Senior Build Systems Engineer

Team: DevOps Team

Location: Tokyo, Japan (MJHQ)

Commitment: Full-Time (English)

Workplace Type: onsite

Mujin is a global leader in industrial automation, redefining supply chain efficiency through MujinOS—our intelligent operating system for robotics. At our core is Machine Intelligence (MujinMI), a unique approach that leverages real-time digital twins and advanced perception, planning, and control algorithms to achieve fully autonomous operations.

Our flagship product, MujinController, empowers users with a highly configurable, no-code interface. By integrating cutting-edge motion planning and computer vision, it enables seamless automation for complex applications such as palletizing, picking, and truck unloading.

Headquartered in Japan with a growing presence in the US, China, 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 Senior Software Engineer for the DevOps team. The team is currently small, and you will play a key role in building and optimizing large-scale C/C++ build systems, with CI infrastructure supporting the workflow.

Responsibilities

• Design and implement a modern and optimized build system, adhering to best practices and coding standards.
• 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

• Understanding of C/C++ compilation processes and build tools (such as CMake).
• Experience integrating and operating build systems within 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). 
• Experience operating containerized environments (such as Docker, k8s, etc). 
• 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 are 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