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Senior Java Engineer

The Onset
Sydney, NSW
A$170,000-$195,000 p/a
Information & Communication Technology → Engineering - Software
Full-time
On-site

Posted 12 days ago


Senior Java Engineer – Build Scalable Systems & Shape the Future of AI
📍 Sydney | 💰 $175K - $195K + Super + Bonus
🔄 Hybrid (3 days in office)

Are you an exceptional Senior - Staff level Java engineer who thrives in scalable system design and loves the challenge of AI-driven projects?

Join a company where engineering excellence, modern tech, and financial stability create the perfect environment for you to take ownership and influence best practices—without needing to manage people.

Why You’ll Love This Role

  • Build at Scale – Tackle complex engineering problems as we scale our systems and integrate AI-driven initiatives.

  • End-to-End Ownership – Drive features from idea to production, ensuring performance, security, and reliability.

  • High-Performing Team – Work alongside top engineers from some of the best tech companies, in an environment that values technical mastery and innovation.

  • Hybrid Work Model – Enjoy flexibility with 3 days in-office, fostering collaboration while keeping work-life balance.

  • Long-Term Stability & Growth – Join a company where people stay for years (some over 20!) because of the strong culture, leadership, and career progression.

What You’ll Be Doing

  • Design & build scalable, resilient back-end services using Java, and Spring Boot.

  • Enhance platform reliability with Kubernetes and cloud-native technologies (AWS/GCP).

  • Collaborate on AI-powered projects, applying innovative solutions to real-world challenges.

  • Influence best practices & architectural decisions across engineering teams.

  • Work across the stack when needed (occasional front-end work, but backend is the focus).

What You’ll Bring
✅ 8+ years of Java/Kotlin development experience (backend or full stack).
✅ Strong knowledge of Spring Boot, microservices, and scalable architectures.
✅ Hands-on experience with AWS or GCP and Kubernetes.
✅ Passion for high-quality code, performance, and engineering best practices.
✅ Ability to drive technical improvements and mentor engineers without formal management.

Why Now?
The company is scaling fast, working on cutting-edge AI projects, and doubling down on engineering excellence. If you’re looking for a role where you can make an impact, work with top engineers, and grow your career, this is it.

🔹 Apply now and be part of a team where innovation meets stability!


About The Onset

Sydney, NSW, Australia

This company does not have any further information provided at this time. We encourage you to research the company by searching for them to learn more about the company or role in question before applying.

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