Available to hire
I’m a Senior Software Engineer with over 10 years of experience designing, building, and maintaining scalable software solutions for complex distributed systems. I specialize in backend development, RESTful API design, and workflow orchestration, and I enjoy solving challenging automation problems in fast-paced environments.
I thrive in cross-functional, remote collaboration with product managers and engineers to deliver robust automation platforms. My strengths include Golang, Temporal.io, OpenTelemetry, and containerized deployments, with a focus on observability, reliability, and performance.
Skills
Work Experience
Senior Software Engineer at Visa
February 1, 2023 - PresentArchitected and implemented backend automation solutions using Golang, improving internal workflow efficiency by 35%. Developed and optimized RESTful APIs for internal platform integrations serving 200+ microservices. Designed and maintained complex asynchronous workflows using Temporal.io, reducing operational delays by 40%. Integrated OpenTelemetry to provide full observability across distributed systems, improving debugging speed by 50%. Configured Grafana, Prometheus, and Tempo dashboards for real-time monitoring of network automation pipelines. Implemented containerized environments using Docker to ensure consistent deployment across dev, staging, and production. Led migration of legacy backend services to Golang microservices, enhancing scalability and maintainability. Conducted root cause analysis of distributed system failures, reducing incident response time from hours to minutes. Collaborated with product managers and engineers to define technical requirements for automation
Software Engineer at Wave Europe
October 1, 2020 - December 31, 2022Developed web applications using React and Vue.js, delivering intuitive interfaces for complex enterprise workflows. Designed RESTful APIs consumed by multiple frontend clients, improving internal tool integration efficiency by 25%. Implemented backend services using Java with robust exception handling and logging for scalable deployments. Integrated monitoring solutions using Prometheus and Grafana, enabling proactive system health tracking. Built asynchronous job processing pipelines with reliable error handling and retry mechanisms. Collaborated with remote teams to define architecture and deliver high-quality software within Agile frameworks. Optimized database queries, improving backend service performance by 20% on critical modules. Conducted code reviews and established best practices for frontend-backend communication. Developed feature-rich dashboards for clients to manage and visualize large datasets. Coordinated deployment strategies using Docker and cloud-based environments
Full Stack Developer at Treative
April 1, 2017 - September 30, 2020Designed and implemented full-stack web applications using .NET backend and React frontend. Built scalable APIs supporting internal and client-facing applications with secure authentication. Orchestrated workflow automation for client projects, reducing manual processing by 30%. Integrated third-party services using REST APIs to extend platform functionality. Applied containerized deployments using Docker for consistent development and production environments. Monitored system performance and applied tuning techniques to optimize response times. Implemented unit and integration tests, increasing software reliability and reducing bugs in production. Collaborated with product teams to deliver features aligned with business objectives. Mentored junior developers on full-stack development and Agile methodologies. Migrated legacy systems to modern web frameworks, improving maintainability and performance. Developed dashboards and reporting tools to track business KPIs for clients.
Software Developer at Coincheck
June 1, 2014 - March 31, 2017Built responsive web applications using React and Vue.js for financial and trading platforms. Developed RESTful backend services using Java to handle high-frequency data streams. Implemented robust authentication and authorization modules for secure platform access. Optimized database queries to handle large volumes of trading transactions efficiently. Designed APIs enabling third-party integrations with external financial services. Participated in Agile development cycles, ensuring timely delivery of product features. Created automated tests and CI/CD pipelines to streamline deployment processes. Monitored system performance and resolved production issues, reducing downtime by 20%. Collaborated with international teams to design and deploy multilingual platforms. Implemented caching strategies that decreased API response time by 25%. Conducted security audits to comply with regulatory standards for financial applications.
Education
Bachelor of Computer Science at Osaka University
January 1, 2009 - January 1, 2014Qualifications
Industry Experience
Software & Internet, Professional Services, Financial Services
Skills
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