Tell us about a decision you regret in a past project. What did you learn?

Short answer: In one project, I decided to build a custom grid component in React instead of using a third-party library like AG Grid or Material Table.

Explain a bit more

We thought we’d save licensing costs, but maintaining it became a huge time sink—handling sorting, filtering, edge cases. In hindsight, the cost of development far outweighed the license. Lesson learned: Don’t reinvent the wheel when a reliable tool exists—and always consider long-term maintenance when making build vs. buy decisions. Process, Quality & Best Practices – Interview Questions + Real-World Answers

Say this in the interview

1. Define — one clear sentence (the short answer above).
2. Example — relate it to a project like ShopNest or your real work.
3. Trade-off — when you would not use it.