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Mujin

Senior Build Systems Engineer

シニアビルドシステムエンジニア

Tags: Full-time, 6~8 YOE

Koto-ku, Tokyo, Japan・Fetched Today

Job Description


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.




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 focused on improving the development and build processes of large-scale robotics software systems.


This role is not limited to CI/CD operations. You will identify fundamental bottlenecks in the development workflow, such as slow builds, unreliable dependencies, and complex build configurations, and solve them at the build system level.


This role is a strong fit for engineers who have worked on engineering productivity, developer platforms, or internal tooling teams, where they improved build or development workflows at a system level, beyond simply operating CI/CD pipelines.


You will work on designing and evolving the build system itself to improve developer productivity, reproducibility, and scalability across large C/C++ codebases.


Examples of challenges you may work on:
• Reducing build times from hours to minutes by redesigning the build system.
• Re-architecting dependency management to remove hidden coupling between modules.
• Improving build reproducibility across local and CI environments.




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