Sydney Startups Pay A$160K for Backend Engineers Who Get Poached in 6 Months — The Async Fix

You spent four months hiring her. She shipped one major feature.

Then Atlassian called and she was gone before the next sprint started.

Six months isn't a failure. It's the average.

You did everything right. The role was well-scoped. The salary was competitive. Onboarding was smooth. She liked the team.

None of that mattered when a company with ten times your headcount offered her A$30K more, a clearer promotion path, and stock in something that trades on the ASX.

Sydney's backend market doesn't reward loyalty. It rewards optionality. Engineers with strong backend experience know they can move every six to twelve months and come out ahead each time. The incentive to stay anywhere for long simply isn't there.

You're not losing people because your company is bad. You're losing them because the market is designed to move them.

The real cost of a six-month tenure

A$160K in salary. Plus super. Plus recruiter fees, equipment, onboarding time, and the three months of ramp-up before she was fully productive.

Call it A$200K all-in for six months of service. Out of which maybe three months produced real output.

That's roughly A$65K per month of useful backend work.

Now factor in what happens after she leaves. The remaining team absorbs her responsibilities. Velocity drops. Knowledge walks out the door. The hiring process restarts — another four months of sourcing, interviewing, and hoping the next person doesn't get the same call from the same kind of company.

The churn isn't just expensive. It compounds. Each departure makes the next one more likely, because the people who stay can see the pattern.

Why Sydney keeps producing this outcome

The city has a specific problem. Its biggest tech employers — Atlassian, Canva, the Big Four banks, a growing list of well-funded scale-ups — all need backend engineers and all have the budgets to pay top dollar.

That creates constant upward pressure on salaries and constant inbound recruiting for anyone with the right skills.

Two-year retention in this environment is a win. Eighteen months is normal. Six months happens more often than founders want to admit.

And notice periods in Australia are typically four weeks, which means the gap between "I'm leaving" and "I'm gone" is barely enough to hand off context, let alone document the decisions they made along the way.

You don't just lose the person. You lose everything they knew and didn't write down.

A model that doesn't depend on retention

Some Sydney startups have shifted their thinking. Instead of trying to keep backend engineers longer — a fight they keep losing — they've reduced how much depends on any one person staying.

The approach is straightforward. Work that requires ongoing ownership stays with the internal team. Work that can be fully described in a spec gets handed to async contractors.

The contractor builds from documentation. They never meet your team. They never join your Slack. They read the requirements, build the system, and deliver the code.

If your internal engineer leaves next month, the projects that were handled by contractors aren't affected. The specs still exist. The delivered code was reviewed and merged. The knowledge didn't walk out with anyone because it was written down before the work started.

It doesn't eliminate churn. But it makes churn survivable.

What needs to be true on your side

You need someone who writes real specs.

Not feature requests. Not user stories. Technical specifications that describe data models, API contracts, error handling, validation rules, and how the new system connects to everything around it. If a contractor can read the document and build the right thing without a single conversation, the spec is good enough.

That person might be a technical writer, a system analyst, or your most documentation-minded engineer. The role title is irrelevant. What matters is that someone produces documents a stranger can execute against.

You also need a review gate. When the code comes back, one engineer on your team reads it, tests it against the spec, and makes sure it fits your system's patterns. Takes a few hours. Skipping this step turns a reliable process into a coin flip.

And the work needs clear edges. Standalone services, integrations with documented APIs, data pipelines between known systems — these are ideal candidates. Anything that requires months of institutional context to build correctly should stay with your core team.

If six-month tenures are your new normal

Clean System Consulting builds backend systems from documentation, async, no meetings. The work doesn't depend on tenure because the knowledge lives in the spec, not in someone's head.

The contact page opens with a few questions about how your team is structured — documentation practices, project coordination, review capacity. Think of it as a compatibility check that runs in both directions. If the structure is there, the model works well. If it's not there yet, that's worth knowing before either side invests time.