Hardware Security Engineer Recruitment

Selection Process

Step. 1 Document Screening

Please submit your resume, work history (CV), and portfolio. Based on the materials you provide, we will comprehensively review your background, skills, and motivation for applying.
We will typically notify you of the results of the document screening by email within one to two weeks.

Step. 2 Aptitude Test

We conduct a standardized aptitude test (commonly used in Japanese hiring, known as the SPI test).
This is used as an opportunity for us to get to know each other from a perspective distinct from technical skills and experience.

Step. 3 First Interview

This interview is conducted by a member of our team. We will ask about your past experience, your approach to work, and your reasons for wanting to join our company, using this as an opportunity to deepen mutual understanding.

Step. 4 Technical Assessment

By having you work on a task that closely resembles actual on-the-job work, we assess not only your knowledge and skills but also how you approach challenges and your thought process.
This is conducted either online or in person, with the level of difficulty adjusted according to the position you are applying for.

Step. 5 Second Interview

Based on the first interview and technical assessment, this interview is conducted primarily by the manager of the department you would be assigned to.
We will discuss in more concrete terms your fit with the team and your suitability for the actual work involved.

Step. 6 Final Interview

This interview is conducted by a member of our executive management or board of directors. We will share our company's vision and future direction while confirming final mutual intent.
We aim to proceed carefully so that both parties can reach a mutual understanding and start off on a positive note.

※Please note that the selection process may vary depending on the position and the status of applications.

Employment Type	Full-time employee 3-month probationary period (no changes to working conditions during this period)
Work Location	Ochanomizu First Building 5F, 2-5-1, Kanda Surugadai, Chiyoda-ku, Tokyo, Japan, 101-0062
Smoking Policy	Indoor smoking is permitted in designated areas.
Working Hours	Flextime system Standard working hours: 8 hours per day Core hours: 11:00 AM – 2:00 PM
Working Style	This is a hybrid position based in Tokyo. While remote work is available depending on the project and team situation, regular attendance at the Tokyo office is required. Please note that all applicants must currently reside in Japan.
Holidays and Leave	122 annual holidays Complete two-day weekends (Saturdays and Sundays) National holidays Year-end and New Year holidays Substitute holidays for national holidays falling on a Saturday Paid leave: 20 to 22 days per year Family-friendly leave (including marriage leave, maternity/paternity leave, prenatal checkup leave, childcare leave, child nursing leave, caregiving leave, bereavement leave, etc.)
Social Insurance	Employment Insurance Health Insurance Employees' Pension Insurance Workers' Accident Compensation Insurance
Visa Requirements	Applicants must be eligible to work in Japan. While the company does not cover visa application fees or related costs, we will provide necessary documents and support required for the visa application process.
Salary	Annual salary system
Benefits and Welfare	Defined contribution pension plan (401K) Commuting allowance (according to company policy) Housing allowance (according to company policy) Payroll savings program ("Zaikei," a Japanese asset-formation savings scheme funded through payroll deduction), with additional contributions matched by the company Support for obtaining professional certifications Discounted rates for various insurance products Congratulatory and condolence allowance Flexible benefits program, administered through third-party welfare service providers (Relo Club, Benefit One) Free office drinks Many unofficial employee clubs (voluntary participation) Employee Bug Bounty Program
Key Responsibilities	Through hands-on security testing and research into attack techniques targeting embedded devices and IoT systems, you will contribute to strengthening the robustness and improving the reliability of critical social infrastructure and our clients' systems. With both technical curiosity and a strong sense of ethics, you will conduct highly reproducible verification and propose countermeasures. Vulnerability assessment of embedded devices and IoT devices (including communication analysis and hardware analysis) Organizing assessment findings, preparing reports, and providing technical explanations and answering questions during reporting sessions with clients Researching and reproducing new attack techniques, developing proof-of-concept (PoC) exploits, and incorporating these findings into our testing methodologies Developing and improving testing tools and test environments Sharing technical knowledge both internally and externally
Required Skills	A strong sense of ethics and responsibility as a security engineer, including the ability to maintain confidentiality The ability to logically analyze and explain observations based on an experimental approach The ability to document and report technical content in a clear and accessible manner An understanding of the fundamental operation of embedded systems and of networking The ability to independently define your own challenges and proceed autonomously through hypothesis testing, research, and investigation
Preferred Skills	Knowledge of, or research experience in, hardware-level attack techniques such as side-channel attacks and physical analysis Experience analyzing wireless communications Experience in reverse engineering and vulnerability assessment of embedded devices Development and debugging experience in bare-metal environments or embedded operating systems (RTOS, embedded Linux) Experience building your own testing and verification environments using custom-built tools and scripts A strong interest in emerging technical fields or topics that are not yet widely known
Ideal Candidate Profile	A person who can independently define their own challenges and proceed autonomously through hypothesis testing, research, and investigation

