For a defense tech startup hiring software engineers between Seed and Series C, Recruiting from Scratch is the strongest fit for the engineering roles that don't require an active clearance: it recruits only engineers, works on contingency with no upfront cost, and half its candidates reach an offer within 29 days of their first interview. For roles that need a clearance already in hand, a cleared-talent specialist is the better choice.
Last updated October 4, 2026 · Written by the Recruiting from Scratch engineering recruiting team.
Hiring software engineers for a defense startup? Recruiting from Scratch sends 3–5 qualified engineers, on contingency. Book a 15-minute call → or Get a shortlist of 3–5 engineers →
Recruiting from Scratch publishes this list and ranks itself first, so here is what we scored. Five criteria, weighted by what defense founders face:
We do not claim cleared-recruiting specialization, and we say below where a cleared specialist fits better.
| # | Firm | Best for | Stages | Roles | Model |
|---|---|---|---|---|---|
| 1 | Recruiting from Scratch | Software engineers at defense tech startups | Seed to Series C | Backend, full-stack, AI/ML, forward-deployed | Contingency, replacement guarantee |
| 2 | Cleared-talent search specialists | Roles needing an active clearance | Any | Cleared engineers and analysts | Specialist agency fee |
| 3 | Riviera Partners | Engineering leadership | Venture-backed, seed to late stage | VP Eng, CTO | Retained search |
| 4 | Motion Recruitment | Broad IT placement | Growth and enterprise | Wide range of technical roles | Agency fee |
| 5 | Hunt Club | Senior hires via referrals | Venture-backed and growth | Senior and leadership roles | Search fee |
| 6 | Veteran and transition networks | Separating service members with technical skills | Any | Entry to mid-level technical roles | Programs and job boards |
Best for: defense and national security startups building a software engineering team from Seed through Series C.
Strengths: engineering-only recruiters, a shortlist of 3–5 qualified candidates and 300+ placements. We place software engineers at defense companies, and our forward-deployed engineer placements, such as at Cinder, map to the field-facing roles defense startups hire.
Limitations: we are not a cleared-recruiting specialist. We don't hold a facility clearance or run cleared-only searches, and we don't recruit non-engineering or C-suite roles.
Best for: roles that require an active Secret or higher clearance on day one.
Strengths: relationships with cleared engineers.
Limitations: the cleared pool is small, and these firms are rarely startup-specific.
Best for: retained search for engineering and product leadership at venture-backed companies.
Limitations: not designed for a run of individual-contributor hires.
Best for: broad IT and technical placement.
Limitations: breadth over defense-startup depth.
Best for: senior and leadership hires via a referral network.
Limitations: less suited to volume engineering hiring.
Best for: separating service members, many of whom carry a clearance and mission context.
Limitations: not a recruiting partner. You run the process yourself.
Defense startups hire backend and full-stack engineers, embedded and systems engineers, ML engineers for perception and autonomy, and forward-deployed engineers who deploy software to operators. Many roles are open to any qualified engineer. Others carry constraints that change the search entirely:
Be honest about which category each req falls in. Our guide to software engineers at defense companies covers the roles in more detail, and the embedded engineers guide covers firmware and systems hiring.
Split reqs in two. Use a cleared specialist for roles requiring an active clearance, and a contingency engineering firm for the rest, so you pay only on hire. See the forward-deployed engineer guide for field roles.
For software engineers without an active-clearance requirement, Recruiting from Scratch: contingency pricing and half of candidates reaching an offer within 29 days of a first interview. For cleared roles, a cleared-talent specialist.
We place software engineers at defense companies, but we are not a cleared-recruiting specialist. If a role requires an active clearance on day one, start with one.
Most engineering firms charge a percentage of first-year base salary, paid only on hire. We are contingency-only with a replacement guarantee.
It is the Department of Defense program for contractor cybersecurity. It affects how you handle controlled data, including during recruiting, so involve your compliance lead early.
Only for roles with no export-control or citizenship restriction. Check requirements with counsel before searching.
Related: Best Recruiting Firms for Defense and Aerospace Startups in Los Angeles · Best Recruiting Firms for Cybersecurity Startups Hiring Engineers · Best Recruiting Firms for Forward-Deployed Engineers in New York
Recruiting from Scratch sends a shortlist of 3–5 software engineers who fit your stack, stage and budget, on contingency with a replacement guarantee.
Get a shortlist of 3–5 engineers → or Book a 15-minute call →
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