Senior DevOps Engineer - Build Systems & CI

Mujininc

Tokyo, Japan (MJHQ) permanent

Posted: March 16, 2026

Quick Summary

We are looking for a highly motivated Senior DevOps Engineer to join our Tokyo-based team. The successful candidate will be responsible for building and maintaining our cutting-edge operating systems, ensuring seamless connectivity and efficient operations. Key skills required include experience in robotics, machine learning, and DevOps practices.

Job Description

Mujin creates MujinOS, the intelligent operating system for industrial robotics. By leveraging real-time digital twins, MujinOS seamlessly connects and orchestrates equipment to achieve fully autonomous operations.

At our core is Machine Intelligence (MujinMI), a unique approach offering advanced perception, planning, and control algorithms that solve the most challenging automation problems.

Trusted by globally recognized companies, we are redefining supply chain efficiency. Headquartered in Japan with growing teams in China, the US, and Europe, we invite you to join a dynamic environment where you can shape the future of automation.

About the Role

Mujin is hiring a DevOps Engineer for the DevOps team. The team is currently small, and you will play a key role in managing and improving our CI infrastructure and build system.

Responsibilities:
• Plan and execute the modernization or optimization of the current build system.

• Create early prototypes and write technical documentation to propose system changes.

• Manage and improve the CI infrastructure and tools.

• Ensure good coding practices and code quality through consistent code reviews.

• Collaborate with other engineering teams to improve and optimize the CI tools.

Minimum Requirements:
• Experience designing and operating CI/CD pipelines.

• Proficiency in at least one programming language used for internal tooling (Python or Go).

• Working knowledge of Bash scripting and Linux administration (Debian preferred).

• Understanding of C/C++ compilation processes and build automation tools (such as CMake).

• Experience operating Docker environments and artifact registries.

• Proficiency with Git version control and collaborative branching workflows.

• Experience in planning and executing infrastructure projects or system migrations.

Preferred Requirements:
• Hands-on experience with Bazel, JHbuild, or Gnome build tools, or building complex, distributed build systems.

• Knowledge of package management systems across multiple languages (Python, C++, Rust, or JavaScript).

• Experience with Kubernetes

• Experience writing technical proposals and design specifications.

• Familiarity with Agile software development.

Interview Process::
• Resume Screening

• Take-home coding test

• HR interview

• Technical interview

• Culture/Team fit interview

Location
3-8-5 Tatsumi, Koto-Ku, Tokyo 135-0053, Japan
Work Hours
8:45 - 17:45 (with a 60-minute break)
Salary
- Based on experience and skills
- Salary revision twice a year
- Additional bonuses available based on performance
Holidays
- Every Saturday and Sunday
- Annual paid leaves
- Maternity leave and Childcare leave
- Flex Holiday (take public holidays on days of your choice)
- Other holidays as defined by the company
Company Benefits
- Flexible dress code policy
- Commuting allowance
- Japanese Social Security (Health Insurance, Pension, Labor Insurance)
- Monthly team dinner support
- Free buffet lunch every workday
- Free vending machines (offering drinks and snacks)
- High-end coffee machine
- Exclusive Employee Gym Access
Japan Relocation Support
- Visa sponsorship
- Flight ticket support
- Shipping expenses coverage up to a specified limit
- Assistance for housing

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