Tokyo TEKsystems
  • High-impact modernization project for a major e-commerce marketplace
  • Work with a cutting-edge technology stack (Java 21, Spring Boot, React, Docker, Kubernetes, cloud storage)
  • Leadership and collaboration opportunities with top engineers and product managers

Senior Java Backend Developer – Digital Asset Management Platform
Location:
Tokyo

About The Project
Join a high-impact initiative to rebuild and expand a legacy Digital Asset Management (DAM) platform for a leading e-commerce marketplace. This platform enables merchants to register and manage product images and banners, supporting marketplace growth and innovation. The new system will feature a robust core API, cloud-based object storage, a React-powered Web UI, and external APIs for seamless integration.

Key Responsibilities

  • Lead backend development using Java 21 and Spring Boot
  • Collaborate with a small frontend team utilizing a React-based framework
  • Design and develop REST APIs with strong emphasis on testing (JUnit) and code reviews
  • Architect scalable, maintainable systems for high-traffic environments
  • Integrate relational (MySQL/distributed) and NoSQL databases, caching, and messaging systems (Redis, Kafka, RabbitMQ, Memcached)
  • Implement container architectures (Docker, Kubernetes)
  • Work closely with engineers and product managers to drive technology selection and detailed design
  • Break down work into actionable tasks and manage execution

Required Skills

  • 5+ years backend development experience (Java/Spring Boot)
  • 5+ years REST API design and development, JUnit testing, code reviews
  • Experience with relational and distributed databases
  • Hands-on experience with container architectures (Docker, Kubernetes)
  • Experience with application design for traffic scalability
  • Experience implementing caching and integrating NoSQL/messaging systems
  • Experience in frontend development using React (small team, 1–2 engineers)

Tech Lead Additional Requirements

  • Experience managing large-scale development projects (50+ person-months), including parallel management of multiple projects
  • 5+ years as a Tech Lead, including architecture design for high-traffic web systems and technical decision-making
  • Experience designing systems for scalability and maintainability
  • Experience with Google Cloud Storage

Mindset & Behavior

  • Strong leadership in decision-making and problem-solving
  • Effective communicator, able to lead meetings and collaborate with stakeholders
  • Ability to break down work and manage execution

Ready to make an impact?
Apply now to help shape the future of digital asset management for a leading e-commerce platform



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