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Lead Java Fullstack Developer

Nexus Corporation


Job Location:

Tokyo - Japan

Salary: Not provided by the employer
Experience Required: 10-11years
Posted: 25 August 2026 (5 days ago)
Application Deadline: 22 November 2026
Vacancies: 1 Vacancy

Job Summary

We are hiring two (2) Leads with Java Fullstack development experience to work on an Insurance project in Tokyo.

Responsibilities:
  • Design scalable microservices manage system integrations and optimize database schemas
  • Develop modular user interfaces and build high-performance secure backend APIs and frontend applications
  • Conduct code reviews enforce coding standards and mentor junior developers
  • Backend Development: Build secure business logic and microservices using Java and frameworks like Spring Boot.
  • Frontend Development: Design responsive user interfaces with Angular or React.
  • API Integration: Develop and expose robust RESTful APIs or GraphQL endpoints to bridge the frontend and backend.
  • Database Management: Design schemas write optimized queries and manage data via relational databases (MySQL PostgreSQL) or NoSQL options (MongoDB).
  • Deployment & DevOps: Containerize applications using Docker and support CI/CD deployment pipelines on cloud platforms (AWS Azure).
  • Quality Assurance: Write unit and integration tests (JUnit Jest) and participate in peer code reviews. 1 2 3 4
  • Should have worked in Agile lifecycle and have good understanding on how Scrum teams operate
  • Collaboratively work with cross functional teams


Requirements
  • 10 years of work experience out of which at least 2-3 years of experience as a Lead managing/mentoring a team of junior developers
  • Good hands-on knowledge of Java (JDK 8/11/17) JavaScript / TypeScript HTML5 CSS3
  • Knowledge of Core Java Spring MVC Java Spring Boot API Microservices Python
  • Experience in Angular or
  • Working knowledge of Database MySQL PostgreSQL Oracle SQL Server
  • Working experience in GitHub Tomcat and Maven
  • Experience with AWS Services: S3 ECS RDS
  • Exposure and participation in Agile / Scrum environment
  • Japanese language preferred not essential



Required Skills:

We are hiring two (2) Leads with Java Fullstack development experience to work on an Insurance project in Tokyo.

Responsibilities:
  • Design scalable microservices manage system integrations and optimize database schemas
  • Develop modular user interfaces and build high-performance secure backend APIs and frontend applications
  • Conduct code reviews enforce coding standards and mentor junior developers
  • Backend Development: Build secure business logic and microservices using Java and frameworks like Spring Boot.
  • Frontend Development: Design responsive user interfaces with Angular or React.
  • API Integration: Develop and expose robust RESTful APIs or GraphQL endpoints to bridge the frontend and backend.
  • Database Management: Design schemas write optimized queries and manage data via relational databases (MySQL PostgreSQL) or NoSQL options (MongoDB).
  • Deployment & DevOps: Containerize applications using Docker and support CI/CD deployment pipelines on cloud platforms (AWS Azure).
  • Quality Assurance: Write unit and integration tests (JUnit Jest) and participate in peer code reviews.
  • Should have worked in Agile lifecycle and have good understanding on how Scrum teams operate
  • Collaboratively work with cross functional teams


Requirements
  • 10 years of work experience out of which at least 2-3 years of experience as a Lead managing/mentoring a team of junior developers
  • Good hands-on knowledge of Java (JDK 8/11/17) JavaScript / TypeScript HTML5 CSS3
  • Knowledge of Core Java Spring MVC Java Spring Boot API Microservices Python
  • Experience in Angular or
  • Working knowledge of Database MySQL PostgreSQL Oracle SQL Server
  • Working experience in GitHub Tomcat and Maven
  • Experience with AWS Services: S3 ECS RDS
  • Exposure and participation in Agile / Scrum environment
  • Japanese language preferred not essential