Hidden costs of full-time engineering hires
Hidden costs of full-time engineering hires
A full-time US engineer with a $180,000 base salary costs roughly $290,000 in year one once you add payroll taxes, benefits, equity, recruiter fees, ramp time, equipment, and PTO. That is a 1.6x multiplier on base, and most founders only budget for the salary line. The hidden 60% is where engineering budgets quietly break.
This post walks through every line item, runs a worked example, and compares the fully-loaded number against weekly booking on Cadence so you can size the real spend before signing an offer letter.
The headline number: salary is roughly 60% of true cost
Founders price engineering hires off Levels.fyi or Glassdoor and assume base salary is the cost. It is not. The fully-loaded cost (everything you spend to get one engineer shipping for one year) is closer to 1.5x to 1.7x of base in the US, slightly lower in Europe, and slightly higher in tier-one cities like SF or NYC.
The structural drivers are constant: payroll taxes are set by law, benefits are set by your insurance broker, recruiter fees are set by the market, and ramp time is set by your codebase complexity. Founders cannot wish these costs away.
Line item 1: payroll taxes (7.65% on the employer side)
In the US, employers owe FICA (Social Security at 6.2% on the first $176,100 of 2026 wages plus Medicare at 1.45% with no cap). That is 7.65% employer-side, plus state unemployment insurance (SUI, typically 0.5% to 6.0% depending on state and claims history) and federal unemployment (FUTA, effectively 0.6% on the first $7,000).
On a $180,000 salary, expect roughly $14,400 in employer payroll taxes. This is not optional and not negotiable.
Line item 2: benefits (25% to 30% of base salary)
Benefits is the largest hidden line. The Bureau of Labor Statistics pegs benefits at roughly 30% of wages for civilian workers, and software engineers usually sit above that average because they expect strong health coverage and 401(k) match.
A typical 2026 benefits package for a senior engineer includes:
- Health insurance: $1,200 to $2,400 per month for family coverage, employer pays 70% to 85%
- Dental and vision: $80 to $150 per month
- 401(k) match: 3% to 6% of salary
- Life and disability insurance: $40 to $100 per month
- HSA or FSA contribution: $500 to $1,500 per year
- Parental leave accruals, mental health stipends, gym subsidies: $1,000 to $3,000 per year combined
Round to $45,000 to $54,000 per year on a $180k base. If you skip benefits, you pay it back through higher salary demands or attrition.
Line item 3: equity dilution (the cost no one prices)
You also pay in equity. A senior engineer at a Series A startup typically receives 0.2% to 0.5% of fully-diluted shares, vesting over 4 years with a 1-year cliff. The standard structure has not changed much; see our deep dive on software engineer equity vesting in 2026 for the mechanics.
Dilution looks free because it is non-cash, but it is real cost. If your company is worth $30M post-money, a 0.3% grant is $90,000 of value transferred to one engineer over four years. That is roughly $22,500 per year in dilution cost.
Most founders ignore this until the next round, when the cap table is suddenly tight and the next $5M raise costs another 3% of the company.
Line item 4: recruiter fees (22% of first-year salary)
If you use an external recruiter, expect to pay 20% to 25% of first-year base salary, typically 22% as the market median. On a $180k senior hire, that is $39,600 wired to the agency the day the offer is accepted.
In-house recruiters are not free either. A US tech recruiter costs $130k to $170k fully-loaded, so if they make 8 hires per year you are paying roughly $20k per hire in sourcing overhead.
Either way, plan for $20k to $40k per senior hire in sourcing cost. This is the single most painful line because it is paid upfront before the engineer has written a line of code.
Line item 5: onboarding ramp (3 months at partial productivity)
A new engineer is not productive on day one. The industry rule of thumb is 3 months to full productivity for a senior, longer if your codebase is complex or sparsely documented. During that ramp, the engineer is paid 100% but ships at roughly 30%, 50%, and 70% in months 1, 2, and 3.
