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Senior software engineer

Sydney
The Onset
Software Engineer
Posted: 4 February
Offer description

Job Description



Senior Backend Engineer | Tech That Actually Does Good


Some companies just ship features.
Others ship stress.
This team ships meaningful tech - for customers, for their people, and for the planet.

They're the only Australian tech company in their space with B Corp certification, proving that high performance and high standards (ethical, environmental, and human) can coexist.

You'll join a seriously strong engineering group - people from Google and other global tech names - building systems that millions rely on every day, even if they don't realise it. The environment is high-impact but low-ego: thoughtful engineering, real collaboration, and work that stands for something.


What You'll Be Doing

* Designing and building backend systems that handle real complexity - cleanly and at scale

* Raising the bar for engineering quality through thoughtful reviews and technical leadership

* Working closely with product, design, and data to deliver features that have genuine user impact

* Contributing to architectural decisions across a modern, evolving platform

* Helping shape engineering culture where autonomy, trust, and craft matter more than red tape


What You Bring

* Strong backend experience with Python (Django, Flask, or FastAPI)

* Solid cloud knowledge (AWS or Azure) and experience with CI/CD pipelines

* Experience building scalable, resilient systems in production

* Familiarity with microservices, event-driven architecture, and distributed systems

* A track record of mentoring or supporting other engineers

* A mindset that values simplicity, clarity, and long-term quality over quick hacks


Why This Role Stands Out


Because this is a place where:

* Engineers care about the impact of what they build

* Quality isn't sacrificed for speed

* Ethics and innovation aren't seen as trade-offs

* You can do some of the best technical work of your career - without burning out

If you're looking for a role that stretches your technical thinking and aligns with your values, this is worth a conversation.

Apply now or reach out directly to to start a chat.

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