M
Mujininc8mo ago

Senior Frontend Engineer

JapanJapan·TokyoFull-Time (English)senior
EngineeringOtherFrontend EngineeringSenior Frontend Engineer
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Quick Summary

Overview

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…

Key Responsibilities

Develop and implement high-quality frontend applications using React and TypeScript, adhering to best practices and coding standards. Create and maintain reusable components and libraries to promote consistency and efficiency across projects.

Technical Tools
figmagraphqljavascriptjestreactrusttypescriptworkdayagileci-cdi18n

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.


As a Senior Frontend Engineer at Mujin, you will guide junior team members and enhance the efficiency of our real-time user interface. The Frontend Team at Mujin is devoted to refining the user experience and interface of our robot controller's web UI. You will collaborate with skilled and committed engineers who possess expertise in this field. Read our team's interview article here:> At the forefront of building ”industrial robots for everyone”

Responsibilities

~2 min read
  • Develop and implement high-quality frontend applications using React and TypeScript, adhering to best practices and coding standards.
  • Create and maintain reusable components and libraries to promote consistency and efficiency across projects.
  • Optimize application performance by analyzing code, profiling, reducing bundle size, and leveraging browser APIs where possible.
  • Ensure the application is responsive and works seamlessly across different browsers and devices.
  • Review code and mentor junior developers to ensure quality and adherence to coding standards.
  • Extensive knowledge of JavaScript, TypeScript, React, and CSS.
  • Experience creating visual effects and animations using CSS and SVG.
  • Familiarity with Webpack, Rollup, esbuild, or other bundling tools. Comfortable creating and maintaining bundler configurations.
  • Extensive knowledge of web application optimization.
  • Proven track record of maintaining JavaScript libraries.
  • Experience with Jest, Mocha, Testing Library, or other testing frameworks, and deep understanding of CI/CD pipelines.
  • Experience with Figma plugin development.
  • Familiarity with GraphQL.
  • Experience with PixiJS for building rich and interactive web applications.
  • Ability to automate code quality checks with Eslint and SonarQube to ensure the highest code quality.
  • Knowledge of Rust and Web Assembly for building performant and efficient web applications.
  • Familiarity with i18n to develop applications that can be easily localized.
  • We work in a fast-paced, agile environment where we constantly collaborate, review ideas amongst peers, and test proposed solutions. We encourage continuous learning and brainstorming within our teams. We are focused on solving real-world problems and your contributions are deployed at an amazingly fast pace to empower industrial robots to perform tasks that were previously impossible.
  • Japan is known for its robotics technology. If you are coming to Japan why not work with products you can only build in this country?
  • Coding Assessment: Initial technical evaluation.
  • HR Interview: Discussion with Human Resources.
  • Hiring Manager Interview: One or two rounds with the hiring manager.
  • Take-Home Assignment & Feedback Interview (If Applicable): A task to complete on your own, followed by a feedback session.
  • 3-8-5 Tatsumi, Koto-Ku, Tokyo 135-0053, Japan

    8:45 - 17:45 (with a 60-minute break)

    • Based on experience and skills
    • Salary revision twice a year
    • Additional bonuses are available based on performance
    • 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

    What We Offer

    ~1 min read
    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
    • Visa sponsorship
    • Flight ticket support
    • Shipping expenses coverage up to a specified limit
    • Assistance for housing

    Location & Eligibility

    Where is the job
    Tokyo, Japan
    On-site at the office
    Who can apply
    JP
    Listed under
    Worldwide

    Listing Details

    Posted
    October 8, 2025
    First seen
    March 26, 2026
    Last seen
    June 7, 2026

    Posting Health

    Days active
    73
    Repost count
    0
    Trust Level
    23%
    Scored at
    June 7, 2026

    Signal breakdown

    freshnesssource trustcontent trustemployer trust
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    Senior Frontend Engineer