Top Software Engineer Jobs in Tokyo

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.

Lead architecture, modernization, and delivery of enterprise Direct Marketing digital platforms. Drive end-to-end full stack engineering, remain hands-on in coding and troubleshooting, and lead AI/Generative AI initiatives from PoC to production. Partner with stakeholders to convert business needs into scalable, secure solutions supporting customers, agencies, partners, call centers, and internal users.

Lead technical design and delivery of API-driven, cloud-native integration solutions. Translate business requirements into scalable architectures, perform code reviews, mentor engineers, support production issues, and apply AI-assisted engineering practices to improve productivity and solution quality.

Develop and validate mission-critical spacecraft flight software in C/C++, Python, and Java. Responsibilities include software design, coding, unit and integration testing, simulation-based verification, issue resolution, documentation, and subsystem integration. Improve CI/CD pipelines, containerized development environments, testing automation, and spacecraft simulation models. Collaborate with subsystem teams to clarify requirements and advance verification tasks. Knowledge of spacecraft control systems, AOCS, GNC, or FDIR is advantageous.

Develop and maintain full-stack applications using React.js, Node.js, Java, AWS, MySQL, and DynamoDB. Build responsive frontend components, secure RESTful APIs, cloud-native services, and CI/CD deployments. Participate in Agile ceremonies, code reviews, troubleshooting, documentation, testing, and collaboration with product, design, QA, and DevOps teams. Use AI-assisted development tools for coding, testing, debugging, refactoring, and documentation.

Customer-facing applications engineer who deploys and integrates Shield AIs Hivemind autonomy software worldwide. Develops AI/autonomy applications using the company SDK, provides technical support and training, debugs API integrations, assists pre- and post-sales activities, creates documentation, and collaborates with product engineering to drive customer-focused improvements.

Deploy and integrate Shield AI's Hivemind autonomy software with customers worldwide. Provide on-site technical support, training, debugging, and documentation. Develop AI/autonomy applications using the Shield AI SDK, collaborate with engineering and sales for pre- and post-sales activities, and incorporate customer feedback to improve products.

Develop and integrate QNX systems software, troubleshoot complex embedded and system-level issues, identify root causes, and deliver solutions for external customers. The role requires close collaboration with customers and internal engineering teams, clear communication of technical concepts, and management of multiple priorities. Responsibilities include supporting QNX technologies, debugging software, providing technical advice, and maintaining customer relationships while handling sensitive information professionally.

Design, build, and operate scalable data infrastructure and experimentation platforms for mobile games. Develop batch and streaming pipelines, cloud data platforms, telemetry systems, experimentation capabilities, and AI-assisted engineering guardrails. Lead architecture, technical direction, cross-team delivery, and operational ownership while mentoring engineers and potentially managing the team.

Develop real-time motion control software for robotic manipulators, including inverse kinematics, collision avoidance, compliance control, actuator drivers, and ROS2 integration. Build and integrate production-ready robot control software, simulate robotic systems in Gazebo, and debug issues through experiments and metrics. The role requires advanced C++, robotics control theory, MoveIt, motor control, and collaborative product development skills.

Lead the design, development, and optimization of scalable backend services supporting real-time ad recommendations and serving infrastructure. Own technical roadmaps, improve latency and throughput, enhance observability and incident management, collaborate with product and science teams, maintain code quality, mentor engineers, and participate in on-call rotations.

Develop, simulate, prototype, verify and debug GNC flight software for spacecraft using C/C++ and Python. Build dynamics, sensor/actuator models (USF-Sim), run Monte Carlo analyses, maintain CI/CD (GitLab), containerized environments (Docker), and document work in Jira/Confluence while collaborating with multidisciplinary teams.

As a Software Engineer at Spellbrush, you'll build advanced data pipelines and infrastructure to support AI research while collaborating with a talented team.

Design, build, and optimize scalable LINE messaging services, LIFF applications, and LINE MINI Apps on AWS. Develop product features and internal tools, integrate with an advertising platform, translate business needs into technical solutions, and improve ecosystem performance. The role requires collaboration across Japan and the United States, strong software engineering fundamentals, and business-level Japanese and English communication.

Build and ship native Android features for an AI-enabled neobank using Kotlin and modern Android architecture. Integrate backend APIs, improve performance and stability, use analytics to iterate, and design AI-assisted mobile experiences in collaboration with product and design.

Build and scale Base360.ai’s short-term rental platform, including customer-facing applications, APIs, automation engines, AI-powered workflows, third-party integrations, and cloud infrastructure. Develop systems for reservations, pricing, payments, guest communication, property operations, reporting, and financial workflows. Own projects end to end, make architectural decisions, ensure reliability, and deliver scalable products in a remote-first startup environment.

Develop and optimize real-time onboard autonomy software for heavy vehicles, including perception, sensor fusion, planning execution, control, and safety monitoring. Maintain middleware for sensor ingestion, ensure deterministic latency and throughput, implement ASIL-relevant fault detection and recovery, build diagnostics and observability, write unit/integration/HIL tests, contribute to CI/CD, and productionize research into efficient C++ deployments.

Design and implement high-performance control modules for off-road autonomous vehicles. Characterize vehicle dynamics, close sim-to-real gaps, and build optimal-control solutions (e.g., nonlinear MPC, MPPI). Test controllers on production vehicles and collaborate with customer engineers to deploy robust autonomy under real-world constraints.

Provide global support for IFS business applications in the manufacturing domain: resolve medium-complexity customer issues, meet SLA/KPI targets, execute maintenance, share knowledge, train colleagues, and propose process improvements to increase customer satisfaction.

Develop and integrate embedded vehicle software into the Vehicle OS using C/C++ and Simulink. Work directly with customers to port and integrate features, manage vehicle integration timelines, set up SIL/HIL testing across timezones, influence technical strategy, and ensure high-quality production software.

Design, build, and maintain scalable, high-availability brokerage systems for Japan. Develop backend microservices, APIs, financial integrations, and middle- and back-office systems supporting multi-currency transactions, accounting, settlement, and Japan-specific regulations. Collaborate with global engineering teams and Japanese regulators, vendors, and partners; translate requirements into technical solutions. Participate in incident response, on-call rotations, architecture, mentoring, recruitment initiatives, and regional engineering projects.

Own HUD’s production infrastructure and backend platform systems, focusing on reliability, scalability, performance, cost, deployment safety, and developer experience. Build AWS infrastructure with Terraform and Kubernetes, improve CI/CD and observability, design resilient services and asynchronous systems, manage incidents, and develop internal automation and tooling. The role supports high-availability AI, marketplace, and data-heavy workloads.

The role involves developing the Guidance Navigation Control subsystem for a lunar lander, including algorithm design, testing, and integration with teams for operation preparation and troubleshooting.

Join Valeo as a VIE Software Engineer, supporting software project management and quality assurance in a dynamic, multicultural environment focused on automotive innovation.

Lead backend architecture and build scalable, high-concurrency services and APIs (Node.js) powering web and mobile. Own components end-to-end, manage CI/CD and infrastructure (IaC, containers, cloud), improve reliability, and collaborate with PM/design to deliver core features like live interactions and checkout.