The average time-to-hire for a senior software engineer at a growth-stage company is currently sitting around 94 days. For a principal or staff-level engineer, it stretches closer to five months. During that window, most companies run with the gap — distributing the workload across whoever is left and hoping the timeline compresses.
It rarely does. And the cost of that gap is almost always larger than companies realise.
The costs that show up on a spreadsheet
The direct costs are easy to quantify. A recruiter or agency retainer typically runs 20–30% of first-year salary. Background checks, job board credits, interviewing overhead — for a senior engineer role the direct spend before a single offer is made is often significant.
Then there's the offer rejection problem. Around 38% of accepted offers at the senior-to-principal level result in declined starts or early exits within the first six months, often because expectations weren't set correctly or the role had drifted between the first conversation and day one. Run that maths across a year of hiring and the recoverable cost climbs quickly.
The costs that don't show up anywhere
The harder calculation is what doesn't get built.
When a senior engineering role sits open for three months, the decisions that person would have made don't pause — they get made anyway, but by people operating outside their depth, or they get deferred until the situation is urgent. Deferred architecture decisions have a way of becoming expensive migrations twelve months later.
There's also the team carry cost. The engineers already on your payroll absorb the slack. This shows up as longer review cycles, reduced focus time, and the quiet attrition signal of engineers who stop raising problems because there's nobody available to solve them. Senior engineers in particular have limited appetite for sustained overload — they have options, and they use them.
What the search itself costs in attention
Every week a critical role is open is a week your engineering leadership is spending time on screening calls, debrief cycles, and offer negotiations. For a CTO or VP of Engineering, that's meaningful context switching away from the work that actually matters.
The irony is that companies most likely to move slowly on technical hiring — those without a dedicated recruiting function, or those where the hiring bar is set by a single senior person with no backup — are precisely the companies where leadership time is most constrained. The search becomes self-defeating.
The case for bridging, not waiting
The instinct to wait until the right permanent hire is available is understandable. What tends to go wrong is treating "waiting" as a neutral state. It isn't. Every sprint that passes without the decision-making capacity you need is a sprint where your team is running at reduced effectiveness.
A better framing: bridge the gap with senior external capacity while the search continues, and don't slow the search down just because the immediate pressure has eased. The two aren't mutually exclusive, and the work that gets done during the bridge period often clarifies exactly what the permanent hire actually needs to look like.
In several engagements, we've seen companies that thought they needed a staff engineer realise mid-engagement that what they actually needed was a fractional CTO to sort out process before they hired anyone. Getting that wrong in a permanent hire is an expensive correction.
How to move faster without lowering the bar
A few things consistently compress hiring timelines without compromising quality:
- Write the role brief for the person, not for compliance. Job descriptions that read like HR templates attract HR-optimised candidates. Write for someone who is good at the job and can tell the difference.
- Compress the process. Five interview rounds is not rigorous — it's slow. A two-stage process with a focused technical conversation and a session with the team they'll work with is usually enough for a high-quality signal.
- Make someone accountable for speed. Hiring timelines expand to fill the space available. Assign a single person responsible for keeping the process moving, with authority to unblock at each stage.
- Don't pause when you get close. The last 20% of a hiring process — offer to start — is where the most time is lost. Pre-negotiate terms early, move fast on references, and don't leave candidates in silence for weeks while approvals circulate.
None of this requires lowering your bar. It requires treating the cost of delay as seriously as you treat the cost of a bad hire.
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If you're running with an open senior engineering role and need senior capacity in the meantime, we can help bridge the gap while the search runs its course.