Job Description
Senior Full Stack Engineer - Scale-Up
đź“Ť Sydney (Hybrid: 2 days in office)
đź’° Up to $200K + Super + Shares
Are you a hands-on engineer who thrives in fast-moving environments and enjoys juggling multiple projects at once? This is your chance to join a growing scale-up with consistent revenue growth, where you’ll take ownership of projects end-to-end and have a direct impact on product direction.
As a Senior Engineer, you’ll be part of a collaborative, flat-structured team where everyone rolls up their sleeves to make things happen. You’ll work across product development, data engineering, and deployment - switching between priorities as business needs evolve-so curiosity, adaptability, and problem-solving matter more than any one framework or language.
Why join?
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Tackle diverse challenges: Work on 3-4 projects at a time, spanning new product features, infrastructure improvements, and data pipelines that drive better decision-making.
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Shape a high-growth product: With demand accelerating, you’ll be building at pace and constantly adapting to evolving business conditions.
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Own your work end-to-end: From design through to delivery, you’ll have the autonomy to build solutions that create real impact.
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Bring your polyglot mindset: We value engineers who are language-agnostic, excited to learn, and motivated to pick the right tool for the problem.
You’ll thrive in this role if you:
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Have 8+ years’ experience in software engineering, with strong backend foundations but openness to working across the full stack.
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Enjoy variety and are energised by working on multiple projects at once.
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Value open communication, collaboration, and knowledge sharing.
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Take a proactive, solutions-first approach to complex technical challenges.
This is a role for engineers who see themselves as builders and problem-solvers first, tech stack specialists second - a chance to shape both the product and the future of the company.
Sounds like your next role? Reach out to Monica@theonset.com.au