Backend-Heavy Full-Stack Developer - Java/Spring Expert

United States Digital Space LLC; Singapore; On-site; SGD 112,406 - 126,817; Full time

Benefits offered by this job

Health insurance

Job summary

United States Digital Space LLC seeks full-stack developers with strong backend Java 21 and Spring Boot experience, and frontend skills in TypeScript/React 19. You will design and maintain full-stack applications, build RESTful APIs, and implement Micro Frontend architectures for Wealth/Finance clients.

You will collaborate with analysts, managers, and other tech teams to deliver high-quality, scalable products. In-person work located in Singapore, with health insurance benefits.

Qualifications

• Expert backend with junior-to-mid frontend capabilities.
• Strong Java 21 and Spring Boot knowledge.
• Experience with modulith/microservices architectures.
• Relational databases & SQL optimization.
• RESTful API design and messaging systems.
• Unit & integration testing with established frameworks.
• Proficient in modern frontend tech including TS/React.
• Familiar with MFE and modern frontend tooling.

Responsibilities

• Design, develop, and maintain full-stack apps using Java Spring Boot and React.
• Build and optimize RESTful APIs and microservices.
• Implement Micro Frontend architectures.
• Drive best practices across the stack and collaborate with stakeholders.
• Troubleshoot production frontend and backend issues.
• Contribute to technical roadmap and system design discussions.

Skills

Java 21

Spring Boot

Modulith / Microservices

MariaDB / PostgreSQL

RESTful APIs

Message Queues

JUnit / Mockito / Karate

TypeScript

React 19

Redux / RTK / RTK Query

MFE Architecture

HTML5 / CSS3 / Responsive

Web Testing (Jest / RTL / Cypress / PW

Tools

Webpack

Vite

Storybook

Jest

React Testing Library

Job description

United States Digital Space LLC seeks full-stack developers with strong backend Java 21 and Spring Boot experience, and frontend skills in TypeScript/React 19. You will design and maintain full-stack applications, build RESTful APIs, and implement Micro Frontend architectures for Wealth/Finance clients.

You will collaborate with analysts, managers, and other tech teams to deliver high-quality, scalable products. In-person work located in Singapore, with health insurance benefits.