A complete online math-competition platform: one timed exam ranked by birth year, with instant auto-grading and a live leaderboard — built for a friend who announced a competition with no website to run it on.
Live in production — serving real timed exams
Role: sole developer — a friend announced a math competition but had no website, so I offered to build it. I designed and shipped the full platform: Google sign-in, study sources, practice models with on-demand answer keys, a protected timed exam (one question at a time, draft autosave, tab-switch detection with auto-submit), and instant grading with per-question review plus a year-filtered leaderboard with medals. Students get a personal dashboard with eligibility checks and live exam status. Answer keys never leave the server, exam sessions use signed tokens, and an admin dashboard manages questions, models, contestants, integrity flags, and one-click publishing with readiness checks.
Software counts when real people depend on it — an exam timer and grading can't fail at 9 AM.