation using Python Experience with pre- and post-tapeout verification and silicon evaluation Technical communication skills in English

Employment Terms
(Common to All Positions)

Employment Type	・Hired as a Special Fixed-Term Employee of SoftBank Corp. ・Upon joining, you will be seconded to SAIMEMORY Co., Ltd. (100%). ・Secondment means that you remain an employee of SoftBank Corp. while working for another company. About the Special Fixed-Term Employee status ・This employment category is intended for professionals with specialized skills that are recognized as particularly necessary for SoftBank's business operations. It is a fixed-term employee classification.
Cntract period	・Through March 31, 2028. Beginning April 1, 2028, contract renewal or conversion to a different employment category will be considered based on a comprehensive evaluation of: ・Business needs ・Progress of assigned duties ・Individual capabilities ・Job performance ・Work attitude ・The company's overall business conditions
Work Location	Tokyo Portcity Takeshiba Office Tower, WeWork 1-7-1 Kaigan, Minato-ku, Tokyo ・A work-from-home environment is available.
Working Hours	Standard working hours 9:00 AM – 5:45 PM Actual working hours: 7 hours 45 minutes Lunch break: 12:00 PM – 1:00 PM (1 hour) Working arrangements Super Flextime System (no core hours) Work Interval System Employees are guaranteed at least 10 consecutive hours of rest between the end of one workday and the beginning of the next. Overtime work may be required.
Holidays	Regular holidays ・Saturdays ・Sundays ・Japanese national holidays ・Year-end/New Year holidays (December 29 – January 3) Annual Paid Leave ・During the first year: 3–11 days, depending on the month of joining ・From the second year onward: 16 days ・Maximum annual entitlement: 21 days ・Unused leave may be carried over to the following fiscal year. Other Leave ・Marriage leave ・Spouse childbirth leave ・Child's marriage leave ・Nursing care leave ・Bereavement leave ・Leave for hospital visits and cancer treatment ・Other special leave as provided by company policy
Benefits	Social insurance coverage includes: ・Health Insurance ・Employment Insurance ・Workers' Accident Compensation Insurance ・Employees' Pension Insurance Employees aged 65 or older may also be eligible for Employment Insurance if they satisfy the applicable legal requirements.
Compaensation	Monthly Salary ¥450,000 – ¥1,200,000 Expected Annual Salary ¥6,500,000 – ¥18,000,000 Annual salary consists of: ・Monthly base salary ・Overtime allowance based on actual hours worked ・Bonuses The overtime allowance shown is only an estimate. Actual overtime pay varies according to the number of overtime hours worked (the estimate assumes 30 hours of overtime per month). The upper end of the salary range is not fixed and may be exceeded for exceptional candidates.
Bounses	Bonuses are paid twice per year: ・Summer bonus (June) ・Winter bonus (December) The standard annual bonus is approximately 3 months' salary, although the amount varies according to company performance and individual performance evaluations.

Analog IC Design Engineer

Job Description

Mission	Design analog integrated circuits. Contribute to the performance, reliability, and productization of mixed-signal semiconductor chips through the design of analog circuits such as AFEs, PLLs, clock circuits, and I/O circuits.
Key Responsibilities	Design analog circuits including AFEs, PLLs, clock circuits, and I/O circuits. Perform circuit design, simulation, characterization, and optimization using SPICE. Collaborate with digital and system design teams on mixed-signal IC development. Evaluate prototype silicon, analyze issues, and improve circuit designs.
Required Qualifications (MUST)	Experience in one or more of the following: CMOS analog circuit design Designing AFE, PLL, clock, or I/O circuits SPICE-based circuit design and verification Mixed-signal IC development Prototype silicon evaluation and characterization
Preferred Qualifications	Knowledge of and experience with high-speed interfaces, PHYs, and SerDes Experience with low-power design, noise analysis, and jitter analysis Experience designing with layout implementation and parasitic effects in mind Experience with FinFET process technologies Experience with tapeout and memory product development Technical communication skills in English

Employment Terms
(Common to All Positions)

