A blueprint for adding engineering capacity quickly when the constraint is not budget but the time it takes to find, verify and productively onboard senior people.
This is a blueprint, not a client case study. The situation described is a composite of the conditions we design for, not a named engagement. Targets below are measures we would baseline and report against — not results already achieved.
A product company closed a funding round with a roadmap that assumes three squads. It has one, of six engineers. The board expects the roadmap; the engineering lead knows that adding twelve people badly will slow the team down before it speeds it up.
Internal recruiting has produced four hires in five months, two of which did not pass probation. Each agency engagement has meant screening eight to twelve CVs per role, mostly keyword matches against a job description that was itself copied from a previous one.
The deeper problem is that the existing six are the only people who understand the system, and every new hire consumes their time. Scaling by hiring alone converts the team's most productive engineers into full-time onboarders.
Six engineers can absorb only so many newcomers at once before delivery stops. The ramp has to be staged and structured, not opportunistic.
There is no capacity for mentoring junior engineers. Everyone joining needs to be productive with limited direction.
The team will resist new hires unless screening is visibly more rigorous than what produced the last two.
Delivery commitments continue through the scaling period.
Squad leads need substantial overlap with the existing team; focused implementation work does not.
The shape of the solution, before any of the detail below.
From brief to productive contribution
These are the calls that determine whether the engagement works — most of them made before any build starts.
Most bad shortlists trace to a job description that was never examined. We run a calibration session separating what the role genuinely requires from what it inherited, benchmark the rate against the market for that skill and location, and say plainly where a brief is unfillable at the stated rate. That conversation up front saves months.
Every candidate has a structured technical conversation with an engineer experienced in that stack before the client sees them. The output is a written assessment citing specific evidence — what they built, what trade-offs they made, where they were vague — and an explicit recommend or do-not-recommend.
Around three candidates per role, with our recommendation and our concerns. If we cannot find the right people, we say so rather than padding the list. A four-CV shortlist where two are filler costs the hiring manager more time than it saves.
People arrive in waves sized to what the existing team can absorb. Each wave is fully productive before the next begins, and wave-one joiners onboard wave two — which both protects the original six and tests whether wave one genuinely understands the system.
Access and environment provisioned before day one. A defined first-week task that produces a real merged change. A named buddy from the existing team. A first independent feature within three weeks. Ramp is measured, and a joiner who is off-track at day fourteen is addressed then rather than at probation.
Roles needed for a defined roadmap phase run as contract. Roles that are structurally permanent go to direct hire or contract-to-hire with conversion terms agreed up front. Getting this split right avoids both a bench and a revolving door.
Durations are indicative for an engagement of this shape. Yours would be sized during assessment.
Establish what the roles genuinely require, benchmark the market, and sequence the intake against onboarding capacity.
Activities
Targeted sourcing followed by engineer-led technical assessment, producing short shortlists with written evidence.
Activities
First wave joins into a structured twenty-one-day ramp, with progress measured rather than assumed.
Activities
Subsequent waves onboarded primarily by wave-one joiners, protecting the original team's delivery capacity.
Activities
Structured check-ins through the first ninety days, with conversion decisions taken on evidence.
Activities
Every one of these is baselined before work starts, so the comparison at the end is defensible rather than flattering.
| Measure | Target | How it's measured |
|---|---|---|
| Submittal-to-interview ratio | Most candidates sent are worth interviewingCandidates interviewed divided by candidates submitted, tracked per role — the direct measure of whether screening protects client time. | Candidates interviewed divided by candidates submitted, tracked per role — the direct measure of whether screening protects client time. |
| Time to first merged change | Within week oneDays from start date to a merged pull request, measured per joiner as the first ramp signal. | Days from start date to a merged pull request, measured per joiner as the first ramp signal. |
| Time to independent contribution | Within 21 daysDays to completing a feature without pairing support, checked at day 14 so intervention is possible. | Days to completing a feature without pairing support, checked at day 14 so intervention is possible. |
| Squad velocity through the ramp | No sustained drop in the original team's outputDelivery throughput tracked per squad across each wave, so onboarding cost is visible rather than assumed. | Delivery throughput tracked per squad across each wave, so onboarding cost is visible rather than assumed. |
| Retention at 6 and 12 months | Tracked and reported honestly, including missesPlacement retention reviewed per cohort — the measure that actually reflects screening quality. | Placement retention reviewed per cohort — the measure that actually reflects screening quality. |
Named up front. A risk register written after something goes wrong is just a post-mortem.
Wave sizing is derived from the existing team's stated capacity, and each wave must reach productivity before the next starts.
Market benchmarking happens during calibration, and we say so before sourcing rather than after six weeks of near-misses.
Written technical assessments are shared with the hiring manager, and existing engineers participate in final interviews so screening rigour is visible.
Notice periods and replacement cover are contractual, and knowledge sharing within squads is a working practice rather than a handover event.
It never does. Tell us where yours differs and we'll tell you honestly whether we're the right people for it.
Or email us directly at reachus@segakiv.com