Full Stack Engineer - Java/React

Ascendion; Singapore; On-site; SGD 90,000 - 130,000; Full time

Job summary

Ascendion in Singapore is seeking a full-stack engineer with strong hands-on experience across Java/Spring Boot and React.js to contribute across the complete application flow.

You will design and build backend services, REST APIs, and micro frontends, while working with Oracle, PostgreSQL or MySQL in an Agile environment. The role emphasizes clean, testable code and collaboration with cross-functional teams.

Qualifications

• Minimum 5 years of software development experience.
• Hands-on Java development experience.
• Experience with Spring Boot and React.js.
• Experience designing REST APIs and microservices.
• Strong SQL knowledge and experience with relational databases.

Responsibilities

• Build and enhance backend services using Java and Spring Boot.
• Design and develop REST APIs and microservices.
• Build and integrate micro frontend applications.
• Work with relational databases such as Oracle, PostgreSQL or MySQL.
• Troubleshoot issues across frontend, API, backend and database layers.
• Write clean, maintainable and testable code.
• Participate in code reviews and contribute to engineering standards.
• Collaborate with developers, QA, architects and business stakeholders.
• Work within an Agile delivery environment.

Skills

Java

Spring Boot

React.js

REST APIs

Microservices

SQL

Relational databases

Git

Agile

Tools

Oracle

PostgreSQL

MySQL

Job description

• We’re hiring a full-stack engineer with strong hands‑on experience across Java/Spring Boot and React.js.
• You’ll contribute across the complete application flow, from React micro‑frontends and REST APIs to Spring Boot microservices and relational databases.

Responsibilities

• Build and enhance backend services using Java and Spring Boot.
• Design and develop REST APIs and microservices.
• Build and integrate micro frontend applications.
• Work with relational databases such as Oracle, PostgreSQL or MySQL.
• Troubleshoot issues across frontend, API, backend and database layers.
• Write clean, maintainable and testable code.
• Participate in code reviews and contribute to engineering standards.
• Collaborate with developers, QA, architects and business stakeholders.
• Work within an Agile delivery environment.

Required Skills

• 5 years of software development experience.
• Strong recent hands‑on experience with Java.
• Practical experience with Spring Boot.
• Experience developing REST APIs and microservices.
• Strong hands‑on development experience with React.js.
• Experience developing or integrating micro frontends.
• Good working knowledge of SQL and relational databases.
• Familiarity with Git and standard software engineering practices.