Employment Type	・Hired as a Special Fixed-Term Employee of SoftBank Corp. ・Upon joining, you will be seconded to SAIMEMORY Co., Ltd. (100%). ・Secondment means that you remain an employee of SoftBank Corp. while working for another company. About the Special Fixed-Term Employee status ・This employment category is intended for professionals with specialized skills that are recognized as particularly necessary for SoftBank's business operations. It is a fixed-term employee classification.
Cntract period	・Through March 31, 2028. Beginning April 1, 2028, contract renewal or conversion to a different employment category will be considered based on a comprehensive evaluation of: ・Business needs ・Progress of assigned duties ・Individual capabilities ・Job performance ・Work attitude ・The company's overall business conditions
Work Location	Tokyo Portcity Takeshiba Office Tower, WeWork 1-7-1 Kaigan, Minato-ku, Tokyo ・A work-from-home environment is available.
Working Hours	Standard working hours 9:00 AM – 5:45 PM Actual working hours: 7 hours 45 minutes Lunch break: 12:00 PM – 1:00 PM (1 hour) Working arrangements Super Flextime System (no core hours) Work Interval System Employees are guaranteed at least 10 consecutive hours of rest between the end of one workday and the beginning of the next. Overtime work may be required.
Holidays	Regular holidays ・Saturdays ・Sundays ・Japanese national holidays ・Year-end/New Year holidays (December 29 – January 3) Annual Paid Leave ・During the first year: 3–11 days, depending on the month of joining ・From the second year onward: 16 days ・Maximum annual entitlement: 21 days ・Unused leave may be carried over to the following fiscal year. Other Leave ・Marriage leave ・Spouse childbirth leave ・Child's marriage leave ・Nursing care leave ・Bereavement leave ・Leave for hospital visits and cancer treatment ・Other special leave as provided by company policy
Benefits	Social insurance coverage includes: ・Health Insurance ・Employment Insurance ・Workers' Accident Compensation Insurance ・Employees' Pension Insurance Employees aged 65 or older may also be eligible for Employment Insurance if they satisfy the applicable legal requirements.
Compaensation	Monthly Salary ¥450,000 – ¥1,200,000 Expected Annual Salary ¥6,500,000 – ¥18,000,000 Annual salary consists of: ・Monthly base salary ・Overtime allowance based on actual hours worked ・Bonuses The overtime allowance shown is only an estimate. Actual overtime pay varies according to the number of overtime hours worked (the estimate assumes 30 hours of overtime per month). The upper end of the salary range is not fixed and may be exceeded for exceptional candidates.
Bounses	Bonuses are paid twice per year: ・Summer bonus (June) ・Winter bonus (December) The standard annual bonus is approximately 3 months' salary, although the amount varies according to company performance and individual performance evaluations.

Mixed-Signal Verification Engineer

Job Description

Mission	Verify and assure the quality of mixed-signal semiconductor chips. Develop verification strategies for chips integrating analog and digital circuits, and improve product quality while reducing development risks through functional, performance, and quality verification.
Key Responsibilities	Perform functional and performance verification for mixed-signal semiconductor chips. Develop DFT/DFX verification strategies and verification plans. Evaluate prototype silicon, analyze failures, and verify design quality. Improve product quality and design through feedback to design teams. Optimize verification processes by collaborating with analog, digital, and evaluation teams.
Required Qualifications (MUST)	Experience in one or more of the following: Mixed-signal IC design or verification Functional verification of semiconductor chips Knowledge or hands-on experience with DFT, DFX, or BIST Prototype silicon evaluation and failure analysis Fundamental knowledge of analog and digital circuit design
Preferred Qualifications	Experience with AMS verification Verification experience using SystemVerilog, Verilog, and UVM Knowledge of DFT, Scan, ATPG, MBIST, and LBIST Experience with mixed-signal simulation and post-silicon validation Knowledge of memory interfaces, PHYs, SerDes, and high-speed interfaces Experience developing verification automation tools using Python Technical communication skills in English

Employment Terms
(Common to All Positions)

