Full-Stack Backend-Focused Developers

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

Job Role: Full-Stack Backend-Focused Developers

Mandatory Skills

Expert-level backend knowledge with junior-to-mid-level frontend capabilities

Required Backend Technical Skills

• Strong proficiency in Java (Java 21) with deep understanding of core concepts, coupled with expert-level Spring Boot framework knowledge (MVC, Data, Security, Cloud).
• Strong understanding of modulith/microservices patterns and best practices,
• alongside experience with relational databases (e.g.,MariaDB, PostgreSQL) and SQL optimization.
• Strong knowledge of RESTful API design principles and experience with message queues (Kafka, IBM MQ, etc.).
• Proven expertise in unit testing and integration testing (JUnit, Mockito, Karate), and a strong understanding of design paterns and SOLID principles.

Required Frontend Technical Skills

• Expert-level Typescript React 19 experience, demonstrating deep understanding of
• hooks, context, and component lifecycle. Strong proficiency in Redux, Redux Toolkit (RTK), and RTK Query for state management and data fetching.
• Expert-level knowledge of modern web technologies: Micro Frontend (MFE) architecture (Module Federation, Single-SPA), advanced HTML5, semantic markup, and expert-level CSS3 (Flexbox, Grid, responsive design, CSS-in-JS like Styled Components, Emotion).
• Strong command of modern JavaScript/TypeScript (ES6+), frontend build tools (Webpack, Vite), and testing frameworks (Jest, React Testing Library, Cypress, Playwright).
• Proven expertise in performance optimization (code splitting, lazy loading) and practical application of design systems and component libraries (e.g., Storybook) for consistency and efficiency across frontend engineering.

Key Responsibilities

• You will design, develop, and maintain full stack applications using Java Spring Boot and React for our internal users and clients in Wealth Management.
• You will build and optimize RESTful APIs and microservices.
• You will implement and maintain Micro Frontend (MFE) architectures.
• You will drive best practices across the entire technology stack.
• You will collaborate with business analysts, project managers, business stakeholders, and other tech teams to integrate and deliver high-quality products.
• You will troubleshoot complex production issues spanning frontend and backend.
• You will drive technical innovation and continuous improvement initiatives. You will participate in system design discussions and contribute to the technical roadmap.

Pay: $7,800.00 - $8,800.00 per month

Benefits

• Health insurance

Work Location: In person