We Built an Open-Source Coding Exam Platform Because Every Vendor Let Us Down

Every year, our team visits engineering colleges across India to hire freshers. The first round is always an online coding test — 300+ students, one shot at finding the ones who can actually think. We tried Coderbyte. Fifty concurrent user limit. So we'd split students into batches, stagger timings, juggle schedules between college coordinators and our engineers. We tried HackerRank's community edition. Different tool, different headache. Every vendor had a ceiling — concurrency limits, inflexible problem formats, generic DSA questions that tested memorization over problem-solving. And the pricing? Designed for companies ten times our size. I was ranting about this to my engineering team. Out loud. In our standup. Trying to find yet another vendor to evaluate. My engineers — most of them freshers themselves just a couple years ago — went quiet. Said nothing for a few days. Then they shipped a product. Two engineers. One weekend. AI-assisted development. And two days of intensive testin