Most PHP roles talk about building features.
n This one is about owning a system that already matters.
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Somewhere inside a large organisation, there's a platform quietly running the operations of thousands of properties. It schedules meetings, tracks work orders, and manages the flow of levy payments. It's not flashy, but it's critical - and it works at scale.
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Under the hood sits a 750,000+ line PHP monolith.
n Not something you rewrite. Something you understand, improve, and evolve carefully.
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This team isn't looking for someone to spin up landing pages or push out quick CRUD apps. They need engineers who:
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- See complexity and lean into it
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- Care about security, reliability, and long-term maintainability
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- Can navigate and improve a large, interconnected codebase without breaking what matters
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The stack is modern where it counts - PHP 8.3, MySQL 8 - with some legacy frontend in Knockout.js (helpful, but not the focus). The real work is in the backend: performance, structure, and making the system better piece by piece.
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There's also a forward-looking element.
The team is exploring how AI can be applied in meaningful, practical ways, so hands-on experience here isn't a "nice to have" - it's expected.
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They're bringing in 3 senior engineers on 12-month contracts to begin with. People who contribute, challenge ideas, and take pride in doing things properly.
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The process is simple: two conversations, focused on how you think and how you work.
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If you enjoy getting deep into real systems and leaving them better than you found them - it might be worth a conversation.
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Reach out to *****@theonset.com.au for more details.
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📌 Senior PHP Engineer - Own a Critical, Large-Scale System (New South Wales)
🏢 The Onset
📍 New South Wales
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