My Projects

A showcase of engineering excellence, from distributed systems to AI-driven tools.

Technical Stack

EduScale

A premium, all-in-one engineering learning platform featuring personalized roadmaps, real-time coding battles, and comprehensive placement preparation.

Next.jsReactTypeScriptTailwind CSSPrismaPostgreSQL

Showcase Project

DevTrack

A premium developer intelligence dashboard that track coding progress, analyzes learning patterns, and provides actionable insights for continuous improvement.

Next.jsTypeScriptPrismaPostgreSQLSupabaseSupabase Rea...

Vibe Testing (ContextQA)

AI-powered web testing Chrome extension built at ContextQA (shipped during my first 2-3 months on the team) — real-time UI testing with AI-generated bug scenarios, screenshot capture, and chat-based fix workflows.

Next.jsReactTypeScriptTailwind CSSChrome Exten...AI/ML

AxeTos (ContextQA)

WCAG A/AA/AAA accessibility testing Chrome extension built at ContextQA (shipped during my first 2-3 months on the team) — automated auditing with precise DOM locators, violation categorization, and persistent script-injection fixes.

Node.jsNext.jsReactTypeScriptTailwind CSSAccessibility

CodeSenseiSearch

Semantic code-search monorepo — Next.js + NestJS deployed on Vercel, Postgres with pgvector on Supabase, BullMQ workers backed by Upstash Redis, embeddings via Gemini.

NestJSTypeScriptPostgreSQLpgvectorGemini Embed...Monorepo

Showcase Project

KhataGO

WhatsApp-first accounting platform. Webhook → Gemini function-calling → idempotent ledger write. Handles transactions, receivables, and reconciliation entirely through WhatsApp chat + receipt photos.

Next.jsTypeScriptPrismaPostgreSQLSupabaseGemini AI

Showcase Project

Redis Battle Demo

A live distributed systems demo: two Node.js instances compete for a Redlock distributed lock every 2 seconds, with the winner broadcasted to all clients via @socket.io/redis-adapter.

Node.jsSocket.io@socket.io/r...RedlockRedis Pub/SubPrometheus

Showcase Project

CareerGlyph

A developer profile platform where skills, projects, and peer endorsements replace static resumes. REST API with JWT auth, compound-key endorsements, and full Swagger documentation.

NestJSTypeScriptPrismaPostgreSQLJWTPassport

Showcase Project

Stripe Payments Demo

Production-grade Stripe integration: webhook signature verification, Redis SETNX idempotency guard against duplicate event delivery, and payment intent creation with exponential-backoff retry. 29 tests covering exactly-once semantics, non-retryable 4xx errors, and concurrent duplicate suppression.

Node.jsTypeScriptStripeRedisExpressJest

Showcase Project

Razorpay Patterns Demo

India-accessible sibling of stripe-payments-demo. Razorpay Standard Checkout end-to-end with webhook HMAC verification, Redis SETNX idempotency, exponential-backoff retry, and client-callback signature verification. 30 tests, live /demo page with Razorpay Checkout.js modal.

Next.jsTypeScriptRazorpayRedisioredisJest

Questions about these projects

Quick answers to what most recruiters and engineering managers ask first.

What projects has Shailesh Chaudhari built?

Shailesh has shipped 10 side projects covering real-time distributed systems (EduScale, redis-battle-demo), AI pipelines (KhataGO with Gemini AI for WhatsApp accounting, CodeSenseiSearch with pgvector semantic search), payment infrastructure patterns (stripe-payments-demo, razorpay-patterns-demo), developer productivity (DevTrack with Supabase Realtime), and developer identity (CareerGlyph). At ContextQA he also shipped two production Chrome extensions — Vibe Testing and AxeTos — in his first months on the team.

Which technologies does Shailesh Chaudhari work with?

Backend: Node.js, NestJS, Express, TypeScript, Prisma, PostgreSQL, Redis, Redlock, Bull, Socket.io with @socket.io/redis-adapter, opossum circuit breakers, prom-client. Frontend: Next.js (App Router), React 19, Tailwind CSS, Redux Toolkit, TanStack Query. Specialties: webhook idempotency (Stripe + Razorpay HMAC verification + SETNX dedup), distributed locking, vector search (pgvector + Gemini embeddings), Chrome extension development.

Is Shailesh Chaudhari open to new opportunities?

Yes. He is currently a Software Engineer at ContextQA (backend of the core QA-automation product — test execution engine, VNC streaming, Playwright/WebdriverIO/LambdaTest orchestration) and is open to part-time and freelance work. Reach him via the contact form at https://shaileshchaudhari.vercel.app/contact or by email at shailesh93602@gmail.com.

Where can I see Shailesh Chaudhari's code?

Most projects are open-source on GitHub at https://github.com/Shailesh93602. Notable public repos: stripe-payments-demo, razorpay-patterns-demo, redis-battle-demo, CodeSenseiSearch, careerglyph, devscale (EduScale). KhataGO and ContextQA's Vibe Testing / AxeTos are proprietary or private.

What is Shailesh Chaudhari's experience level?

About 2.5 years of professional experience. Software Developer Intern at EsparkBiz Technologies (Jan 2024 – Aug 2024), Software Engineer at EsparkBiz (Aug 2024 – Jul 2025) shipping 3 client projects end-to-end, then Software Engineer at ContextQA from July 2025 onwards working on the backend of their core QA-automation product. Institute Rank 1 on GeeksforGeeks with 600+ problems solved.