Ayan Khan

I’m a Full Stack Engineer with 2+ years building and owning end-to-end features at a fintech startup, from PostgreSQL schemas and NestJS APIs to React UIs consuming them. I’m comfortable with the full request lifecycle, async event-driven pipelines, and shipping complex permission-heavy features in production.

At Vericap, I independently implemented 50+ REST API endpoints across core platform workflows, owning query design through service/controller logic in NestJS and TypeORM. I reduced project catalogue latency by 35% (1000ms → 650ms) using Promise.all parallelization and Redis caching with write-through invalidation, and integrated AWS SNS, SES, and Lambda to power communication and document workflows.

I’ve also built an auth-gated investor-facing project catalogue with a custom permission engine for nested JSON link permissions, and improved frontend performance by migrating to a Turborepo monorepo and cutting initial JS bundle size from 1MB+ to under 600kb through auditing, dependency cleanup, and lazy loading. Right now, I’m deepening my backend focus on distributed systems and high-throughput architecture—reinforced by my mini-Kafka, where I achieved 100k+ events/min with sub-5ms p50 publish latency.