Don't ask generic questions like "Can you build this?"—the answer is always yes. Ask questions that reveal their operational maturity.
1. How are scope changes handled once work has already started?
This comes up on almost every project. What matters is whether changes are logged and agreed on, or handled informally, where costs and timelines slowly slip.
2. Has there been a project that went seriously off track, and what happened after that?
Most agencies have one. The answer usually shows how problems are handled internally when delivery pressure hits.
3. How much flexibility is built into your architecture as AI capabilities continue to change?
This isn’t about timelines or predictions. It shows whether systems are designed to adapt or whether future changes will require major rework.
4. What does testing actually look like during development?
Teams that take quality seriously tend to talk about automation, regressions, and occasionally AI in software testing. Vague answers usually point to reactive fixes later.
5. If the engagement ends before completion, who controls the source code?
This only becomes important when relationships break down. Clear ownership avoids delays and legal friction if development needs to continue elsewhere.
6. How is user data handled when applications have users in Europe or other regions?
Agencies working at scale usually understand GDPR roles without needing prompts. Gaps here tend to surface late and expensively.
7. How do you decide between native and cross-platform approaches for performance-heavy features?
There’s no universal rule. The reasoning behind the choice is more important than the choice itself.
8. At what point is accessibility considered during design and development?
When accessibility is treated as a final task, it often becomes costly. Earlier consideration usually leads to fewer usability and compliance issues.
9. Are developers on the project full-time staff or rotating contractors?
Team stability affects continuity more than most buyers expect, especially on longer engagements.
10. What happens internally if a serious security issue is discovered after launch?
Prepared teams describe steps and responsibilities. Unprepared teams keep the answer abstract.