Employment Type	・Hired as a Special Fixed-Term Employee of SoftBank Corp. ・Upon joining, you will be seconded to SAIMEMORY Co., Ltd. (100%). ・Secondment means that you remain an employee of SoftBank Corp. while working for another company. About the Special Fixed-Term Employee status ・This employment category is intended for professionals with specialized skills that are recognized as particularly necessary for SoftBank's business operations. It is a fixed-term employee classification.
Cntract period	・Through March 31, 2028. Beginning April 1, 2028, contract renewal or conversion to a different employment category will be considered based on a comprehensive evaluation of: ・Business needs ・Progress of assigned duties ・Individual capabilities ・Job performance ・Work attitude ・The company's overall business conditions
Work Location	Tokyo Portcity Takeshiba Office Tower, WeWork 1-7-1 Kaigan, Minato-ku, Tokyo ・A work-from-home environment is available.
Working Hours	Standard working hours 9:00 AM – 5:45 PM Actual working hours: 7 hours 45 minutes Lunch break: 12:00 PM – 1:00 PM (1 hour) Working arrangements Super Flextime System (no core hours) Work Interval System Employees are guaranteed at least 10 consecutive hours of rest between the end of one workday and the beginning of the next. Overtime work may be required.
Holidays	Regular holidays ・Saturdays ・Sundays ・Japanese national holidays ・Year-end/New Year holidays (December 29 – January 3) Annual Paid Leave ・During the first year: 3–11 days, depending on the month of joining ・From the second year onward: 16 days ・Maximum annual entitlement: 21 days ・Unused leave may be carried over to the following fiscal year. Other Leave ・Marriage leave ・Spouse childbirth leave ・Child's marriage leave ・Nursing care leave ・Bereavement leave ・Leave for hospital visits and cancer treatment ・Other special leave as provided by company policy
Benefits	Social insurance coverage includes: ・Health Insurance ・Employment Insurance ・Workers' Accident Compensation Insurance ・Employees' Pension Insurance Employees aged 65 or older may also be eligible for Employment Insurance if they satisfy the applicable legal requirements.
Compaensation	Monthly Salary ¥450,000 – ¥1,200,000 Expected Annual Salary ¥6,500,000 – ¥18,000,000 Annual salary consists of: ・Monthly base salary ・Overtime allowance based on actual hours worked ・Bonuses The overtime allowance shown is only an estimate. Actual overtime pay varies according to the number of overtime hours worked (the estimate assumes 30 hours of overtime per month). The upper end of the salary range is not fixed and may be exceeded for exceptional candidates.
Bounses	Bonuses are paid twice per year: ・Summer bonus (June) ・Winter bonus (December) The standard annual bonus is approximately 3 months' salary, although the amount varies according to company performance and individual performance evaluations.

RF Device Design Engineer

Job Description

Mission	Design and evaluate RF semiconductor devices. Take ownership of the entire development process—from RF circuits, passive components, and interconnect structures to performance evaluation—to deliver high-performance, high-quality semiconductor products.
Key Responsibilities	Design RF circuits, passive devices, and interconnect structures. Perform electromagnetic simulations, SPICE simulations, and equivalent circuit modeling. Build RF measurement environments and evaluate measurement results. Compare simulation and measurement results to optimize designs. Collaborate with design, evaluation, implementation, and system teams throughout product development.
Required Qualifications (MUST)	Experience in one or more of the following: CMOS analog or RF circuit design Electromagnetic analysis and SPICE simulation S-parameter analysis and equivalent circuit modeling RF measurement using network analyzers and related equipment Measurement evaluation, failure analysis, and simulation correlation
Preferred Qualifications	Experience with electromagnetic analysis tools such as HFSS, Momentum, EMX, and Sonnet Experience designing AFEs, PLLs, SerDes, and PHYs Experience evaluating RF devices and communication equipment Experience evaluating test chips Experience with FinFET process technologies Technical communication skills in English

Employment Terms
(Common to All Positions)

