Software Engineer with 3+ years of experience in building SaaS products

Shivansh Shekhar  • Peerlist

Self-hostable enterprise feature flag service with real-time flag propagation via SSE + Redis Pub/Sub — eliminating per-request network round-trips to the flag server. Built with Fastify, PostgreSQL/Drizzle, Redis, and Turborepo. Features a custom recursive rule engine, consistent hashing for sticky rollouts, and optimistic locking for conflict-safe concurrent edits. Shipped a TypeScript SDK with three-tier fallback logic, a Next.js management dashboard with two-level RBAC, and a Fumadocs documentation site. Tech: TypeScript · Fastify · PostgreSQL · Redis · SSE · Docker · Turborepo

Pulse — Feature Flag Service

https://barkeep.onrender.com/ 1. Crafted a responsive web application for exploring 500+ cocktail recipes using React and Cocktail DB API. 2. Formulated advanced search algorithm with filtering by ingredients, type, and alcohol content. 3. Generated 500+ visitors in the first month with an average session duration of 4.5 minutes.

Barkeep

1. Conceptualized and built a secure, temporary file storage web application enabling users to share files among devices without account creation. 2. Executed end-to-end encryption protocol for all file uploads and configured automatic 5-day expiration using AWS Lambda. 3. Maintained 90% uptime while scaling to 150+ active users within the campus community with zero security incidents.

CloudJot

1. Engineered a full-stack online cab booking platform for a business integrating Google Places API for location selection and Google Maps API for distance calculations, projecting a 75% increase in customer bookings. 2. Implemented advanced state-specific fare computation by mapping vehicle rates to state data stored in the application’s database. 3. Planned a streamlined booking confirmation flow, notifying the business’s ride handler for customer coordination.

SaiCabs

Link: https://www.npmjs.com/package/@define-js/core Open-source TypeScript codegen library that generates Drizzle ORM schemas, typed repositories, Fastify validators, and OpenAPI 3.1 specs from a single resource definition — eliminating schema drift across DB, API, and docs layers. Features a multi-adapter architecture and a CLI with project scaffolding and granular generation commands. Tech: TypeScript · Drizzle ORM · Fastify · OpenAPI 3.1 · CLI tooling

Define — Type-safe Resource DSL

Link: https://supergate.live Production-grade LLM API gateway unifying OpenAI, Anthropic, Google, Cohere, and Mistral behind a single OpenAI-compatible endpoint. Built with Fastify, TypeScript, PostgreSQL/pgvector, and Redis — featuring tenant-isolated RBAC, semantic caching with HNSW indexing, sliding-window rate limiting, per-provider circuit breakers, and PII masking. Shipped a TypeScript SDK, Next.js analytics dashboard, and a full Docker Compose production stack on DigitalOcean with GitHub Actions CI/CD. Estimated ~40% reduction in redundant LLM API costs on repeated prompts Tech: TypeScript · Fastify · PostgreSQL · pgvector · Redis · Docker · OpenAI API · Anthropic API