For a Series A startup hiring engineers, a specialist contingency recruiting firm such as Recruiting from Scratch is usually the fastest way to add capacity without adding headcount: no retainer, a shortlist of 3–5 qualified candidates, and half of candidates reaching an offer within 29 days of a first interview. Dover suits founders who want to run the process themselves, and an in-house recruiter wins once hiring is continuous.
Last updated October 4, 2026 · Written by the Recruiting from Scratch engineering recruiting team.
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We judged the three options on five questions a Series A founder actually asks:
Recruiting from Scratch publishes this comparison and is one of the options, so treat our recommendation as informed but not neutral. Where Dover or an in-house recruiter is the better pick, we say so.
| Option | What it is | Cost model | Founder time | Best at | Weakest at |
|---|---|---|---|---|---|
| Dover | Recruiting software (ATS plus sourcing tools) with optional services | Software plan, services optional | High: you own the process | Founders with time to run hiring | Searches where founder time is limited |
| Specialist recruiting firm | External recruiters who source, screen and present candidates | Contingency: a percentage of first-year base, paid on hire | Low to medium | Bursts of 3–15 engineering hires | Continuous, company-wide hiring across every function |
| In-house recruiter | A full-time employee who owns your pipeline | Salary, tools and a ramp period | Medium at first, then low | Steady hiring and employer brand | Speed in the first months, niche engineering networks |
Dover is recruiting software for founders running their own process, with sourcing support available alongside it. Best for: a founder or head of engineering who has several hours a week to message candidates, run screens and sell the role. Limitations: the software organizes the work but the founder still does the selling and closing, which is where senior engineering searches are won or lost.
A contingency firm that recruits only engineers takes the sourcing, outreach and screening off your plate and sends a shortlist. Best for: a Series A that needs several engineers in a quarter and has no recruiter yet. Limitations: a firm works the searches you hand it; it will not build your careers page, run campus programs or manage a coordinator team. Recruiting from Scratch is engineering-only, so it is the wrong tool for sales or marketing hiring.
A full-time recruiter owns the pipeline, knows your culture and can run continuous hiring across functions. Best for: a company that expects to hire most months for the next year or more. Limitations: a new recruiter needs weeks to learn your market and build a sourcing rhythm, and a generalist rarely has deep engineering networks on day one. The cost is fixed whether or not a search closes.
Most Series A teams do not have to pick one forever. A common sequence: use a contingency firm for the first burst of engineers while the founder keeps screening lightly, then hire an in-house recruiter once hiring becomes continuous, and keep the firm for senior or niche searches. Our guide to the best recruiters for engineers at Series A startups goes deeper on picking the firm, and contingency vs retained recruiting explains the pricing models.
Think in terms of throughput. If you need a handful of engineers in a few months, paying only on hire protects your runway. If you will make dozens of hires over two years, a salary can be cheaper per hire than any external model. The break-even depends on your volume, so count the hires you actually plan, not the ones you hope for.
Forward-deployed engineering is a good test, because the role mixes engineering and customer work and is hard to source from a generic pool. We've placed forward-deployed engineers at Cinder, backend and machine-learning engineers at Mercor, and an agent software engineer in New York at Decagon. In each search the work that mattered was the screen before the founder's first interview: a shortlist of 3–5 means interview time goes to finalists instead of sourcing. For background on this specialty, see how to hire forward-deployed engineers.
Neither always. A contingency firm is better for a burst of engineering hires and zero fixed cost; an in-house recruiter is better once hiring is continuous across the company.
Dover is primarily recruiting software, an applicant tracking system plus sourcing tools, with optional recruiting services. It is built for founders who run their own process.
When you can name steady hiring for a year or more. Until then, paying a firm only on hire usually costs less than carrying a salary through a slow ramp.
Yes. Many teams keep a specialist firm for senior or niche engineering searches while the in-house recruiter handles volume and other functions.
On contingency: no retainer or upfront cost, a percentage of first-year base salary paid only on hire, and a replacement guarantee.
Related: Embedded Recruiter vs Recruiting Firm: The Right Choice for Your First 20 Hires · When to Hire Your First In-House Recruiter vs Use a Recruiting Firm · [Recruiting Marketplaces vs Specialist Recruiting Firms for Startups [Comparison]](https://www.recruitingfromscratch.com/blog/recruiting-marketplaces-vs-specialist-recruiting-firms)
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