I'm Kei Oikawa, a Full-Stack Engineer with 10+ years of experience in startup environments.

• Programming (TypeScript, JavaScript, Go, Dart, Shell Scripting)
• Web app development (React, Svelte, Vue, Deno, Angular, WebSocket, TailwindCSS)
• Mobile App Development (Flutter, NativeScript, Cordova, iOS, Android)
• API/Batch Development (Golang, gorilla/mux, NodeJS, Express, Fastify, AWS Batch)
• Web Scraping (Playwright, Agouti, Headless Chrome)
• Cloud Development (AWS, Firebase)
• Container Development (Docker, ECS, AWS Batch)
• Testing (Flutter Test, Cypress, Jest, Go Table Driven Test)
• Database (MySQL, PostgreSQL, GORM v1/v2, BigQuery, Firestore, Redis, MongoDB, Prisma)
• DevOps (Github Actions, AWS CodeDeploy, CodeMagic, Fastlane)
• Documentation (Notion, Backlog, Redmine)

• Full-Stack Engineer @ Musiversal [2024-]

• Freelance Software Engineer @Various Startups [2023-]

  • Developed REST API using Golang
  • Implemented user interfaces using React, Next.js

• CTO and Full-Stack Engineer @ Standing Ovation [2014-2023]

  • Developed XZ (Android/iOS), a mobile fashion app helping users choose what to wear based on their fashion items and weather, which acquired 2M users worldwide.
  • Drove a fashion product recommendation SaaS for e-commerce websites, leveraging customers' fashion wardrobe data.
  • Built several data scraping engines for collecting fashion data from E-commerce sites, which allows users to import their order histories.
  • Led a development team of frontend, backend, AI, and data engineers.

• Frontend Engineer @ Future Architect [2009-2014]

  • Addressed Internet Explorer memory leaks in several enterprise web applications.
  • Created a Web testing tool with C#, streamlining integration testing for several projects' web applications.

education:
  [
    "Master's in Information Technology"
  ]
fields_of_interests:
  [
    "Cross-platform Mobile App Development",
    "Mobile App Development",
    "Web Service Development",
    "DevOps",
    "Developer Productivity"
  ]
currently_learning: ["Web3", "LLM"]
hobbies: ["Cycling", "Baroque Violin"]