Employment Type	・Hired as a Special Fixed-Term Employee of SoftBank Corp. ・Upon joining, you will be seconded to SAIMEMORY Co., Ltd. (100%). ・Secondment means that you remain an employee of SoftBank Corp. while working for another company. About the Special Fixed-Term Employee status ・This employment category is intended for professionals with specialized skills that are recognized as particularly necessary for SoftBank's business operations. It is a fixed-term employee classification.
Cntract period	・Through March 31, 2028. Beginning April 1, 2028, contract renewal or conversion to a different employment category will be considered based on a comprehensive evaluation of: ・Business needs ・Progress of assigned duties ・Individual capabilities ・Job performance ・Work attitude ・The company's overall business conditions
Work Location	Tokyo Portcity Takeshiba Office Tower, WeWork 1-7-1 Kaigan, Minato-ku, Tokyo ・A work-from-home environment is available.
Working Hours	Standard working hours 9:00 AM – 5:45 PM Actual working hours: 7 hours 45 minutes Lunch break: 12:00 PM – 1:00 PM (1 hour) Working arrangements Super Flextime System (no core hours) Work Interval System Employees are guaranteed at least 10 consecutive hours of rest between the end of one workday and the beginning of the next. Overtime work may be required.
Holidays	Regular holidays ・Saturdays ・Sundays ・Japanese national holidays ・Year-end/New Year holidays (December 29 – January 3) Annual Paid Leave ・During the first year: 3–11 days, depending on the month of joining ・From the second year onward: 16 days ・Maximum annual entitlement: 21 days ・Unused leave may be carried over to the following fiscal year. Other Leave ・Marriage leave ・Spouse childbirth leave ・Child's marriage leave ・Nursing care leave ・Bereavement leave ・Leave for hospital visits and cancer treatment ・Other special leave as provided by company policy
Benefits	Social insurance coverage includes: ・Health Insurance ・Employment Insurance ・Workers' Accident Compensation Insurance ・Employees' Pension Insurance Employees aged 65 or older may also be eligible for Employment Insurance if they satisfy the applicable legal requirements.
Compaensation	Monthly Salary ¥450,000 – ¥1,200,000 Expected Annual Salary ¥6,500,000 – ¥18,000,000 Annual salary consists of: ・Monthly base salary ・Overtime allowance based on actual hours worked ・Bonuses The overtime allowance shown is only an estimate. Actual overtime pay varies according to the number of overtime hours worked (the estimate assumes 30 hours of overtime per month). The upper end of the salary range is not fixed and may be exceeded for exceptional candidates.
Bounses	Bonuses are paid twice per year: ・Summer bonus (June) ・Winter bonus (December) The standard annual bonus is approximately 3 months' salary, although the amount varies according to company performance and individual performance evaluations.

Embedded Software / Firmware Engineer (Semiconductor Evaluation & Verification)

Job Description

Mission	Develop embedded software and firmware for semiconductor chip evaluation and verification. Contribute to chip bring-up, functional verification, performance evaluation, and evaluation platform development through the design and implementation of low-level software that controls semiconductor devices and evaluation environments.
Key Responsibilities	Design and develop embedded software and firmware for semiconductor evaluation and verification. Implement memory BIST control, test pattern generation, error detection, and logging functions. Develop control software running on evaluation boards, FPGAs, MCUs, and processors. Implement low-level software for register, device, and communication control. Support chip bring-up, evaluation, debugging, and automation of evaluation environments. Collaborate with IC design, system design, and evaluation teams to support product development.
Required Qualifications (MUST)	Experience in one or more of the following: Embedded software development in C or C++ Software design and implementation considering hardware specifications Low-level software development for register, device, and communication control Development using microcontrollers, FPGAs, SoCs, or ASICs Hardware debugging, evaluation, and failure analysis
Preferred Qualifications	Knowledge of and experience with Memory BIST, DFT, DFX, and memory testing Experience with semiconductor evaluation, prototype chip bring-up, FPGA, and board evaluation Experience developing low-level software such as bare-metal firmware, RTOS applications, Linux drivers, and bootloaders Experience with interface protocols including SPI, I²C, UART, JTAG, PCIe, USB, and Ethernet Experience with evaluation automation, test scripting, and data analysis using Python Fundamental knowledge of digital circuits, memory architecture, and SoC design Technical communication skills in English

Employment Terms
(Common to All Positions)

