A Series B engineering hiring plan starts with the org chart you need in 12 months and works backward to today. Sequence leadership before ICs, blockers before dependents, and scarce roles before common ones. Budget for recruiter capacity that matches the plan, not the current run rate. Set monthly milestones on quality metrics, not just headcount. The companies that hit their numbers planned the sequence; the ones that did not planned only the total.
Series B is where engineering hiring shifts from opportunistic to systematic. The plan you build now determines whether you hit the roadmap or spend the year backfilling mis-hires.
This guide covers how to build the plan: the roles, the sequence, the budget for recruiter capacity, and the milestones that tell you whether the plan is working before it is too late to fix.
Start With the Org Chart, Not the Headcount
A headcount target is not a hiring plan. Fifty engineers could mean ten backend, five AI, three leadership, and thirty-two mid-level across four teams, each with different timelines, dependencies, and difficulty. Map the org chart you need in 12 months by team, level, and role type. Then work backward to identify the hiring sequence.
Sequencing: What to Hire First
- Leadership first. A VP Engineering or team lead sets the bar and makes every subsequent hire better. Hiring ICs before leadership means the bar drifts.
- Blockers before dependents. If team B cannot start until team A has an architect, the architect is the blocker. Sequence them accordingly.
- Scarce before common. AI engineers, security engineers, and platform engineers take longer to find. Start those searches early.
- First cohort matters most. The first five hires in any team set the culture and the standard. Weight quality over speed on the first cohort.
The VP Engineering search playbook covers the leadership hire in depth. The embedded hiring scope for 50 engineers covers the capacity model.
Recruiter Capacity Budget
Match recruiter capacity to the plan, not the current quarter. If the plan calls for 40 hires in 12 months, you need two to three dedicated recruiters working throughout the year, either in-house or via an embedded RPO engagement. Trying to hire 40 engineers with one recruiter and intermittent agency support produces a plan that misses by month six.
| Annual hires | Dedicated recruiters needed | Model |
|---|---|---|
| 10 to 15 | 1 | In-house or RPO |
| 15 to 30 | 2 | RPO or in-house + agency |
| 30 to 50 | 3 to 4 | RPO team |
| 50+ | 4+ | RPO team + agency for specialist roles |
Monthly Milestones
Track quality alongside quantity every month:
- Hires made vs plan (by team, not just total).
- Offer acceptance rate (below 65% = offer or process problem).
- Time to fill by role type (senior roles trending above 14 weeks = sourcing problem).
- 90-day retention of new hires (below 85% = assessment or onboarding problem).
The hiring metrics for engineering leaders covers the full measurement framework.
The Plan on One Page
| Quarter | Focus | Key hires | Milestone |
|---|---|---|---|
| Q1 | Leadership + first cohort | VP Eng / leads, first senior ICs | Leadership in seat, first team shipping |
| Q2 | Core teams | Mid and senior ICs across primary teams | All primary teams staffed to minimum viable |
| Q3 | Scale + specialist | Specialist roles (AI, security, platform) | Specialist coverage complete |
| Q4 | Fill + bench | Remaining ICs, second cohort, bench depth | Full org chart, 90-day retention above 85% |
