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Mujin

Senior Build Systems Engineer

Tokyo, Japan (MJHQ)Full Time (English)Posted Mar 16, 2026

Requirements at a glance

Senior Build Systems Engineer at Mujin is a role based in Tokyo, Japan (MJHQ). It does not mention visa sponsorship. Key skills include JavaScript, Python, C++, and C. Applications are submitted through Lever.

Visa sponsorship
Not mentioned in the posting
Application platform
Lever

Skills in this posting

  • JavaScript
  • Python
  • C++
  • C
  • Rust
  • Kubernetes
  • Docker
  • Linux
  • Git
  • Agile

Extracted automatically from the job description. Confirm details in the full posting below.

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.

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

Japan Relocation Support

  • Visa sponsorship
  • Flight ticket support
  • Shipping expenses coverage up to a specified limit
  • Assistance for housing

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

    • Keep exploring

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