Junior Backend Engineer: Build REST APIs with Spring Boot

Radii Global; Kuala Lumpur; On-site; MYR 67,000 - 112,000; Full time

Job summary

Radii Global is seeking a junior backend engineer in Malaysia to join an established product engineering team. You will work mainly on Java and Spring Boot services, backed by PostgreSQL and a versioned migration workflow, growing into owning full backend features within your first few sprints.

This delivery role includes mentoring; you will pick up scoped backend stories, design and implement endpoints with tests, and see changes through code review to a merged PR.

Qualifications

• Java and Spring Boot: Working knowledge of Java and the Spring Boot ecosystem, including controllers, services, dependency injection and configuration. You have built and shipped real endpoints.
• REST API design: Understands HTTP methods, status codes, request and response modelling, validation, pagination and error handling.
• Relational databases: Comfortable with SQL and PostgreSQL, basic data modelling, indexes and joins, and understands why a schema change needs a migration.
• Security basics: Understands token based authentication, role or permission checks, and why authorisation belongs on the server and not in the interface.
• Testing: Writes unit tests, and is willing to learn integration testing against a real database.
• Debugging: Can read a stack trace and application logs and work back to the cause instead of guessing.
• Reads frontend code: Able to open a React and TypeScript codebase and find where your endpoint is called and how its response is used.
• Runs the frontend locally: Comfortable starting the frontend application and checking your change in the actual interface before you call it done.
• Understands the UI contract: Knows what a renamed field, a changed enum value or a new required field does to a live screen, and communicates it before merging.
• Version control: Confident with Git: branching, commits, pull requests and responding to code review feedback.
• Agile delivery: Comfortable working in two week sprints with an issue tracker such as Azure DevOps, Jira or similar.
• Code review: Takes review comments as normal engineering practice, responds to every point, and re-checks the code before saying it is fixed.
• Communication: Clear written English. Flags blockers early instead of going quiet.
• AI coding tools: Hands on use of an AI coding assistant such as Claude Code, Cursor or GitHub Copilot in real work, not just experiments.
• Prompt driven workflow: Able to give clear, structured instructions to scaffold, refactor, debug and document code.
• Critical validation: Reviews and verifies AI generated output instead of accepting it blindly. You own the quality of everything you ship.

Responsibilities

• Build and maintain REST endpoints, business logic and data access in Java and Spring Boot.
• Design and implement database changes in PostgreSQL through versioned migrations, with care for existing data.
• Implement authentication, authorisation and role based access rules correctly on every endpoint you touch.
• Verify your endpoints against the frontend that consumes them, so contract changes do not silently break the UI.
• Write unit and integration tests for what you ship, and keep the build green.
• Take part in pull request reviews as an author, respond to every comment, and re-check the code before saying it is fixed.
• Keep your work visible and current on the team's board, branches and pull requests in Azure DevOps.
• Raise questions, risks and blockers early in standup and in writing.

Skills

Java

Spring Boot

REST API design

PostgreSQL

SQL

Testing

Git / version control

Azure DevOps / Jira

Agile delivery

Reads frontend code

Tools

Azure DevOps

Git

Jira

Job description

Radii Global is seeking a junior backend engineer in Malaysia to join an established product engineering team. You will work mainly on Java and Spring Boot services, backed by PostgreSQL and a versioned migration workflow, growing into owning full backend features within your first few sprints.

This delivery role includes mentoring; you will pick up scoped backend stories, design and implement endpoints with tests, and see changes through code review to a merged PR.