Lost productivity cost on a $180k base is approximately:
- Month 1 at 30%: $10,500 cost, $4,500 value, $6,000 lost
- Month 2 at 50%: $10,500 cost, $7,500 value, $3,000 lost
- Month 3 at 70%: $10,500 cost, $10,500 value, break even
Call it $9,000 to $15,000 in onboarding drag, plus the time your existing engineers spend pairing instead of shipping their own scope.
Line item 6: equipment, tools, and software stipends
Each engineer needs a laptop (MacBook Pro at $2,500 to $3,500), monitor and peripherals ($800), and an annual tool stack: GitHub, Linear, Notion, Figma, Sentry, Datadog, AWS dev environments, plus AI coding tools like Cursor or Claude Code. Conservatively, $300 to $500 per month per engineer in software, plus $4,000 amortized hardware in year one.
Annual total: $7,500 to $10,000 per seat. Office space, if you have one, adds $5,000 to $15,000 per seat per year depending on city.
Line item 7: PTO accrual, holidays, and severance reserve
US engineers typically get 15 to 25 days PTO plus 10 federal holidays. That is 5 to 7 weeks of paid non-work time, or roughly 12% of salary in dead-weight cost (call it $21,600 on $180k).
You should also reserve for severance. Tech severance norms in 2026 are 2 to 4 weeks per year of service, plus benefits continuation. If your hire does not work out at month 9, expect to pay 1 to 2 months of salary as exit cost, or $15,000 to $30,000.
Worked example: $180k salary becomes $290k year-one
Here is the full math on a senior US engineer:
| Line item | Cost |
|---|---|
| Base salary | $180,000 |
| Employer payroll taxes (7.65% + SUI/FUTA) | $14,400 |
| Benefits (health, 401k, life, dental, vision) | $50,000 |
| Equity dilution (0.3% over 4 years, $30M post) | $22,500 |
| Recruiter fee (22% of base) | $39,600 |
| Onboarding ramp loss (3 months partial productivity) | $12,000 |
| Equipment + tools + software | $9,000 |
| PTO accrual (built into salary line, no double-count) | $0 |
| Severance reserve (15% probability of year-1 exit) | $4,500 |
| Office or remote stipend ($300/mo) | $3,600 |
| Year-one fully-loaded total | $335,600 |
| Excluding equity dilution (cash burn only) | $313,100 |
If you exclude recruiter fee (you sourced inbound), the cash number is $273,500. If you include it, you are at $335,600. The honest midpoint most founders should budget for is $290,000 fully-loaded year one for a $180k base hire. That is a 1.61x multiplier.
This is consistent with what our engineering team cost by country breakdown shows across regions: the US is the most expensive, with similar multipliers applied to lower base rates in Europe and Asia.
The on-demand alternative: weekly booking with no overhead
Weekly booking is a structurally different cost model. There is no payroll, no benefits, no equity grant, no recruiter, no ramp loss (the engineer is vetted before they unlock booking), no equipment, and no severance.
Cadence pricing is fixed:
- Junior, $500/week for cleanup, integrations, doc-writing
- Mid, $1,000/week for standard features, refactors, test coverage
- Senior, $1,500/week for owned scope, architecture, complex refactors
- Lead, $2,000/week for system design and fractional CTO work
A senior on Cadence for 52 weeks costs $78,000 all-in. No FICA, no benefits, no recruiter, no laptop. The price you see is the price you pay, billed weekly, cancel any week.
Every engineer on Cadence is AI-native by default. They are vetted on Cursor, Claude Code, and Copilot fluency in a founder-led voice interview before they unlock bookings. The median time to first commit across the 12,800-engineer pool is 27 hours from booking.
