Engineering Onboarding Cost Calculator
Calculate the true cost of onboarding a software engineer - recruiting fees, equipment, training, senior mentor time, and the 3-6 month productivity ramp. It's more than you think.
Typical Cost Breakdown - Engineer at $130k/yr
| External recruiter fee | $16k - $26k | 15-20% of $130k salary |
| Equipment & software | $3k - $8k | MacBook Pro, licences, peripherals |
| Training & HR admin | $2k - $5k | Compliance training, HR overhead |
| Senior mentor time | $8k - $15k | 20-30% of senior's time, 3 months |
| Productivity ramp loss | $25k - $65k | 6-month ramp to full productivity |
Hire Details
Ramp time: ~6 months to full productivity
Base salary (excluding bonus/equity)
Adjusts costs for local market rates (1x multiplier)
Used to estimate manager's time cost
Total Onboarding Cost
$77.0K
That's 7.7x monthly salary - for a software engineer at $120,000/year.
Visible Budget Cost
$31.5K
Recruiter fee + job ads + equipment
Hidden Cost
$45.5K
Training, manager time, productivity loss
Recruiting
$26.6K
Job ads, interviews, recruiter fee
Equipment & Licenses
$6.7K
Hardware, software, tool access
HR & Admin
$1.6K
Paperwork, setup, onboarding tasks
Training
$3.9K
Orientation and role training
Manager Time
$3.7K
1:1s, shadowing, coaching
Productivity Ramp Cost
$27.0K
6 months below full output
Empty Seat Cost
$7.5K
Revenue/output lost while role was open
Cost Timeline - Day 0 to Full Productivity
6 month rampJob ads, interviews, recruiter fee
Hardware, software, access provisioning
Paperwork, background checks, onboarding tasks
Formal training, company orientation, role-specific learning
Weekly 1:1s, shadowing, coaching sessions
Cost of working below full capacity
Revenue/output lost while role was open
Productivity Ramp Curve
100% at month 6Key insight: New hires typically operate at 10-25% productivity in their first month, reaching 50% by month 2-3. The grey area above the curve represents the hidden productivity cost you're already paying.
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Frequently asked questions
What is the average cost to onboard a software engineer?
The total cost to onboard a software engineer earning $130,000/year typically ranges from $65,000 to $195,000 (50-150% of annual salary). This includes recruiting fees ($16,000-$26,000 for external recruiters charging 15-20%), equipment and software licences ($3,000-$8,000), onboarding training and HR admin ($2,000-$5,000), senior engineer mentoring time (often 20-30% of a senior's time for 3 months), and the productivity ramp-up period where the new hire operates at 30-70% productivity for 3-6 months.
How long does it take for a software engineer to reach full productivity?
Research consistently shows software engineers take 3-9 months to reach full productivity, depending on codebase complexity and team size. Studies by First Round Capital found the average engineer ramp period is 6 months. During months 1-2, engineers typically operate at 25-40% productivity. Months 3-4 see 50-70%. Full productivity (90%+) is rarely achieved before month 5-6 for complex codebases. High staff turnover means this ramp cost repeats frequently.
What is the cost of a senior engineer's mentoring time during onboarding?
Senior engineers typically spend 20-40% of their working time in the first 2-3 months helping a new hire onboard. For a senior engineer earning $180,000/year ($86/hour), 30% of their time for 3 months represents approximately $10,800 in diverted senior productivity. This is one of the most consistently underestimated costs in engineering onboarding, rarely appearing in HR cost models.
How can companies reduce engineering onboarding cost?
The most impactful strategies are: (1) maintain a living 'day one runbook' so new engineers can self-serve setup rather than requiring senior time, (2) invest in developer experience tooling (fast CI, good local dev environments, clear architecture docs) which reduces ramp time, (3) assign a dedicated onboarding buddy separate from the hiring manager, (4) use structured 30/60/90 day plans with clear milestones, and (5) track ramp velocity metrics to identify bottlenecks in the onboarding process.