Delwin M.

I build backends and mobile apps that don't fall over when real users show up. Plan Sync: 7,000 monthly users, 76% latency cut. Vettam AI: vector search 15ms → 6ms, deploys 40% faster. Merged PRs in the Flutter framework itself. Currently on the IDE team at HackerRank. There are plenty of people here who'll "turn your vision into reality." If you want a system that's still running cleanly a year after launch, keep reading. WHAT I DO • Backends that scale – FastAPI, Django, Postgres, Supabase, Firebase. Schema, API, infra, deploys, monitoring. I own the whole thing. • Flutter apps for iOS, Android and web – from someone who's fixed bugs inside Flutter's own Material library. • Performance rescue – slow APIs, heavy queries, long cold starts, flaky CI. I find the bottleneck and show you before/after numbers. • AI search – vector search with FAISS and Milvus, wired into your product properly, not bolted on. • CI/CD and cloud – Docker, GitHub Actions, AWS, GCP. RECEIPTS • Plan Sync – university scheduling platform. Lead engineer from day one, now at 7K MAU. The caching layer cut latency 76% and has held for over a year. • Vettam AI – founding backend engineer. 20+ table Postgres schema, CI/CD on AWS, FAISS → Milvus migration. Shipped the MVP in two months; per the founder, it's held up through every release since. • Shanghai Global CRM – solo build (Flutter Web + FastAPI), working directly with the CEO. Replaced a fragile Sheets workflow and cut record errors by 60%. • MySanji – hyperlocal grocery app. Cold start 5s → 1.2s on a lean serverless Firebase + Node backend. HOW I WORK • An honest call on scope in our first conversation, including "you don't need that yet." • A written plan with milestones before any code gets written. • Updates you never have to chase: what shipped, what's next, what's blocked. • Tested, documented code your next engineer won't curse me for. NOT A FIT IF • You're looking for the cheapest bid. • You want someone who agrees with everything. Tell me what you're building and where it's stuck. I'll tell you straight whether I can help. Best, Delwin