Senior Software Engineer

6 days ago

Sydney, New South Wales, Canada The Onset Full time A$170,000 - A$200,000 per year

Job Description

Senior Full Stack Engineer (Backend Focus - Java)

Hybrid – 50/50 split

Up to $170K+Super

We're looking for a senior engineer who's strongest on the backend but happy to dip into full stack when needed. You'll split your time between our customer engineering team and our platform team-jumping in where you can have the most impact.

This is the hiring manager's first role in this space, so it's a big one. You'll have the chance to set the tone for how we build, raise the bar on quality, and help shape the team culture as we grow.

Day-to-day, you'll be working on a Java-based SaaS platform that powers multiple customer products. You'll get stuck into building new features, fixing tricky performance issues, and making smart architecture decisions. If you're interested, there's a clear path here to Team Lead or Principal Engineer- but you can stay deep in the tech if that's your thing.

Why you might like this role

  • You'll work across both customer and platform engineering, so you'll always have interesting problems to solve.

  • You'll get to bring fresh ideas on how we build software and make them happen.

  • You'll work closely with other senior engineers, team leads, and product folks who actually value your input.

What you'll be doing

  • Taking ownership of projects from the idea stage right through to delivery and improvement.

  • Building, refactoring, and tuning systems in Java, Docker, Postgres (and sometimes React).

  • Figuring out whether something's a platform problem or a product bug - and fixing it the right way.

  • Helping other engineers level up through mentoring and knowledge sharing.

What we're looking for

  • Strong experience with Java-based SaaS platforms and backend work.

  • Solid architecture skills and the ability to spot problems before they blow up.

  • A track record of shipping real, complex projects.

  • Someone who naturally steps up to guide others and improve the way the team works.

Sound like a fit? Send your CV to or

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