Employment Type	・Hired as a Special Fixed-Term Employee of SoftBank Corp. ・Upon joining, you will be seconded to SAIMEMORY Co., Ltd. (100%). ・Secondment means that you remain an employee of SoftBank Corp. while working for another company. About the Special Fixed-Term Employee status ・This employment category is intended for professionals with specialized skills that are recognized as particularly necessary for SoftBank's business operations. It is a fixed-term employee classification.
Cntract period	・Through March 31, 2028. Beginning April 1, 2028, contract renewal or conversion to a different employment category will be considered based on a comprehensive evaluation of: ・Business needs ・Progress of assigned duties ・Individual capabilities ・Job performance ・Work attitude ・The company's overall business conditions
Work Location	Tokyo Portcity Takeshiba Office Tower, WeWork 1-7-1 Kaigan, Minato-ku, Tokyo ・A work-from-home environment is available.
Working Hours	Standard working hours 9:00 AM – 5:45 PM Actual working hours: 7 hours 45 minutes Lunch break: 12:00 PM – 1:00 PM (1 hour) Working arrangements Super Flextime System (no core hours) Work Interval System Employees are guaranteed at least 10 consecutive hours of rest between the end of one workday and the beginning of the next. Overtime work may be required.
Holidays	Regular holidays ・Saturdays ・Sundays ・Japanese national holidays ・Year-end/New Year holidays (December 29 – January 3) Annual Paid Leave ・During the first year: 3–11 days, depending on the month of joining ・From the second year onward: 16 days ・Maximum annual entitlement: 21 days ・Unused leave may be carried over to the following fiscal year. Other Leave ・Marriage leave ・Spouse childbirth leave ・Child's marriage leave ・Nursing care leave ・Bereavement leave ・Leave for hospital visits and cancer treatment ・Other special leave as provided by company policy
Benefits	Social insurance coverage includes: ・Health Insurance ・Employment Insurance ・Workers' Accident Compensation Insurance ・Employees' Pension Insurance Employees aged 65 or older may also be eligible for Employment Insurance if they satisfy the applicable legal requirements.
Compaensation	Monthly Salary ¥450,000 – ¥1,200,000 Expected Annual Salary ¥6,500,000 – ¥18,000,000 Annual salary consists of: ・Monthly base salary ・Overtime allowance based on actual hours worked ・Bonuses The overtime allowance shown is only an estimate. Actual overtime pay varies according to the number of overtime hours worked (the estimate assumes 30 hours of overtime per month). The upper end of the salary range is not fixed and may be exceeded for exceptional candidates.
Bounses	Bonuses are paid twice per year: ・Summer bonus (June) ・Winter bonus (December) The standard annual bonus is approximately 3 months' salary, although the amount varies according to company performance and individual performance evaluations.

Corporate Strategy

Manager, Corporate Strategy Planning

Job Description

Mission	Lead corporate strategy planning initiatives to accelerate company growth by driving business planning, corporate strategy, capital planning, and key strategic projects. As the central function connecting corporate strategy with business execution, the Corporate Strategy Planning Department aligns executive management, corporate functions, engineering organizations, and external partners to support critical business decisions and sustainable growth.
Key Responsibilities	Develop short- and mid-term business plans Develop capital and funding plans Design and manage KPIs Prepare materials for executive management and Board meetings Develop business plans Conduct financial modeling and business simulations
Required Qualifications (MUST)	Experience in corporate strategy, business planning, or corporate planning Experience managing new business development or strategic projects Strong ability to prepare logical business proposals and executive-level presentation materials Business-level English proficiency
Preferred Qualifications	Experience working in startups or high-growth companies Experience with fundraising or capital planning Experience managing strategic alliances Technical knowledge of semiconductor technologies, system architecture, or R&D management

Employment Terms
(Common to All Positions)

Employment Type	・Hired as a Special Fixed-Term Employee of SoftBank Corp. ・Upon joining, you will be seconded to SAIMEMORY Co., Ltd. (100%). ・Secondment means that you remain an employee of SoftBank Corp. while working for another company. About the Special Fixed-Term Employee status ・This employment category is intended for professionals with specialized skills that are recognized as particularly necessary for SoftBank's business operations. It is a fixed-term employee classification.
Cntract period	・Through March 31, 2028. Beginning April 1, 2028, contract renewal or conversion to a different employment category will be considered based on a comprehensive evaluation of: ・Business needs ・Progress of assigned duties ・Individual capabilities ・Job performance ・Work attitude ・The company's overall business conditions
Work Location	Tokyo Portcity Takeshiba Office Tower, WeWork 1-7-1 Kaigan, Minato-ku, Tokyo ・A work-from-home environment is available.
Working Hours	Standard working hours 9:00 AM – 5:45 PM Actual working hours: 7 hours 45 minutes Lunch break: 12:00 PM – 1:00 PM (1 hour) Working arrangements Super Flextime System (no core hours) Work Interval System Employees are guaranteed at least 10 consecutive hours of rest between the end of one workday and the beginning of the next. Overtime work may be required.
Holidays	Regular holidays ・Saturdays ・Sundays ・Japanese national holidays ・Year-end/New Year holidays (December 29 – January 3) Annual Paid Leave ・During the first year: 3–11 days, depending on the month of joining ・From the second year onward: 16 days ・Maximum annual entitlement: 21 days ・Unused leave may be carried over to the following fiscal year. Other Leave ・Marriage leave ・Spouse childbirth leave ・Child's marriage leave ・Nursing care leave ・Bereavement leave ・Leave for hospital visits and cancer treatment ・Other special leave as provided by company policy
Benefits	Social insurance coverage includes: ・Health Insurance ・Employment Insurance ・Workers' Accident Compensation Insurance ・Employees' Pension Insurance Employees aged 65 or older may also be eligible for Employment Insurance if they satisfy the applicable legal requirements.
Compaensation	Monthly Salary ¥450,000 – ¥1,200,000 Expected Annual Salary ¥6,500,000 – ¥18,000,000 Annual salary consists of: ・Monthly base salary ・Overtime allowance based on actual hours worked ・Bonuses The overtime allowance shown is only an estimate. Actual overtime pay varies according to the number of overtime hours worked (the estimate assumes 30 hours of overtime per month). The upper end of the salary range is not fixed and may be exceeded for exceptional candidates.
Bounses	Bonuses are paid twice per year: ・Summer bonus (June) ・Winter bonus (December) The standard annual bonus is approximately 3 months' salary, although the amount varies according to company performance and individual performance evaluations.

