Hiring costs scale dramatically with seniority. Junior engineers cost 5-10x less to recruit than staff engineers. Here is a complete breakdown of every cost component, by experience level.
Larger candidate pool keeps costs low. Onboarding ramp of 6-8 weeks is the biggest hidden cost. Hire in cohorts to reduce per-head spend. Strong mentorship is essential for first-year retention.
The highest-volume engineering hire. Referral programs are most effective at this level. Structured interviews reduce wasted time by 30%. Mid-levels have the best ROI when onboarding is structured.
Agency dependency is high. Employer brand investment shows the clearest ROI — each direct senior hire saves $20,000+ in fees. Expect 6-8 interview rounds and 25-40% counter-offer rates.
Retained search firms dominate at this level. Expect 90-day processes and complex equity negotiations. Internal promotion programs are 3-5x cheaper with significantly lower first-year attrition.
Includes vacancy cost at 65 days, failed hire risk, and typical agency fees.
| Level | Vacancy Cost (65 days) | Failed Hire Cost | Agency Fee (midpoint) | Referral Bonus |
|---|---|---|---|---|
| Junior | $19,500 | $25,000 | $11,700 | $2,000–$4,000 |
| Mid-Level | $33,800 | $42,000 | $23,625 | $3,000–$6,000 |
| Senior | $42,900 | $57,750 | $34,650 | $5,000–$10,000 |
| Staff | $77,400 | $82,500 | $57,750 | $8,000–$15,000 |
Vacancy cost = salary divided by 250 working days multiplied by 65 days. Failed hire = 30% of mid-range salary.