5 Questions to Ask Before Hiring Any Developer

Most bad developer hires aren't caused by bad luck. They're caused by the wrong questions in the vetting process — or no real vetting process at all.

Founders often evaluate developers on the wrong criteria: impressive portfolios, fast reply times, or a confident sales pitch in a first call. These things feel like signals, but they're not predictive of whether the engagement will actually go well.

Here are the five questions that actually separate good developers from expensive disappointments — and how to evaluate the answers.

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Question 1: "Can you walk me through a project that went wrong and how you handled it?"

Every experienced developer has had projects go sideways. The question isn't whether it's happened — it's how they responded.

What you're listening for:

• Honest self-reflection (not just blaming the client)
• Specific actions they took to recover
• What they learned and changed as a result

A developer who says "every project goes smoothly" is either lying or hasn't worked on enough challenging projects. A developer who describes a failure clearly, takes accountability, and explains what changed — that's someone who's developed professional judgment.

Red flag: Vague answers, blame-shifting, or the claim that nothing has ever gone wrong.

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Question 2: "How do you handle scope changes mid-project?"

Every project gets scope changes. The question is whether the developer has a mature, professional process for managing them — or whether they either silently comply (and resent it) or become defensive and confrontational.

A good answer includes:

• A clear process for documenting change requests
• A practice of estimating impact (time, cost, technical complexity) before agreeing
• An expectation of explicit client approval before making changes

This question also reveals whether the developer understands that client relationships are as important as code quality. A great developer is also a great communicator who protects both parties from misunderstanding.

Red flag: "I just try to accommodate what the client needs" (no structure) or "I always go by the original spec" (no flexibility).

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Question 3: "Who will own the code, and what access will I have throughout the project?"

This is a rights and transparency question — and how a developer responds tells you a lot.

The right answer: you own all code from the moment it's written, you have access to the repository from day one, and you retain access after the engagement ends regardless of payment disputes.

Some developers are used to controlling repos and handing over a zip file at the end. This is a risk pattern. You should always have live access to your codebase. No exceptions.

Also listen for how they handle IP: do they reuse components across client projects? Do they retain a license to your code? For most projects this isn't a major issue — but it's worth asking, especially if you're building something with proprietary business logic.

Red flag: Hesitation, vague answers, or any mention that code access depends on payment milestones.

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Question 4: "What does your communication process look like during an engagement?"

Communication is where most developer relationships break down. Founders expect regular updates; developers assume silence means everything is fine.

Ask specifically:

• How often will we have check-ins?
• How do you communicate progress?
• What's your typical response time for questions or blockers?
• What do you do when you're stuck?

A developer with a good communication process will have clear, practiced answers. They'll describe a weekly update cadence, demo-based progress sharing, and a low threshold for raising blockers quickly (rather than disappearing into a hole for two weeks trying to solve a problem alone).

This is also a good proxy for how they'll behave when things go sideways. If they're proactive communicators when things are good, they'll be proactive when things are hard.

Red flag: "I'll reach out when I have something to show you" or vague promises about being "responsive."

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Question 5: "Can I speak with one of your previous clients?"

This is the one question most founders are too polite to ask. Don't skip it.

A reference call with a previous client will tell you more in 15 minutes than any interview. Ask the reference:

• What was it like to work with them day-to-day?
• Did the project come in on time and on budget?
• How did they handle problems when they came up?
• Would you hire them again?

Good developers are proud of their client relationships and will happily provide references. If a developer is reluctant, pushes back, or can only provide clients who are "too busy to call," treat that as a significant warning sign.

Pro tip: Don't just accept the name they give you. If they have a portfolio or case studies, try to independently find and contact a past client.

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The Bigger Picture

Vetting developers takes time upfront. But a bad hire doesn't just cost money — it costs months of your time, delays your product, and can set your company back significantly.

The five questions above aren't meant to catch anyone out. They're meant to find someone trustworthy, communicative, and professionally mature enough to be a real partner in building your product.

At VL Studio, we take that partnership seriously. Our team brings AI-accelerated development, transparent communication, and a track record founders can actually check.

If you're evaluating development partners and want to see how we measure up, reach out at vlstudio.dev. We'll answer every question on this list — and any others you have.

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VL Studio builds AI-powered MVPs and automation systems for non-technical founders. Fast, focused, and founder-friendly.