Lead - Java Fullstack Developer
Nexus Corporation Sumida, Japan
Staffing and Recruiting · 11-50 employees
About the role
The Lead Developer will design scalable microservices, manage system integrations, and optimize database schemas for insurance projects. They are also responsible for mentoring junior developers, enforcing coding standards, and conducting code reviews.
What they look for
Requirements
Candidates must have 10+ years of experience, including at least 2-3 years in a leadership role managing teams. Proficiency in Java, Spring Boot, and modern frontend frameworks like Angular or React is required.
Full description
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 React.js
- 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
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