Sydney Backend Engineers Are Expensive and Being Poached by the Big Four Banks — What Startups Do Instead

Your best backend engineer just got an offer from CommBank. You can't match it.

You already know how this ends.

The four employers you can't outbid

Commonwealth Bank, Westpac, NAB, ANZ. Between them they employ thousands of software engineers across Sydney, and they've spent the last several years aggressively modernizing their platforms.

That modernization runs on backend talent.

The Big Four don't just hire — they vacuum. They offer salaries north of A$180K for senior backend roles, plus superannuation, annual bonuses, and the kind of job security that a startup can never promise. When your engineer gets that call, your equity pitch suddenly sounds like a gamble.

And it's not just the banks. Atlassian, Canva, and a wave of well-funded scale-ups are all fishing in the same pond.

Your startup is competing for talent against institutions with essentially unlimited engineering budgets.

The cost of losing people you already trained

Replacing an engineer is expensive everywhere. In Sydney it's particularly painful because the replacement cycle takes so long.

The market is competitive enough that a backend hire can take eight to twelve weeks. During that time, your remaining engineers absorb the extra load. Productivity drops. Morale follows.

Then the new person arrives and needs months to understand your system. The context the last engineer carried — the architectural decisions, the undocumented edge cases, the reasons behind the weird workaround in the payment service — all of that walked out the door.

You're not just paying to replace a person. You're paying to reconstruct knowledge that took a year to build.

And there's no guarantee the replacement won't get the same call from the same bank twelve months from now.

Why Sydney's market is built this way

Australia's tech talent pool is smaller than it looks from the outside.

Sydney is the country's tech capital, but the absolute number of experienced backend engineers is modest compared to cities like London or New York. Immigration has helped, but visa processing times and sponsorship costs add friction that big employers absorb more easily than startups.

The Big Four banks have another advantage: stability. In an uncertain economy, a permanent role at a major bank with predictable bonuses and strong super contributions is genuinely appealing. Startup equity can't compete with that kind of certainty.

This isn't a cycle that's about to correct. The banks are investing more in technology, not less. Their demand for backend engineers is structural.

What some Sydney startups figured out

A handful of founders stopped treating every backend project as a headcount problem.

They looked at the work sitting in their backlog and made a distinction. Some of it required an engineer who lives inside the system — someone who understands the full context, makes architectural calls, and evolves the platform over time. That's a hire worth fighting for.

But a lot of it didn't. A new integration with a payment provider. A data pipeline between two systems with documented schemas. A standalone service with clear inputs, outputs, and error handling.

That kind of work doesn't need institutional memory. It needs a good spec.

So they wrote the spec and handed it to async contractors who build from documentation. No onboarding. No standups. No retention risk. The contractor reads the requirements, builds the system, and delivers the code. The internal team reviews it and integrates it.

The projects that were blocked on hiring are suddenly unblocked. And the engineers who stayed aren't burning out from carrying extra load.

How to evaluate this for your own team

Start with your documentation.

Can you describe the project in a technical spec that stands alone? Not a product brief. Not a Confluence page with screenshots and aspirational language. A real spec — endpoints, data models, validation logic, failure modes, integration contracts.

If that document exists or someone on your team can produce it, async contracting works.

Next — can someone review the output? You need one engineer who can read the delivered code, run it against the spec, and know whether it's right. This is a few hours of work per project, not a management burden.

Finally, check the boundaries. The cleanest handoffs are projects that don't require touching ten other services to build. A new service with a defined API contract? Ideal. A refactor that spans your entire monolith? Keep that in-house.

If you're losing engineers faster than you can hire them

Clean System Consulting builds backend systems async, from documentation. No interviews to run, no offers to match, no notice periods to wait out.

There's a questionnaire on the contact page that gets into how your team operates day to day — who produces specs, who coordinates work, who handles code review. It's a fast read on whether the way you work maps to the way async delivery works. Better to surface a mismatch in five minutes than in five weeks.