Here is the same comparison, three ways:
| Approach | Year-one cost | Time to first commit | Replaceable | Best for |
|---|---|---|---|---|
| Full-time US senior | ~$290,000 | 2 to 4 weeks | 1-3 month exit | 5-year strategic role |
| Toptal / Upwork agency | $150,000 to $200,000 | 1 to 2 weeks | Contract notice | 6-12 month projects |
| Cadence senior, 52 weeks | $78,000 | 27 hours median | Any week, no notice | Variable scope |
When full-time still wins
Honest framing: weekly booking is not always cheaper in outcome terms, even if it is cheaper in cash. Full-time hires still win in three situations:
- Five-year strategic roles where retained knowledge compounds (founding engineer, security lead, infra owner).
- Roles that require deep proprietary context that takes 6+ months to absorb.
- Senior managers who need direct reports and headcount authority.
If the scope is a 12-week backend rewrite, a payments integration, an internal tool, or a mobile app refresh, weekly booking is the better math. If the scope is "own our entire data infrastructure forever," hire full-time.
What to do: a 4-question budget framework
Before signing any offer letter, run the role through this filter:
- Is this a 12-week project or a 5-year capability? If under 12 months, book weekly. If over 5 years, hire.
- Have I validated the role with a 4-week pilot? Booking a Cadence senior for a 4-week trial costs $6,000. A bad full-time hire costs $40,000 minimum in recruiter and ramp before you even know it is bad.
- What is my replacement cost if this hire does not work out? If you cannot afford 2 months of severance plus another $40k recruiter fee, you cannot afford to hire.
- Am I over-paying senior for mid-tier scope? Half of "senior" hires we see could be done by a mid engineer at $1,000/week on Cadence. See our engineering rate cards guide for how to map scope to tier.
Run your own numbers on Cadence's ROI calculator before you sign the next offer letter. It compares your loaded full-time cost against the equivalent weekly booking, week by week, with honest assumptions.
If you are choosing between extending an offer and booking a senior for a 4-week trial, the trial is almost always the cheaper way to validate.
Sources
- Bureau of Labor Statistics, Employer Costs for Employee Compensation, March 2026 release
- IRS 2026 Social Security wage base ($176,100)
- Levels.fyi 2026 software engineer compensation data
- Stack Overflow Developer Survey 2025 (compensation and tenure)
- Hired State of Software Engineers 2026
For more context on how these numbers move across company stages, see software engineer salary by company stage and the engineering productivity benchmarks 2026 for what shippable output actually looks like at each tier.
FAQ
What is the fully-loaded cost of a software engineer in 2026?
For a US senior engineer with a $180,000 base salary, the fully-loaded year-one cost is approximately $290,000 once you include payroll taxes (7.65%), benefits (25 to 30% of salary), equity dilution, recruiter fees (22% of first-year salary), onboarding ramp loss, equipment, and severance reserve. The standard multiplier is 1.5x to 1.7x of base.
How much does it cost to hire a developer through a recruiter?
External recruiters typically charge 20% to 25% of first-year base salary, with 22% as the market median. On a $180k senior hire that is roughly $39,600 paid upfront when the offer is accepted. In-house recruiting costs roughly $20,000 per hire when amortized across 8 hires per year per recruiter.
What is the cost of a bad engineering hire?
A bad senior hire who exits in month 9 typically costs $80,000 to $120,000 in wasted salary, recruiter fee, equipment, onboarding time from existing engineers, and 1 to 2 months of severance. The opportunity cost of the scope that did not ship is often larger than the cash loss.
How long until a new engineer is fully productive?
The industry rule of thumb is 3 months to full productivity for a senior in a well-documented codebase, and 4 to 6 months in a complex or sparsely-documented one. During ramp the engineer is paid 100% but ships at roughly 30% / 50% / 70% across months 1, 2, and 3.
Is on-demand engineering cheaper than full-time?
For variable or project scope under 12 months, yes. A senior on Cadence at $1,500/week for 52 weeks is $78,000 all-in versus roughly $290,000 fully-loaded for a US full-time hire. For 5-year strategic roles where retained context compounds, full-time still wins on outcome value even though cash cost is higher.