Top Software Engineer Jobs in Japan

Develop Flight Software for lunar lander Guidance, Navigation, and Control. Collaborate on GNC algorithms, perform design analysis, and support integration.

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.

The Principal Software Engineer will lead SW development for automotive embedded systems, interact with global customers, and handle complex technical issues while ensuring quality audio system solutions.

As a Staff/Senior Machine Learning Platform Engineer, you will architect and scale ML infrastructure, manage data pipelines, and mentor junior engineers.

Design and maintain RESTful APIs, build data warehouses, develop data pipelines, and optimize data operations using cloud platforms.

Lead the design and implementation of scalable gameplay systems for mobile games. Ensure high performance and reliability while mentoring other engineers. Collaborate with cross-functional teams to enhance user experiences.

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.

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.

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.

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.

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.

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.

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

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.

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.

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.

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 optimize embedded device drivers and inter-processor communication for MCU and Linux platforms. Contribute to embedded architecture across bare-metal firmware, RTOS, hardware abstraction, and host libraries. Lead board bring-up and hardware-firmware debugging with test automation, build/flash CI, and collaboration with electronics and robotics teams.

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, 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.

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.

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.

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.

Design and implement core Web3 protocol features and secure smart contracts in Solidity. Integrate blockchain solutions, optimize scalability and performance, review code, and mentor junior engineers while staying current on EVM internals and DeFi protocols.