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Lead - Java Fullstack Developer

Nexus Corporation Sumida, Japan

Staffing and Recruiting · 11-50 employees

7 h ago
java Principal (10+ yrs) Contractor Japan
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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

Java Spring Boot Angular React Microservices MySQL PostgreSQL Docker AWS TypeScript JavaScript RESTful APIs GraphQL CI/CD Agile Scrum

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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