Manager, Business Operations & PMO

Job Description

Mission	Drive company-wide strategic initiatives by connecting corporate strategy with business execution through effective PMO practices, project governance, progress tracking, and risk management. Serve as the central coordination function that aligns executive management, engineering organizations, corporate functions, and external partners to ensure the successful execution of strategic projects.
Key Responsibilities	Drive strategic corporate initiatives Operate and enhance PMO functions Manage cross-functional development and business programs Monitor KPIs and business performance Support risk management and governance activities
Required Qualifications (MUST)	Experience in development project management or program management Experience in business operations or business management Strong facilitation and cross-functional coordination skills Excellent analytical thinking and documentation skills Business-level English proficiency
Preferred Qualifications	Experience in Deep Tech industries (Semiconductors, AI, Telecommunications, Hardware, etc.) Experience in Program Management Experience in corporate strategy or business planning Experience in governance and risk management Technical understanding of semiconductors, system architecture, and hardware development

Employment Terms
(Common to All Positions)

Employment Type	・Hired as a Special Fixed-Term Employee of SoftBank Corp. ・Upon joining, you will be seconded to SAIMEMORY Co., Ltd. (100%). ・Secondment means that you remain an employee of SoftBank Corp. while working for another company. About the Special Fixed-Term Employee status ・This employment category is intended for professionals with specialized skills that are recognized as particularly necessary for SoftBank's business operations. It is a fixed-term employee classification.
Cntract period	・Through March 31, 2028. Beginning April 1, 2028, contract renewal or conversion to a different employment category will be considered based on a comprehensive evaluation of: ・Business needs ・Progress of assigned duties ・Individual capabilities ・Job performance ・Work attitude ・The company's overall business conditions
Work Location	Tokyo Portcity Takeshiba Office Tower, WeWork 1-7-1 Kaigan, Minato-ku, Tokyo ・A work-from-home environment is available.
Working Hours	Standard working hours 9:00 AM – 5:45 PM Actual working hours: 7 hours 45 minutes Lunch break: 12:00 PM – 1:00 PM (1 hour) Working arrangements Super Flextime System (no core hours) Work Interval System Employees are guaranteed at least 10 consecutive hours of rest between the end of one workday and the beginning of the next. Overtime work may be required.
Holidays	Regular holidays ・Saturdays ・Sundays ・Japanese national holidays ・Year-end/New Year holidays (December 29 – January 3) Annual Paid Leave ・During the first year: 3–11 days, depending on the month of joining ・From the second year onward: 16 days ・Maximum annual entitlement: 21 days ・Unused leave may be carried over to the following fiscal year. Other Leave ・Marriage leave ・Spouse childbirth leave ・Child's marriage leave ・Nursing care leave ・Bereavement leave ・Leave for hospital visits and cancer treatment ・Other special leave as provided by company policy
Benefits	Social insurance coverage includes: ・Health Insurance ・Employment Insurance ・Workers' Accident Compensation Insurance ・Employees' Pension Insurance Employees aged 65 or older may also be eligible for Employment Insurance if they satisfy the applicable legal requirements.
Compaensation	Monthly Salary ¥450,000 – ¥1,200,000 Expected Annual Salary ¥6,500,000 – ¥18,000,000 Annual salary consists of: ・Monthly base salary ・Overtime allowance based on actual hours worked ・Bonuses The overtime allowance shown is only an estimate. Actual overtime pay varies according to the number of overtime hours worked (the estimate assumes 30 hours of overtime per month). The upper end of the salary range is not fixed and may be exceeded for exceptional candidates.
Bounses	Bonuses are paid twice per year: ・Summer bonus (June) ・Winter bonus (December) The standard annual bonus is approximately 3 months' salary, although the amount varies according to company performance and individual performance evaluations.

