Seigo Kitamura

Software Engineer (Java / Spring Boot / Angular / AWS)

About Me

I am a software engineer with experience in backend and frontend development, specializing in Java, Spring Boot, Angular, and AWS. I have contributed to multiple enterprise-scale aviation projects including system renewals, platform modernization, and operational maintenance. I focus on delivering reliable systems, collaborating with offshore teams, and writing maintainable, high-quality code.

Professional Experience

Avanade — Senior Analyst / Software Engineer

Dec 2025 – Present

  • Focused on software engineering and cloud-based system development.

Tata Consultancy Services Japan — Software Engineer

Apr 2022 – Nov 2025

Backend Engineer, Aviation Platform Modernization

Nov 2024 – Nov 2025

  • Developed backend APIs with Spring Boot for corporate customer web platform.
  • Implemented login flows, SSO, member management, card operations, and batch processing.
  • Deployed services using AWS ECS Fargate, API Gateway, Lambda, EventBridge, CloudWatch.
  • Worked closely with offshore teams; served as interpreter in meetings.

Frontend Engineer, Flight Reservation Web App

Jun 2024 – Oct 2024

  • Implemented requirement changes and fixed bugs using Angular.
  • Managed tasks with Jira and deployed via Bitbucket pipelines.
  • Participated in release operations and production deployment.

Frontend Engineer, Mileage System Renewal

Sep 2022 – May 2024

  • Implemented Angular features for a mileage management renewal project.
  • Deployed application using AWS S3 and managed tasks via Redmine.
  • Assigned to India for six months to collaborate with offshore members.

New Graduate Training

Apr 2022 – Aug 2022

  • Completed foundational training in Java, networking, and business communication.

Key Projects

  • Corporate Customer Platform Modernization (Backend)
    Spring Boot API development, authentication flows, batch operations, AWS ECS/Lambda/EventBridge deployment.
  • Flight Reservation Operation (Frontend)
    Angular-based feature implementation, bug resolution, CI/CD with Bitbucket pipelines.
  • Mileage System Renewal (Frontend)
    Angular implementation, AWS S3 hosting, six-month offshore collaboration in India.

Skills

  • Languages: Java, TypeScript, SQL
  • Frameworks: Spring Boot, Angular
  • Cloud: AWS (ECS Fargate, Lambda, API Gateway, EventBridge, S3, CloudWatch)
  • Tools: Docker, Jira, Bitbucket, GitHub, Jenkins
  • Other: Offshore collaboration, bilingual communication

Contact

GitHub: github.com/k5tar
LinkedIn: linkedin.com/in/seigo-kitamura
Email: k5tar4biz@gmail.com