Top Software Engineer Jobs in Japan

Build and own end-to-end customer-facing features for web and mobile. Develop backend services and RESTful APIs in Node.js/TypeScript, responsive frontends in React/Next.js, integrate AI/LLM features, work with AWS infrastructure, ensure observability and security, contribute to CI/CD and testing, and mentor junior engineers in an Agile team.

The Principal Application Software Engineer will lead the integration and validation of AI software on automotive platforms, focusing on hardware interaction and performance in Japan.

Join Canonical as a Go Software Engineer to enhance developer workflows and build tools integrated with Ubuntu and modern SDKs, focusing on performance and user experience.

You will build and maintain container images, automate CI/CD processes, engage with the community, and mentor junior team members in a collaborative environment.

Own technical direction and execution for major products, systems, and engineering initiatives. Design scalable, reliable architectures across backend, frontend, APIs, databases, and infrastructure; write production code; lead architecture decisions; solve complex technical and production problems; improve engineering quality; and mentor engineers across teams.

Lead technical direction and hands-on execution for major products and systems. Design scalable and reliable architectures across backend, frontend, APIs, databases, and infrastructure; write code; drive architecture decisions; solve complex production problems; improve engineering quality, testing, security, observability, and development practices; and mentor engineers across teams.

Lead Software Engineer responsible for technical direction and hands-on execution of major products and systems. Designs scalable backend, frontend, API, database, and infrastructure solutions; writes code; leads architecture decisions; resolves complex production issues; improves engineering quality, testing, security, and observability; and mentors engineers across teams.

Develop and integrate AD/ADAS software: define requirements, code, test in simulation and vehicle, perform code reviews, improve CI/CD and workflows, and collaborate with cross-functional teams and customers.

The role involves designing and implementing features, debugging, maintaining documentation, and collaborating with the community in the Mir graphics stack.

The Software Engineer will support clients in Japan by gathering requirements, implementing solutions, troubleshooting issues, and providing training. They need to work collaboratively with various teams and adapt to client needs.

Lead technical direction and hands-on execution for major software products and systems. Design scalable backend, frontend, API, database, and infrastructure solutions; write and review code; resolve production issues; make architecture trade-offs; improve engineering quality, security, testing, and observability; lead critical initiatives; and mentor engineers across teams.

Lead technical direction and hands-on execution for major products and systems. Design scalable backend, frontend, API, database, and cloud architectures; write and review code; resolve production issues; make architecture trade-offs; improve testing, security, observability, and development practices; lead critical initiatives; and mentor engineers across teams.

Own technical direction and execution for major products and systems. Design scalable, reliable architectures across backend, frontend, APIs, databases, and infrastructure; write production code; lead architecture decisions; solve complex production issues; improve engineering quality; drive critical initiatives; and mentor engineers across teams.

Develop, optimize, test, and document Soroban smart contracts on the Stellar network for cross-border payment solutions. Integrate anchor services, collaborate with cross-functional teams, debug and support deployments, and stay current with blockchain and payments developments.

Develop and maintain high-security mobile applications using React Native, Swift, or Kotlin. Implement biometric authentication and secure key storage, collaborate with cross-functional teams to deliver features, troubleshoot and optimize performance, and recommend improvements based on emerging technologies.

Implement and optimize EVM-compatible features, reduce gas usage, develop and validate smart contracts, collaborate on Ethereum infrastructure, provide technical support, and stay current with Ethereum advancements.

The Software Engineer will improve developer experience and deployment processes by optimizing workflows, building tools, and enhancing software lifecycle reliability.

Design, build, and optimize scalable backend systems for an ads management platform on cloud (primarily AWS). Develop product features and internal tools, maintain core platform reliability and performance, and collaborate cross-functionally with US and Japan teams. Use agentic AI-assisted development practices; work early JST hours Tue–Fri and participate in occasional in-person meetings.

Develop and validate embedded software for ADAS and automated-driving HMI features in passenger vehicles. Responsibilities include requirements definition, functional design, implementation, testing, toolchain and infrastructure support, and ensuring software quality for mass production. The role collaborates with hardware and software teams and requires C or C++ development experience, implementation leadership, and business-level Japanese and English communication. Hybrid work requires three office days per week.

Integrate and deliver voice recognition software for automotive, collaborating with clients and internal teams, while setting up CI/CD environments and handling testing.

As a Senior Software Engineer, you will lead software development, mentor team members, contribute to system design, and oversee application development life cycles.

The Senior Software Engineer in Test builds and executes automated tests, develops testing tools, and collaborates on technical designs while ensuring system testability for the TraceLink platform.

You will design, develop, and maintain software for Edge AI devices, leveraging robust debugging skills and collaborating on innovative technologies.

Design, develop, test, deploy, and operate mission-critical, high-availability, high-security systems supporting PlayStation manufacturing. Collaborate with global stakeholders and external partners, drive performance and quality improvements, model complex business domains, ensure data integrity and transactional correctness, and lead technical reviews and operations in on-premises and container-based environments.

The Quantum Software Engineer will design, optimize, and troubleshoot quantum control workflows, working directly with customers and collaborating cross-functionally to develop scalable software solutions in Python.