Embedded Software Engineer

Tokyo
Partial Remote
Full-time
April 30, 2026

Job description

Synspective’s Onboard Software Team is looking for a talented and motivated developer to join our team.

Responsibility/ Details of work

Design, develop, troubleshoot, and maintain multi-threaded C++ code on an embedded Linux system.
Support operations team and resolve in-orbit anomalies.
Verify new features and software changes on hardware-in-the-loop testing setups.
Contribute to design decisions, PR reviews, and propose future features and requirements.
Utilize and improve the CI/CD pipeline.
Collaborate within the team and externally with other teams to deliver functional software for our satellites.

Selling points of this role

Onboard Software is one of the most important parts of our satellite systems. Developing software for a system that is no longer accessible once launched provides a unique set of challenges where developers have to balance performance and hardware constraints with the high requirements for robustness, resilience, and functionality. This position offers the opportunity to take on interesting and challenging software work, with a certain degree of autonomy in how to execute on the software design. We are a supportive and friendly team, with diverse backgrounds and SMEs in a wide array of technical subjects, and cross team collaboration means you will gain exposure to other subsystems like satellite operations, hardware, and ground control.

Job requirements

3+ years experience in C++
3+ year(s) experience with developing for embedded systems such as embedded Linux, bare metal, or RTOS.
1+ year(s) experience with communication and networking protocols such as RS422, CAN, HTTPS, SSH, and SFTP
Familiarity with version control tools (Git, SVN, etc), ticketing systems (Redmine, JIRA, etc) and knowledge of CMake/Make or equivalent build tools.
Hands on experience with software testing (unit tests, hardware-in-the-loop, system)
Good understanding of design patterns and data structures
Strong problem-solving skills
Self-motivated and able to work collaboratively with a diverse team

Preferred qualifications

Experience with multi-threaded applications and troubleshooting race/deadlock conditions
Experience with U-boot, driver development, and/or FPGAs
Experience in the space/satellite industry or other high reliability systems
Experience configuring and modifying CI/CD pipelines
Familiarity with Yocto and recipes

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About Synspective

Synspective Inc., founded in 2018, develops and operates Synthetic Aperture Radar (SAR) satellites, providing SAR data and analytics solutions.

The company aims to build a constellation of 30 SAR satellites by the late 2020s, enabling the creation of a system capable of observing changes anywhere on Earth.

With a SAR satellite constellation that offers high-frequency and high-resolution Earth observation, Synspective delivers satellite data and a range of analytics solutions for disaster response and management, national security, and environmental monitoring.

Japanese Language Policy
Synspective’s Japanese skill requirements vary depending on the position and are defined in each job description.
Paid Leave
Synspective offers 10 days of paid leave that increase annually up to 20 days, in accordance with paid leave according to Japanese law. The company also observes all Japanese national holidays and provides 6 additional days off for the year-end holidays (from December 29th to January 3rd).
Benefits
💹 Employee stock option plan

💻 New tech gear

👩‍🎓 Skill development support

💛 Support for attending conferences

💜 Seminar participation support

👶 Parental Leave

🧡 Social security / insurance benefits included

🏥 Healthcare insurance

💚 Pension insurance
Work style
Full flex time with core time from 11:00AM to 3:00PM
Synergy of Spirit

As part of Synspective, we embark on this journey together, bringing with us our combined experiences and life. As a team, we recognize that the team’s goals are my personal goals, and my goals are the team’s goals. We each share a part of the responsibility to succeed. I constantly communicate to align my efforts with our goal. I manage my energy and time to maximize team performance. I give more than I take. I provide value when needed and I take responsibility for my own behavior.

Synthesis of Knowledge

We try to create new value under conditions that have huge uncertainty and volatility. The only way for us to succeed is to progress through trial and error that we learn from and make changes based on our new knowledge. I listen actively and respectfully to others’ opinions, consider it logically and examine my assumptions, and discuss it with my team constructively. I learn by doing and building upon our experiences. I aim to achieve better results with every new attempt. I accelerate the collective learning process by openly sharing experiences and knowledge with my team.

Synched with the Future

We have an obligation to create a sustainable future for the next generations. To do so, we must tackle tough challenges as pioneers, leaving our comfort zones that prevent our growth. I recognize that a smart failure is a step toward success and try to learn from the past to solve new issues in the future. I set aggressive goals and divide them into sprint-victories in order to continue to tangibly advance and make progress. I consider the future, prepare for it, and actively engage in making it happen with quick actions and decisions.