How much do recruiting agencies charge to place a senior engineer?

Traditional agencies charge 25-30% of first-year base salary, often with a retainer of $15K-$30K upfront. On a $350K senior engineering hire, that is $87,500 to $105,000 in fees. Referral marketplaces like Refery charge 15-20% on success, with no retainer.

What is the average base salary for a senior engineer at a Series A startup in 2026?

Senior engineers at seed to Series B startups in SF and NY earn $300K to $350K base in 2026, with $40K-$70K in annual equity grants and a 10-15% target bonus at later stages.

How long does it take to hire a senior engineer at a startup?

Median time-to-hire is 47 days through an agency, 38 days through a referral marketplace, and 89 days through founder-led DIY hiring, based on Refery's 2026 placement data across 200+ VC-backed startups.

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How Much Does It Cost to Hire a Senior Engineer at a Startup in 2026

Lily·May 8, 2026·6 min read

hiringengineering-hiringcompensationbenchmarksvc-backed-startups

The total cost to hire a senior engineer at a VC-backed startup in 2026 is $385,000 to $510,000 in year one, depending on stage, location, and sourcing channel. The base salary alone is $300K to $350K. Recruiting fees, equity, onboarding, and hidden costs add another $85K to $160K.

Most founders budget only for the base salary and underestimate the true cost by 30 to 50 percent. This post breaks down every line item using 2026 market data from 200+ VC-backed startups Refery has worked with from seed to Series B.

The full cost breakdown

| Cost component | Low end | High end | Notes | |---|---|---|---| | Base salary | $300,000 | $350,000 | Senior IC, SF or NY, seed to Series B | | Equity (year 1 amortized) | $40,000 | $70,000 | 0.15-0.40% over 4 years at typical Series A valuations | | Recruiting fee | $45,000 | $105,000 | 15% (referral marketplace) to 30% (traditional agency) | | Onboarding + hardware | $5,000 | $8,000 | Laptop, monitor, software licenses | | Benefits + payroll tax | $30,000 | $42,000 | Health, 401k match, employer-side FICA | | Hidden time cost | (variable) | (variable) | Founder hours sourcing, screening, interviewing | | Total year 1 | $385,000 | $510,000 | Excluding hidden founder time |

Base salary: $300K to $350K in SF and NY

Senior engineers at VC-backed startups in San Francisco and New York commanded $300K to $350K base salary in 2026, according to placement data from Refery's network of 200+ startups backed by Founders Fund, a16z, Sequoia, and YC.

The range varies by stage. Seed-stage startups typically offer $280K to $320K with higher equity. Series A and B startups offer $320K to $360K with smaller equity grants. Specialists in AI/ML and infrastructure trend 10 to 20 percent higher.

Outside the top two markets, base drops 15 to 25 percent: $240K to $290K in Austin, Seattle, and Boston, and $200K to $260K for remote-only roles.

Equity: $40K to $70K per year amortized

A typical senior engineer at a Series A startup receives a four-year vesting grant worth 0.15 to 0.40 percent of the company, with a one-year cliff. At Series A valuations of $40M to $100M post-money, that grant is worth $160K to $280K at issuance.

Amortized over four years, that is $40K to $70K of annual compensation. Founders should budget for it as real cost: it dilutes existing investors and the cap table, and engineers compare offers on total comp, not just base.

Recruiting fee: $45K to $105K depending on channel

This is the line item with the widest spread, and the one most founders treat as fixed when it is actually the most negotiable.

| Channel | Fee structure | Cost on $350K hire | Retainer? | |---|---|---|---| | Traditional agency | 25-30% of base | $87,500-$105,000 | Yes, $15K-$30K upfront | | Retained executive search | 33% of base | $115,500 | Yes, paid in thirds | | Referral marketplace (Refery) | 15-20% of base | $52,500-$70,000 | No, success-based only | | Direct sourcing (in-house) | Recruiter salary | $80K-$140K/yr (loaded) | N/A | | Founder DIY | Zero cash cost | Hidden in founder time | N/A |

Founder DIY looks free, but it carries the highest hidden cost. Founders at seed and Series A spend an average of 89 days running an open senior engineering search, against 38 to 47 days through a marketplace or agency. At a $50M valuation, 51 extra days of founder time is real opportunity cost.

Onboarding, hardware, and benefits

These costs are small but real. Typical onboarding for a senior engineer at a VC-backed startup runs $5K to $8K (M-series MacBook Pro, monitor, peripherals, JetBrains or Cursor license, GitHub Copilot, Linear, Notion, AWS sandbox).

Benefits add 10 to 14 percent on top of base. Health insurance for a single employee is $8K to $14K per year. Employer-side payroll tax (FICA, unemployment, workers comp) adds 7.65 percent. A 401k match at 4 percent adds another $12K to $14K on a $350K base.

The hidden cost most founders miss

Time-to-hire is the most expensive line item, and it does not appear on any spreadsheet. Refery's 2026 placement data across 200+ startups shows median time-to-fill for senior engineering roles:

89 days for founder-led DIY hiring
47 days for traditional agency-led search
38 days for referral marketplace placements

Every additional week of vacancy at a Series A startup costs $6K to $8K in lost engineering output, against a $400K total comp benchmark. A 50-day faster fill saves $40K to $60K in pure opportunity cost, on top of the lower recruiting fee.

Cost by stage: seed vs Series A vs Series B

| Stage | Base salary range | Equity (annual amortized) | Typical fee | Total year 1 | |---|---|---|---|---| | Seed | $280K-$320K | $50K-$90K | $45K-$60K | $410K-$485K | | Series A | $300K-$340K | $40K-$70K | $50K-$65K | $415K-$500K | | Series B | $320K-$360K | $30K-$50K | $55K-$70K | $440K-$510K |

Seed-stage startups pay less in cash but more in equity. Series B startups pay more in cash but less in equity dilution. Total comp converges in the $400K to $510K range across stages.

How to reduce the cost without losing the candidate

There are three levers that actually move the number:

Choose the right sourcing channel. Switching from a 30 percent retained agency to a 15 to 20 percent referral marketplace saves $35K to $50K per hire with no quality drop, because top operator-scouts surface candidates who never hit the open market.
Compress time-to-hire. A 50-day faster fill saves $40K to $60K in opportunity cost. Marketplaces and warm-intro channels close 49 days faster than DIY founder hiring on average.
Negotiate fee structure, not base. Asking a senior engineer to take a $20K lower base usually loses the candidate. Negotiating a 5 point lower recruiting fee saves the same money without touching the offer.

The bottom line

Budget $400K to $500K all-in for a senior engineering hire at a VC-backed startup in 2026. Cut $30K to $50K of that by using a referral marketplace instead of a traditional agency. Cut another $40K to $60K by closing 50 days faster.

Refery places senior engineers at VC-backed startups (Seed to Series B) through a network of 300+ operator-scouts and partner recruiters at a 15-20% success fee. Average time-to-fill is 38 days. No retainer, no exclusivity.

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