To hire an AI engineer, look for someone who has shipped a language-model feature to real users and can show how they measured its quality. Recruit from hackathons, open-source projects and product engineers who moved into the space, screen on evaluation practice rather than model trivia, and interview around cost, latency and failure handling.
This field rewards public building, which makes sourcing unusually direct. Look at contributors to open-source agent frameworks, evaluation tooling and retrieval libraries. Hackathon finalists, people posting working demos with honest limitations, and authors of write-ups about what failed in production are all strong signals. A second pool is product engineers who added a language-model feature to an existing application and learned the operational reality the hard way; they often outperform candidates with research backgrounds for product work. Ask for the live feature, not the notebook. Job titles are still unsettled here, so search on the work rather than the label. Posting on general boards produces heavy noise, so pair it with [AI recruiting tools](/ai-recruiting-tools) that help you rank applications against the actual requirements.
Describe the product feature and the constraints around it. Someone building a customer-facing assistant with a strict latency budget does different work from someone building an internal document-search system or an evaluation pipeline. Say whether you are using hosted models, self-hosted open models, or both, and be clear if that decision is still open. State the data situation plainly, including what you have, where it lives and what privacy rules apply, since data access determines what is buildable. Say who owns quality: if nobody has defined what good output looks like, that becomes their first job and they should know it. Our [AI engineer job description](/job-descriptions/ai-engineer) frames the role around product outcomes and evaluation rather than a model checklist.
Ask one question early: how did you know the feature was working? A candidate who has shipped will describe an evaluation set, a scoring method, and what they did when quality regressed after a prompt or model change. A candidate who has only demoed will describe the demo. Then use a debugging scenario: a retrieval system returns confident but wrong answers, and you ask what they investigate. Strong answers examine chunking, embedding quality, retrieval ranking and prompt context separately rather than jumping to a bigger model. Ask about cost and latency for something they shipped, because production experience shows immediately. Track these structured signals against the same criteria for every applicant in your [applicant tracking system](/ats).
Four rounds work: a scoping call, an evaluation and quality discussion, a systems design round, and a product judgement conversation. The evaluation round is the one most teams skip and the one that predicts success best, so spend real time on how they build test sets, handle subjective outputs and detect regressions. In systems design, ask them to design a document-grounded feature end to end, including ingestion, retrieval, caching, guardrails and what happens when the model provider has an outage. Product judgement means asking when they decided a language model was the wrong tool. Our [AI engineer interview questions](/interview-questions/ai-engineer) support these rounds, and a tighter loop helps you [reduce time to fill](/reduce-time-to-fill) in a fast-moving market.
Demand outpaces genuine experience, and many applicants have tutorial familiarity rather than production history, so filter hard while moving fast on the ones who clear the bar. Compensation expectations are elevated and inconsistent, which makes a defined internal band and a clear scope more important than usual. Candidates close on interesting data, real users, and permission to ship rather than to run indefinite experiments. They decline roles where the mandate is vague, where nobody will define quality, or where leadership expects a model to solve an unclear business problem. Be specific about what you want built in the first ninety days, because that specificity is exactly what separates you from the many companies hiring without a plan.
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