Employment type Full-time employee 3-month probationary period (no changes to working conditions during this period)
Work Location Ochanomizu First Building 5F, 2-5-1, Kanda Surugadai, Chiyoda-ku, Tokyo, Japan, 101-0062
Smoking Policy Indoor smoking is permitted in designated areas.
Working Hours Flextime system Standard working hours: 8 hours per day Core hours: 11:00 AM – 2:00 PM
Working Style This is a hybrid position based in Tokyo. While remote work is available depending on the project and team situation, regular attendance at the Tokyo office is required. Please note that all applicants must currently reside in Japan.
Holidays and Leave 122 annual holidays Complete two-day weekends (Saturdays and Sundays) National holidays Year-end and New Year holidays Substitute holidays for national holidays falling on a Saturday Paid leave: 20 to 22 days per year Family-friendly leave (including marriage leave, maternity/paternity leave, prenatal checkup leave, childcare leave, child nursing leave, caregiving leave, bereavement leave, etc.)
Social Insurance Employment Insurance Health Insurance Employees' Pension Insurance Workers' Accident Compensation Insurance
Visa Requirements Applicants must be eligible to work in Japan. While the company does not cover visa application fees or related costs, we will provide necessary documents and support required for the visa application process.
Salary Annual salary system
Benefits and Welfare Defined contribution pension plan (401K) Commuting allowance (according to company policy) Housing allowance (according to company policy) Payroll savings program ("Zaikei," a Japanese asset-formation savings scheme funded through payroll deduction), with additional contributions matched by the company Support for obtaining professional certifications Discounted rates for various insurance products Congratulatory and condolence allowance Flexible benefits program, administered through third-party welfare service providers (Relo Club, Benefit One) Free office drinks Many unofficial employee clubs (voluntary participation) Employee Bug Bounty Program
Key Responsibilities Through hands-on security testing and research into attack techniques targeting embedded devices and IoT systems, you will contribute to strengthening the robustness and improving the reliability of critical social infrastructure and our clients' systems. With both technical curiosity and a strong sense of ethics, you will conduct highly reproducible verification and propose countermeasures. Vulnerability assessment of embedded devices and IoT devices (including communication analysis and hardware analysis) Organizing assessment findings, preparing reports, and providing technical explanations and answering questions during reporting sessions with clients Researching and reproducing new attack techniques, developing proof-of-concept (PoC) exploits, and incorporating these findings into our testing methodologies Developing and improving testing tools and test environments Sharing technical knowledge both internally and externally
Required Skills A strong sense of ethics and responsibility as a security engineer, including the ability to maintain confidentiality The ability to logically analyze and explain observations based on an experimental approach The ability to document and report technical content in a clear and accessible manner An understanding of the fundamental operation of embedded systems and of networking The ability to independently define your own challenges and proceed autonomously through hypothesis testing, research, and investigation
Preferred Skills Knowledge of, or research experience in, hardware-level attack techniques such as side-channel attacks and physical analysis Experience analyzing wireless communications Experience in reverse engineering and vulnerability assessment of embedded devices Development and debugging experience in bare-metal environments or embedded operating systems (RTOS, embedded Linux) Experience building your own testing and verification environments using custom-built tools and scripts A strong interest in emerging technical fields or topics that are not yet widely known
Ideal Candidate Profile A person who can independently define their own challenges and proceed autonomously through hypothesis testing, research, and investigation

How to Apply

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