Software developer（Backend/Frontend）

Private Advertiser; Singapore; On-site; SGD 120,000 - 180,000; Full time

Job summary

Private Advertiser in Singapore is seeking a skilled full-stack developer to design, build, and maintain enterprise applications using Java Spring Boot and React for internal users and Wealth Management clients. You will implement RESTful APIs, microservices, and Micro Frontend architectures, collaborating with business analysts, managers, and tech teams to deliver high-quality products.

You will troubleshoot production issues spanning frontend and backend and drive continuous improvement

Qualifications

• Strong proficiency in Java 17+ with expert Spring Boot knowledge.
• Expert in React with TypeScript and modern frontend patterns.
• Experience with microservices, REST APIs, and database optimization.

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 and collaborate with stakeholders.
• Troubleshoot complex production issues across frontend and backend.
• Drive technical innovation and contribute to the architecture roadmap.

Skills

Java

Spring Boot

React

RESTful APIs

Microservices

TypeScript

Redux RTK

Module Federation

Single-SPA

HTML/CSS

Webpack/Vite

Testing (JUnit/Mockito)

Kafka

SQL/Databases

Performance optimization

Storybook

Cypress/Playwright

Tools

MariaDB/PostgreSQL

Kafka/IBM MQ

JUnit/Mockito/Karate

Storybook

Jest/RTL/Cypress/Playwright

Webpack/Vite

Job description

About the role

Design, develop, and maintain full stack applications using Java Spring Boot and React for internal users and clients in Wealth Management.

Key responsibilities

• Build and optimize RESTful APIs and microservices

• Implement and maintain Micro Frontend (MFE) architectures

• Collaborate with business analysts, project managers, business stakeholders, and other tech teams to integrate and deliver high-quality products

• Troubleshoot complex production issues spanning frontend and backend

• Drive technical innovation and continuous improvement initiatives

• Participate in system design discussions and contribute to the technical roadmap

About you

• Strong proficiency in Java (Java 17+) with deep understanding of core concepts and expert-level Spring Boot framework knowledge (MVC, Data, Security, Cloud)

• Strong understanding of modulith/microservices patterns and best practices

• 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 strong understanding of design patterns and SOLID principles

• Expert-level TypeScript React 19 (or older version) experience with 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)