Senior Java Integration Engineer

1 week ago

Sydney, New South Wales, Australia The Onset Full time

Join to apply for the Senior Java Integration Engineer role at The Onset

1 day ago Be among the first 25 applicants

Join to apply for the Senior Java Integration Engineer role at The Onset

  • Daily Rate: up to $1,050 including super
  • Initial 6-12 months (potential to extend)
  • 3 days in office - Sydney CBD

Job Description
  • Multiple contract opportunities
  • Daily Rate: up to $1,050 including super
  • Initial 6-12 months (potential to extend)
  • 3 days in office - Sydney CBD

Join a fast-growing tech business where integration isn't just plumbing — it's a core part of the product. With millions of users, a high-performing engineering team, and a platform built for scale, this is a place where your code shapes how people interact with technology every day.

Backed by decades of success and operating in 30+ global markets, this company combines the speed of a product-led business with the security of a globally trusted brand.

They're looking for Senior Integration Engineers to help power seamless, intelligent customer journeys through scalable APIs, resilient messaging systems, and event-driven architecture.
  • Design, build, and evolve robust RESTful APIs used by customer-facing and internal platforms
  • Lead the technical implementation of integration layers that sit at the heart of multiple product ecosystems
  • Use technologies like Spring Boot, Apache Camel, Kafka, PubSub, and more
  • Ensure observability, security, and performance are built into every layer of your work
  • Collaborate across engineering, product, and platform teams to deliver scalable, real-time connectivity
  • Contribute to architecture discussions, code reviews, and continuous improvement
  • Deep experience in Java 8+ and Spring Boot 3+
  • Proven ability to design and implement REST APIs and enterprise-grade integrations
  • Strong knowledge of EIP (Enterprise Integration Patterns)
  • Experience with integration frameworks (Apache Camel, Spring Integration)
  • Messaging experience: JMS, Kafka, Solace, or GCP PubSub
  • Familiarity with CI/CD tooling and automated testing
  • Bonus: Hands-on with observability stacks like Splunk, SumoLogic, AppDynamics, Dynatrace
  • Join a high-performing, tech-focused culture that values quality and autonomy
  • Solve real engineering challenges at scale with modern tooling
  • Collaborate with some of the brightest engineers in the region, with a mix of product, start-up, and big-tech backgrounds
  • Work with a leadership team that genuinely backs innovation, learning, and career growth

If you're a Senior Integration Engineer who's excited to build future-proof systems in a product-driven environment — this is your opportunity to make a real impact.

Apply now or reach out for a confidential chat with Monica OmthaSeniority level
  • Seniority levelNot Applicable
Employment type
  • Employment typeContract
Job function
  • Job functionEngineering and Information Technology
  • IndustriesStaffing and Recruiting

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