Senior Java Engineer - Scalable Backend for FinServ

Hydrogen Group; Sydney; On-site; AUD 120,000 - 170,000; Full time

Job summary

Hydrogen Group in Sydney is seeking an experienced Java Developer to design, build, and support enterprise-grade applications in a fast-paced financial services environment.

You will collaborate with cross-functional teams to deliver secure, scalable backend services and RESTful APIs using Java 11+, Spring Boot, and modern CI/CD pipelines. This role emphasizes reliability, security, and performance in cloud-enabled deployments.

Qualifications

• 5+ years of commercial software development experience.
• Strong experience developing applications in Java (Java 11 or above).
• Exposure to Kotlin development.
• Experience building RESTful APIs and microservices.
• Strong understanding of object-oriented design principles and software engineering best practices.
• Experience with Spring Boot and the wider Spring ecosystem.
• Knowledge of relational databases such as PostgreSQL, Oracle, or SQL Server.
• Experience using Git and modern CI/CD pipelines.
• Familiarity with automated testing frameworks including JUnit and Mockito.
• Understanding of secure coding practices and application performance optimisation.
• Excellent problem-solving, analytical, and communication skills.

Responsibilities

• Design, develop, test, and maintain enterprise-grade Java applications.
• Build scalable, secure, and resilient backend services and APIs.
• Collaborate with Product Owners, Business Analysts, Architects, QA Engineers, and DevOps teams to deliver high-quality software.
• Participate in system design, technical planning, and architectural discussions.
• Write clean, maintainable, and well-tested code following engineering best practices.
• Troubleshoot production issues and implement effective solutions.
• Contribute to continuous improvement of development processes, tooling, and engineering standards.
• Ensure applications comply with security, regulatory, and compliance requirements relevant to financial services.
• Support CI/CD pipelines and cloud-based deployment practices.

Skills

Java development

Kotlin development

REST APIs

Microservices

Spring Boot

Relational databases

PostgreSQL

Oracle

SQL Server

Git

CI/CD

JUnit

Mockito

Secure coding

Performance optimization

Problem solving

Communication

Tools

Docker

Kubernetes

Terraform

Job description

Hydrogen Group in Sydney is seeking an experienced Java Developer to design, build, and support enterprise-grade applications in a fast-paced financial services environment.

You will collaborate with cross-functional teams to deliver secure, scalable backend services and RESTful APIs using Java 11+, Spring Boot, and modern CI/CD pipelines. This role emphasizes reliability, security, and performance in cloud-enabled deployments.