Release Engineer (Developer Experience / DevEx)

About the role

Mujin is hiring a Release Engineer for a growing team to focus on shaping and building scalable, reliable processes for software packaging, validation, and delivery rather than just building features. Regular releases are critical to maturing MujinOS as a product, ensuring consistent quality and completeness across complex systems. Turning ongoing development into stable, releasable versions requires not only coordination, but also development of internal tooling, workflows, and automation systems. In this role, you will make releases more predictable, efficient, and scalable by designing and developing release workflows, internal tools, and quality gates-while staying hands-on with release-stage QA and integration validation. You will work closely with engineers responsible for our core software systems, QA, and documentation owners, helping ensure that what is built can be confidently released, clearly understood, and effectively used by both internal teams and end users. 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 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 Japan Relocation Support Visa sponsorship Flight ticket support Shipping expenses coverage up to a specified limit Assistance for housing

Requirements

• Hands-on experience developing tools or automation using languages such as Python or C++
• Ability to build scripts, tools, or systems to improve release workflows, QA processes, and automation
• Practical experience designing and operating production release workflows
• Strong understanding of system-level testing and release QA
• Experience working with planning or tracking tools (e.g. Jira or equivalents)
• Experience working cross-functionally and taking ownership of ambiguous initiatives

Additional Information

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.

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