Manager, Alliance & Governance

Job Description

Mission	Maximize corporate value by establishing strategic partnerships and implementing effective governance. The Alliance & Governance Department builds trusted partnerships, manages strategic agreements, and develops governance frameworks that enable the company to confidently expand its technology, business, and global ecosystem.
Key Responsibilities	Drive strategic alliance initiatives Manage contracts and intellectual property (IP) Promote corporate-level partnership governance Oversee governance for external development projects and strategic collaborations
Required Qualifications (MUST)	Experience in alliance management or business development Experience in contract management and project management Experience managing external partnerships and organizational governance Strong communication and stakeholder management skills Business-level English proficiency
Preferred Qualifications	Experience in Deep Tech industries (Semiconductors, AI, Telecommunications, Hardware, etc.) Experience in joint development and technology partnerships Experience supporting corporate management and business operations Technical understanding of semiconductors, system architecture, and hardware development

Employment Terms
(Common to All Positions)

Employment Type	・Hired as a Special Fixed-Term Employee of SoftBank Corp. ・Upon joining, you will be seconded to SAIMEMORY Co., Ltd. (100%). ・Secondment means that you remain an employee of SoftBank Corp. while working for another company. About the Special Fixed-Term Employee status ・This employment category is intended for professionals with specialized skills that are recognized as particularly necessary for SoftBank's business operations. It is a fixed-term employee classification.
Cntract period	・Through March 31, 2028. Beginning April 1, 2028, contract renewal or conversion to a different employment category will be considered based on a comprehensive evaluation of: ・Business needs ・Progress of assigned duties ・Individual capabilities ・Job performance ・Work attitude ・The company's overall business conditions
Work Location	Tokyo Portcity Takeshiba Office Tower, WeWork 1-7-1 Kaigan, Minato-ku, Tokyo ・A work-from-home environment is available.
Working Hours	Standard working hours 9:00 AM – 5:45 PM Actual working hours: 7 hours 45 minutes Lunch break: 12:00 PM – 1:00 PM (1 hour) Working arrangements Super Flextime System (no core hours) Work Interval System Employees are guaranteed at least 10 consecutive hours of rest between the end of one workday and the beginning of the next. Overtime work may be required.
Holidays	Regular holidays ・Saturdays ・Sundays ・Japanese national holidays ・Year-end/New Year holidays (December 29 – January 3) Annual Paid Leave ・During the first year: 3–11 days, depending on the month of joining ・From the second year onward: 16 days ・Maximum annual entitlement: 21 days ・Unused leave may be carried over to the following fiscal year. Other Leave ・Marriage leave ・Spouse childbirth leave ・Child's marriage leave ・Nursing care leave ・Bereavement leave ・Leave for hospital visits and cancer treatment ・Other special leave as provided by company policy
Benefits	Social insurance coverage includes: ・Health Insurance ・Employment Insurance ・Workers' Accident Compensation Insurance ・Employees' Pension Insurance Employees aged 65 or older may also be eligible for Employment Insurance if they satisfy the applicable legal requirements.
Compaensation	Monthly Salary ¥450,000 – ¥1,200,000 Expected Annual Salary ¥6,500,000 – ¥18,000,000 Annual salary consists of: ・Monthly base salary ・Overtime allowance based on actual hours worked ・Bonuses The overtime allowance shown is only an estimate. Actual overtime pay varies according to the number of overtime hours worked (the estimate assumes 30 hours of overtime per month). The upper end of the salary range is not fixed and may be exceeded for exceptional candidates.
Bounses	Bonuses are paid twice per year: ・Summer bonus (June) ・Winter bonus (December) The standard annual bonus is approximately 3 months' salary, although the amount varies according to company performance and individual performance evaluations.

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