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Java Fullstack Developer

Sumida-ku, TokyoContractPosted Oct 16, 2026

Job description

We are hiring a Java Full Stack developer to work on an Insurance project in Tokyo.

Responsibilities

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 Requirements 5-6 years of work experience 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

Description copied from Nexuscorp's careers page. Read the full posting before you apply.

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