How to Vet a Freelance Developer Before Hiring
A polished portfolio and a confident sales call are the easiest things to fake or oversell. Here's what actually predicts whether someone can do the work.
Ask about a project that didn't go well
Anyone can talk about their wins. How someone describes a project that had real problems, and specifically what they'd do differently, tells you more about their judgment than any success story does.
Ask them to explain a technical decision, not just list technologies
A list of technologies used means nothing on its own. Ask why they chose a specific approach on a past project, and listen for whether the answer is a genuine trade-off analysis or a generic "it's industry standard" non-answer.
Check if they ask you hard questions back
Someone who immediately agrees to whatever you describe without pushing back on ambiguous requirements or unrealistic timelines is either inexperienced or telling you what you want to hear. A real technical partner asks clarifying questions that show they're actually thinking about your specific problem.
Verify the portfolio is real, and theirs
A quick check: ask specific technical questions about a portfolio project's implementation. Someone who built it can answer detailed follow-ups naturally; someone presenting someone else's work (common at agencies presenting a team's collective portfolio as one person's) will struggle with specifics.
Look at how they handle scope and communication in the first conversation
Do they give you a real, scoped plan, or a vague estimate with no structure? Do they explain technical concepts in a way you can actually follow, or lean on jargon to sound authoritative? This first interaction is usually representative of how the whole engagement will feel.
Ask what happens if it's not working out
A developer with a clear, calm answer to "what if this isn't going well three weeks in" (milestone-based engagement, clear stopping points, no big upfront commitment) is signaling confidence in their own process. Evasiveness here is a real signal too.
We answer exactly this question directly on our SaaS Development page, since it's one of the most common concerns prospects bring to a first call.