Sudeep B D · Software engineer · Bengaluru
Backends, payment flows and on-chain protocols, from NestJS and Kafka to Uniswap v4 hooks. Two years in production, six hackathon prizes, and a recovery path in every payment flow I've shipped.
Four things I build
Most of my days are NestJS microservices on Kubernetes with PostgreSQL, Redis and OpenSearch. I own features from the data model to the production fix, like moving eight services onto PgBouncer when connections ran out.
Two years of production work, a lot of weekends at hackathons, and most of it public on GitHub.
A partially active AMM on 1inch Aqua and Uniswap v4. Arbitrageurs reach only a fraction λ of reserves each block; the rest earns yield in Morpho. A mainnet-fork replay cut LP losses to arbitrage by 17.6% to 19.3%.
Cross-chain swaps between Polygon and NEAR with hashed timelocks and the 1inch Fusion+ SDK. Either both sides settle or both refund.
Turns a wallet into a market maker on Uniswap v4 with nothing deposited. Fork evidence: a $50k EUR to JPY cross at 15 bps versus 158 bps through today's two-hop route.
Backend-heavy full stack on a multi-tenant EV charging platform: payments, roaming, event pipelines, observability.
ERC20 token on Polygon mainnet, a Magic Link dashboard and a Chrome extension reward engine.
Web application security testing and exploitation.