Every non-technical founder hits the same wall at the first engineering hire. You can evaluate whether you want to work with this person, whether they communicate clearly, whether they seem to care about your problem. What you cannot do is judge whether they are technically as good as they say, and there is no one on your team who can, because this is the first engineer. You are being asked to make one of the highest-stakes bets in the company's life while missing the exact skill the bet turns on.
The instinct is to muddle through on gut feel, or to over-index on credentials because the resume is the only thing you can read. Both are how founders end up with a confident hire who cannot ship, or a genuinely good engineer they passed on because a stronger interviewer talked a better game. The fix is not to become technical overnight. It is to rent the technical judgment you are missing for the small window where you need it.
Borrow the judgment you do not have
You will almost certainly want to bring in someone external and technical, whom you trust, to run the technical portion of the interview. This is not an admission of weakness, it is the standard playbook, and it is cheap relative to what it prevents. It is far cheaper to rent technical judgment early than to pay for it later in missed deadlines and a rewrite. The bill for skipping this step does not disappear, it just arrives later and larger.
The most direct version I have seen: a healthcare founder with no technical background paid a senior engineer 200 dollars per interview to run the technical evaluation of her candidates. She made three hires that way, at roughly 600 dollars a hire, and all three were still with the company two years later. Six hundred dollars to de-risk a hire that would otherwise have been a coin flip is one of the best returns on spend available to an early founder. Compare it to the fully loaded cost of a wrong first engineer and it is not a real decision.
Where to find the person who vets
The cleanest source is your investors and advisors. Early investors can refer trusted senior engineers from their network, and some will formalize the relationship as an advisor with a defined role and a small equity or cash arrangement. If you have raised even a small round, use it, because this is exactly the kind of help that money is supposed to unlock. If you have not raised, the pay-per-interview arrangement works with any senior engineer you can reach through a mutual contact, and many are happy to do it as paid side work.
What you want from this person is narrow and specific: can this candidate actually do the technical work, are their claims about past projects credible, would you be comfortable having them build the foundation of a product. You are not outsourcing the whole decision. You are filling in the one dimension you cannot read yourself, and keeping the dimensions you can. This pairs naturally with getting better at the parts you can do, which I have covered in how to interview a senior engineer when you cannot read code.
Keep the parts only you can judge
Handing off the technical read does not mean handing off the hire. There are things only the founder can evaluate, and they are not the smaller half of the decision. Whether you can work with this person day to day. Whether they get genuinely interested in your problem or just want a job. And a test you are uniquely positioned to run: whether they can explain what they are building, and why, in plain English.
That last one is not a soft skill, it is a hard signal. An engineer who cannot describe their work in language a non-technical person understands is a serious risk for you specifically, because you are going to depend on their explanations for years. If they hide behind jargon in the interview, when they are trying to impress you, it will only get worse once they are comfortable. That is a red flag you can read perfectly well without knowing how to code, and it is one your borrowed technical evaluator might miss precisely because they speak the jargon fluently. The two of you cover different blind spots, which is the whole point.
Structure the split
Run the process so each person judges what they are equipped to judge. You take the early conversations, the vision and working-style fit, the plain-English test. Your technical evaluator takes a focused technical session, and ideally reviews a short paid work sample rather than relying on interview theater alone. Then you compare notes, and you make the final call, because it is your company and your equity, informed by a read you could not have produced on your own.
If this is starting to sound like you need ongoing technical judgment and not just a one-time interview, that is often true, and it is a large part of why fractional technical leadership exists. Renting senior judgment for the decisions that turn on it is the entire model, and I have written about what that judgment is actually worth. If you want a technical read on a candidate you are close to hiring, or help structuring the whole process, book a call.
FAQ
How much should I pay someone to run technical interviews for me?
A few hundred dollars per interview is a common and reasonable rate for a senior engineer's time, and it is trivial against the cost of a mis-hire. Some founders instead give a small advisor arrangement in exchange for ongoing help across multiple candidates.
Can't I just trust the candidate's resume and references?
References help and you should do them well, but a resume tells you where someone worked, not whether they were good, and impressive candidates can talk past a non-technical interviewer. A trusted technical evaluator is what turns a plausible resume into a verified one.
What should I personally evaluate if someone else handles the technical part?
Working-style fit, genuine interest in your problem, and whether they can explain their work in plain English. That last test is one you are actually better positioned to run than a technical evaluator, because you are the audience their explanations will have to serve for years.
Is a paid technical advisor different from a fractional CTO?
Yes, in scope. A pay-per-interview advisor fills a single gap during hiring. A fractional CTO provides ongoing senior judgment across hiring, architecture, and vendor decisions. Many founders start with the former and realize they want the latter once they see how often the missing judgment costs them.