Top Software Engineer Jobs in Japan

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.

Build and scale Base360.ai: design APIs, services, and cloud-native infrastructure; implement event-driven automations, AI-powered workflows, and integrations (Airbnb, Stripe, Twilio, OpenAI). Own projects end-to-end to automate operations, improve pricing and guest experiences, and enable global scaling.

Design, develop, maintain, and deploy reliable backend services for the Robot Platform; improve test coverage, CI/CD, and monitoring; collaborate cross-functionally; monitor and troubleshoot production services and occasionally travel to Woven City for on-site maintenance.

Design and implement production-quality C++ vehicle control and estimation software using Model Predictive Control and control theory. Translate high-level requirements into implementable designs, negotiate implementation details, and validate performance from unit tests through integrated simulation and vehicle tests.

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.

Provide front-line production support and troubleshooting for U.S. equities execution infrastructure during Asia hours. Maintain exchange connectivity, resolve order rejects, develop Python monitoring/diagnostic tools, coordinate incidents with exchanges and global teams, participate in testing and ensure production readiness.

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, implement, and maintain scalable, high-availability backend brokerage systems for Japan. Build gRPC/REST microservices, integrate with Japan market infrastructure and vendors, ensure regulatory compliance, participate in on-call rotations, troubleshoot incidents, and collaborate across global teams while mentoring and driving regional engineering efforts.

The Senior Software Engineer will focus on building and maintaining SDKs and services for Speechify's product, optimizing functionality, and collaborating with product teams to enhance user experience.

Join the Core Experiences Team to build and maintain foundational services, optimize functionality, and deliver solutions with a focus on simplicity and reliability.

Lead the design and development of Windows desktop applications, enforce best practices, drive accessibility efforts, collaborate on UI/UX, and manage full feature lifecycle.

The Senior Software Engineer will enhance Speechify's user experience by developing and maintaining core services using Kotlin, optimizing functionality, and collaborating with product teams.