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Mujin
Mujin

Senior Build Systems Engineer (Developer Productivity / Build Optimization)

Japan
Full-Time
On-site

TLDR

Lead development and modernization of large-scale C/C++ build systems to boost developer productivity, reproducibility, and scalability across robotics software.

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
  • Analyze existing build systems and propose structural improvements or migrations where necessary
  • 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 working on developer productivity, platform engineering, or internal infrastructure teams.
  • 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

    Japan Relocation Support

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

    Benefits

    Flex holiday

    Flex Holiday (take public holidays on days of your choice)

    Vending machine snacks and drinks

    Free vending machines (offering drinks and snacks)

    Health Insurance

    Japanese Social Security (Health Insurance, Pension, Labor Insurance)

    Japan relocation support

    Maternity and childcare leave

    Maternity leave and Childcare leave

    Monthly team dinner support

    Visa Sponsorship

    Mujin
    Mujin

    Mujin develops MujinOS, an intelligent operating system for industrial robotics, focusing on advanced automation solutions that enhance supply chain efficiency. By leveraging unique robotic control technology, we tackle pressing societal challenges like labor shortages and logistics issues, making industries smarter and more efficient.

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    Systems Engineer
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