Harsh Keshari
Software Engineer
I build software. That's what I am.
Founding Engineer at Experiment Labs — shipped 10 production microservices across AI, payments, auth, and product; built the recommendation engine that became a primary revenue driver.
Also building Crelyzor — an all-in-one productivity SaaS for solo professionals, live in production with billing, AI meeting intelligence, and scheduling.
Open to full-time SWE roles
Live in Production
Crelyzor
All-in-one productivity SaaS for solo professionals — replaces HiHello (cards) + Cal.com (scheduling) + Otter.ai (meeting AI) + Todoist (tasks). Live with billing, AI meeting intelligence, and scheduling.
Experience
Founding Engineer
Nov 2024 - Present
- ◦Shipped 10 production microservices across ExperimentLabs' edtech platform — core (Auth, CRM, Payments, Notifications), AI services (Recommendation Engine, Smart Meeting Assistant, AI Interviewer), and product modules (Internship Portal, Evaluator, Sales Ops Dashboard).
- ◦Designed the central SSO/identity service (92 Prisma models, 85 routes) powering all services — refactored permission model from 93 → 38 across 6 categories; multi-tenant org isolation via tenant-keyed queries.
- ◦Engineered Smart Meeting Assistant — counselor–student session recording with AI summaries auto-pushed to student career roadmaps; Bull + Redis queues + Railway worker handle batch transcription across orgs.
- ◦Built AI Interviewer — Google Cloud Speech-to-Text, Vertex AI for question generation, video transcoding via Cloud Tasks.
- ◦Built recommendation engine using OpenAI embeddings + Pinecone vector search for AI-driven student career suggestions, which became a major revenue stream.
- ◦Engineered multi-channel notification service — email, SMS, WhatsApp — with Redis-backed state, scheduled cron reminders, and rate limiting.
- ◦Integrated Razorpay payment processing with webhook reconciliation, retry logic, and credit/subscription management.
- ◦Migrated infrastructure from AWS Lambda to EC2, eliminating timeout errors across all long-running operations.
Backend Developer
Sept 2024 - Nov 2024
- ◦Built the MVP backend for a hotel booking & management platform from scratch using Node.js and Express.
- ◦Designed and shipped REST APIs for room booking, availability management, and authentication.
Open Source Contributions
Nov 2023 - April 2024
- •Led the LaCE quality team at Oppia — managed contributor onboarding, task assignments, and code reviews across all user-facing features.
- •Shipped 10 merged PRs in Python and AngularJS — admin acceptance tests, topic editor migration, UI fixes, and e2e test coverage.
- •Completed a $150 bounty — fixed a critical search bar modal focus issue in the documentation site.
Projects
Nexus
Maintained- •Built a live contest portal used by 300+ students for real-time coding competition participation and standings on CodeChef.
- •Shipped both a student portal (enrollment, live standings) and a secure admin portal (profile management, data scraping, result generation).
- •Implemented web scraping to pull real-time user data from CodeChef and JWT-based auth via Passport.js.
Bitcoin Wallet CLI
- •CLI tool to manage Bitcoin wallets, addresses, and transactions — wallet creation, address generation, balance checking, and transaction history.
- •Integrated Blockcypher API for real-time Bitcoin data.
This journey continues... 🚀