Top Software Engineer Jobs in Osaka

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.

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.

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.

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.

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.

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.

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.

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.

Design, optimize and maintain the exchange's low-latency matching and risk engines. Build and scale trading gateway connectivity, improve throughput/latency, support REST/WebSocket client integrations, debug complex issues, write thorough unit and integration tests, and collaborate with Quant, Gateway, and Product teams to enhance blockchain signature SDKs.