Most PHP roles talk about building features.
This one is about owning a system that already matters .

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.

Under the hood sits a 750,000+ line PHP monolith .
Not something you rewrite. Something you understand, improve, and evolve carefully .

This team isn’t looking for someone to spin up landing pages or push out quick CRUD apps. They need engineers who:

- See complexity and lean into it
- Care about security, reliability, and long-term maintainability
- Can navigate and improve a large, interconnected codebase without breaking what matters

The stack is modern where it counts - PHP 8.3, MySQL 8 - with some legacy frontend in Knockout.js (practical, but not the focus).



The real work is in the backend: performance, structure, and making the system better piece by piece.

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.

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.

The process is simple: two conversations, focused on how you think and how you work.

If you enjoy getting deep into real systems and leaving them better than you found them - it might be worth a conversation.

Reach out to *****@theonset.com.au for more details.

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📌 PHP Engineer (City of Sydney)
🏢 The Onset
📍 City of Sydney