Backend System Engineer

  • Tokyo
  • No Remote
  • Full-time
  • December 23, 2023
Apply from Anywhere 👍
Relocation to Japan 👍
(Overseas visa sponsorship supported)
Language Requirements
Japanese: Not Required 👍
English: Business Level
Minimum Experience
Mid-level or above


Backend System Engineer will focus on the system architecture and design, development and deployment of the motion planning AI-equipped intelligent robot controller.

<Design and implement a wide variety of system software>

    • Real-time OS and real-time network protocols
    • Linux kernel modules, Linux boot and base system, hardware drivers
    • System security, TPM and data encryption
    • Build tools and infrastructure, deployment, remote control and upgrade system

<Design and implement reliable, high-performance backend services and APIs for industrial robot controllers>

    • High-performance HTTP server
    • ZeroMQ inter-process communication
    • High-efficiency database
    • Cloud services


    • Develop drivers to interface with industrial hardware such as robots, conveyors, 3D cameras, sensors, PLC, AGV, ASRS, WMS
    • Solve cutting-edge complex technical challenges throughout the entire system
    • Occasional business trip to customer site in Japan and abroad


  • BSc degree or higher in Computer Science, Computer Engineering or related fields, or equivalent academic or work experience
  • Excellent experience and high proficiency in C++ and Python
  • Advanced Linux user, excellent experience in Linux software development
  • Technical communication skills in English
  • Expert in Linux internals
  • Expert in networking stack, network protocols, routing, async I/O
  • Expert in Docker and its internal workings
  • Experience in full-stack development
  • Expert in real time OS, Linux kernel module development, EtherCAT
  • Experience in robotic software development


We are looking for those who are prepared to dedicate to facing big challenges, work proactively and independently, and take ownership when working with members across the teams!

【Attractiveness / Uniqueness】

  • You will get your “hands dirty” working on all aspects of the industrial robot controller, not being confined to a specific component in the system. The work is challenging, mostly like something that you have never done before, requiring extensive research.
  • Since the work if widely-applicable, it will affect everyone in the engineering team, making the Backend System Engineers the likely “go-to” people. You will have chances to travel and work onsite to integrate the cutting-edge industrial systems such as AGVs and ASRS.

Work Location:

Tatsumi office: 3-8-5 Tatsumi, Koto-ku, Tokyo, 135-0053 Japan

Mujin develops and sells "intelligent robot controllers" with the goal of building a common platform for industrial robots. Conventional robots are suitable for automating repetitive work, but traditionally they've been hard to install in environments where products and surroundings change. Most robots have complex settings that are hard to change for each use case. Mujin's tech solves this problem using technology called motion planning. It allows them to provide solutions that replace heavy but simple work done by humans with automation by robots. The technology is used primarily for logistics and manufacturing applications.

View Mujin's company page

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Backend System Engineer at Mujin