Top Java Developer Jobs in Melbourne

Designs and maintains automated testing frameworks for margin trading and risk systems using Java and/or Rust. Responsibilities include test planning, environment management, black-box and white-box testing, security and performance testing, defect analysis, and validation of complex trading workflows, margin calculations, liquidation processes, and high-concurrency distributed systems.

Design, build, and operate Java backend services, REST APIs, compliance capabilities, and analytics products. Develop blockchain data pipelines, model relational and NoSQL data, optimize queries, and improve production reliability, observability, and performance. Translate regulatory requirements into technical solutions while collaborating with compliance and product specialists. The role may also involve AWS infrastructure, Kafka, crypto integrations, and AI-assisted development tools.

Owns end-to-end developer tooling and infrastructure solutions for large-scale engineering teams. Builds self-service platforms, CLIs, automation, CI/CD systems, build and test infrastructure, release tooling, monitoring, and developer workflows for Python and Java engineers. Partners with backend, platform, and infrastructure teams, uses telemetry to prioritize improvements, and contributes through documentation, technical talks, and mentorship.

Build scalable backend frameworks, shared services, APIs, and internal platforms for Canva’s Product Platform. Design maintainable distributed systems, collaborate with product teams, improve observability and deployment workflows, establish engineering standards, and mentor engineers. The role requires strong Java or JVM expertise, cloud experience, API and modular architecture knowledge, and the ability to reason about scalability and complexity.

Design, develop, and maintain high-performance backend systems for a Web3 Wallet DEX. Apply blockchain technology, contribute to technical architecture, improve system reliability and scalability, and introduce innovative solutions. The role requires Java development, distributed systems expertise, MySQL performance tuning, and collaboration in a fast-paced team.

Develop and compile custom Minecraft: Java Edition mods (blocks, items, mobs, UI, commands, crafting, AI) from scripts and storyboards. Implement unique gameplay mechanics, integrate with set design and modelers, troubleshoot and debug code, and ensure mods appeal to a young audience while meeting deadlines and feedback.

Design, develop, and maintain high-performance, secure Java backend services and APIs. Ensure reliability, scalability, and cost-efficiency across microservices, databases, messaging systems, and capacity planning. Troubleshoot, profile, benchmark, and optimize systems (including ML applications) and collaborate with Kazakhstan stakeholders.

Design and implement complex backend services for Binance Square. Collaborate with product, DevOps, and QA to deliver high-quality microservices, promote engineering best practices, and perform code reviews.

Administer, monitor, and support Java applications and Genesys Cloud. Provide production troubleshooting, minor bug fixes and enhancements, and act as primary POC for Java apps. Develop/support microservices using Java and Spring Boot, perform analysis of system behavior, and apply problem-solving and diagnostics to maintain service quality.

Design, implement, test, and deploy Java-based product applications. Collaborate with business analysts and customers to clarify requirements, write unit tests and deployment scripts, perform release testing, document solutions, assist with client issues, and mentor teammates while using modern containerized development toolchains.

Design, implement, and maintain backend systems for a centralized exchange (CEX). Lead architecture and development of payment systems, trading matching engines, real-time compute and middleware platforms. Drive technical reviews, troubleshooting, refactoring, and mentoring to ensure system stability, performance, and engineering standards.

Develop and maintain Java backend services for enterprise blockchain applications, integrate APIs with React/Vue frontends, design scalable blockchain solutions, troubleshoot complex backend issues, and collaborate with cross-functional teams while staying current with blockchain best practices.

Optimize and scale blockchain node performance, design and implement core system plugins, collaborate with cross-functional teams, perform performance testing and debugging, and stay current with blockchain infrastructure trends.