Java Developer - Contract

United States Digital Space LLC; Singapore; On-site; SGD 70,000 - 120,000; Full time

Job summary

United States Digital Space LLC in Singapore seeks an experienced Java Backend Developer to design, develop and enhance backend applications and financial platforms, focusing on Java, Spring Boot and scalable enterprise solutions.

You will collaborate with cross-functional teams to deliver secure, high-performance systems supporting critical business functions, participate in full SDLC, ensure code quality, and contribute to CI/CD improvements.

Qualifications

• Strong experience in Java backend development, including core Java concepts and libraries.
• Experience with Spring Framework/Spring Boot and data access (JPA/Hibernate).
• Familiarity with messaging frameworks (JMS preferred) and CI/CD practices.
• Proven ability to develop enterprise applications and integrate complex systems.
• Comfortable in Unix/Linux environments and agile teams.

Responsibilities

• Design, develop and maintain backend services and APIs using Java, Spring and Spring Boot.
• Build scalable, reliable financial applications with performance and security in mind.
• Integrate backend systems with internal platforms and external services.
• Participate in the full software development lifecycle: design, develop, test, deploy, support.
• Write clean, efficient code and follow engineering best practices.
• Conduct code reviews and improve development standards and CI/CD processes.
• Troubleshoot issues across development and production environments.
• Collaborate with product owners and stakeholders to translate requirements.
• Support application releases and post-production changes.

Skills

Java backend

Core Java

Spring Boot

JPA/Hibernate

JMS

CI/CD

Unix/Linux

Agile

Job description

We are seeking an experienced Java Backend Developer to join a technology team within a leading financial services organisation. The successful candidate will be responsible for designing, developing and enhancing backend applications and financial platforms, with a strong focus on Java, Spring Boot and scalable enterprise solutions. You will work closely with cross-functional teams to deliver secure, high-performance systems supporting critical business functions.

Key Responsibilities

• Design, develop and maintain backend services and APIs using Java, Spring and Spring Boot.
• Build scalable and reliable financial applications while ensuring performance, security and maintainability.
• Integrate backend systems with internal platforms and external services to support efficient data flows.
• Participate in the full software development lifecycle, including design, development, testing, deployment and production support.
• Write clean, efficient and maintainable code following engineering best practices.
• Conduct code reviews and contribute to improving development standards and CI/CD processes.
• Troubleshoot and resolve technical issues across development and production environments.
• Collaborate with product owners, business stakeholders and engineering teams to translate requirements into technical solutions.
• Support application releases, change management activities and post-production implementation.

Required Skills & Experience

• Strong hands-on experience in Java backend development.
• Good knowledge of Core Java, including collections, concurrency, JSON, JDBC and related libraries.
• Experience with Spring Framework, Spring Boot, JPA/Hibernate, JDBC templates and messaging frameworks (JMS preferred).
• Experience developing enterprise applications and integrating complex systems.
• Understanding of software engineering best practices, including testing, code review and CI/CD processes.
• Basic knowledge of Unix/Linux environments and scripting.
• Strong analytical and problem-solving skills with the ability to work independently.
• Comfortable working in an Agile development environment with global teams.

Preferred Experience

• Experience working within financial services, banking or capital markets technology.
• Exposure to high-volume transaction systems or enterprise platforms.
• Strong communication skills with the ability to collaborate across technical and business teams.