Top Software Engineer Jobs in Tokyo

Lead design, implementation, integration, V&V and operations of embedded flight software for lunar landers. Define product baselines, requirements, ICDs, safety and reliability analyses (FTA, FMEA/FMECA), system trade-offs, test plans, and support AIT/flight test operations and MBSE tool maintenance.

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.

Design and ship deterministic, safety-critical motion planning systems for autonomous vehicles. Build reliable fallback planners for degraded perception and system faults, evaluate behavior at scale using simulation and logs, develop metrics and tools, and collaborate with perception, prediction, controls, safety, and remote assistance teams.

Develop and validate real-time driving planning and velocity-control algorithms for ADAS/autonomous vehicles. Implement embedded, safety-conscious software in C/C++/MATLAB/Simulink, evaluate performance with test vehicles and simulators, and collaborate cross-functionally to align software with vehicle controls and customer requirements.

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

Improve developer experience and deployment processes by designing and building tools, libraries, and frameworks; optimize build/compile times; develop scalable deployment tools for automotive and cloud platforms; enhance software deployment and data collection frameworks; identify and resolve bottlenecks across the software stack.

Lead design, development, and delivery of cloud-native, microservice-based software products. Drive DevSecOps/CI-CD practices, API/system integration, quality assurance, customer-facing solution design, project leadership, and adoption of AI/IoT/digital-twin technologies.

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.

Responsible for managing software and customer tickets, supporting project teams, and ensuring compliance with process timelines and quality standards in software development.

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.

Build full-stack product surfaces, backend services, APIs, databases, dashboards, internal tools, vendor workflows, and observability for reinforcement learning data and evaluation systems. Develop interfaces for browsing environments, inspecting trajectories, reviewing quality, debugging failures, and understanding model behavior. Partner with research, operations, vendors, and go-to-market teams to translate ambiguous requirements into reliable products. The role also involves production debugging and cloud infrastructure collaboration.

As a Telematics Software Integrator Engineer, you'll be responsible for managing software requirements, ticket handling, and facilitating collaboration between teams to enhance software quality and efficiency.

Develop and maintain embedded software for router and LAN switch products. Design, code, test, and debug modules; collaborate cross-functionally with hardware, QA, and other software teams; research new technologies and contribute to architecture and feature design.

Develop and deploy ML and classical perception systems for L4 autonomous trucks: design/train 3D detection models across LiDAR/camera/radar, build sensor-fusion and tracking pipelines, operate data engines, validate safety-critical capabilities through simulation and on-road validation.

Design, implement, and verify firmware and embedded software for humanoids, dual-arm robots, robotic hands, and teleoperation systems. Develop low-level control platforms, device drivers, communications (CAN/UART/SPI/I2C/Ethernet), logging/diagnostics, and interfaces to ROS/ROS2. Conduct real-robot testing, failure analysis, and system integration with mechanical, electrical, AI, and cloud teams to improve reliability and reproducibility for research data collection.

Build and scale the internal developer platform: create tools, services and automation (CI/CD, canaries, feature flags, access workflows) using IaC (Pulumi/Python) and Kubernetes to enable safe, fast shipping. Drive platform initiatives, mentor teams, lead AI tool adoption for engineering, participate in on-call and design/code reviews, and ship major improvements across the organization.

The Senior Software Engineer designs, develops, integrates, and debugs software for Biomek automated systems, collaborating with customers and R&D teams while managing projects and requirements.

As a Senior Backend Engineer, you'll enhance Mapbox's EV data infrastructure, designing data pipelines and APIs while ensuring data quality and scaling services for global EV coverage.

Design, prototype, and implement scalable 3D CAD/CAM software and algorithms for medical device mass production. Collaborate across manufacturing, product, and QA teams to define requirements, draft architecture, optimize processes (including 3D printing and laser workflows), and mentor junior engineers throughout the full software lifecycle.

Lead design, implementation, deployment, and maintenance of production ML systems for document understanding. Build scalable model-serving infrastructure, develop and fine-tune ML models (CV/NLP/OCR), collaborate with product owners, and mentor junior engineers.

Design, build, and operate scalable, highly available Threat Protection and ShadowAI services. Own features end-to-end, implement detections and policies for generative AI and web threats, maintain tests and SLOs, use AI-assisted tooling responsibly, and collaborate with product, security, and ops to deliver reliable, secure production services.

Design, build, deploy, and operate backend features and services in a cloud environment. Ensure scalability, reliability, and performance, collaborate cross-functionally, use AI-assisted development tools, and reduce production incidents while meeting sprint and roadmap commitments.

Design and build scalable backend brokerage systems for Japan, develop gRPC/REST microservices and vendor integrations, translate regulatory requirements into technical specs, participate in on-call rotations, troubleshoot production incidents, and collaborate with global teams to support Japan market features like NISA and MyNumber.