Senior Frontend Engineer
Tokyo, Japan (MJHQ)
1 - Software Development – Frontend System Team /
Full-Time (English) /
On-site
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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
- 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.
Minimum Requirements
- 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.
Preferable Requirements
- 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.
Attractiveness
- 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?
Interview Process:
- 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.
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
We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses and identifying potential inconsistencies or verification signals in application materials based on available information. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.
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