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Harsh Vashistha

I build digital products that people actually want to use.

Over the past 4 years, I've gone from crafting UI components at OYO to co-founding SwitchZy—an AI job matching platform that's helping hundreds of users find their dream roles. Along the way, I've learned that great software isn't just about clean code; it's about solving real problems elegantly.

My journey:

->Currently building SwitchZy from scratch—handling everything from FastAPI backends to Next.js frontends to DevOps

-> Founding Engineer at Algotest (YC 2022)—converted their entire web platform to mobile and built hybrid architectures

-> Built a complete employee engagement app at SchbangQ using React Native

-> Shipped revenue-driving features at OYO that generated $64k annually

What I love most is the 0-to-1 phase—taking an idea and turning it into something tangible. I'm comfortable jumping between frontend animations, backend APIs, CI/CD pipelines, and everything in between.

I believe the best products come from understanding both the technical constraints and the user's needs. That's the lens I bring to every project.

Always excited to chat about startups, technical architecture, or that one bug that's been haunting you for days.

  • Role

    Full-Stack & AI Developer

  • Years of Experience

    4 years

  • Professional Portfolio

    View here

Skillsets

  • AWS
  • SQL
  • React-native
  • Postgres
  • Node.js
  • Nextjs
  • LangChain
  • Kubernetes
  • Grafana
  • FAISS
  • Docker
  • Django
  • Cron
  • CI/CD
  • Firebase
  • Tailwind
  • react
  • LangGraph
  • MongoDB
  • FastAPI
  • webpack
  • Redis
  • Kafka
  • Java
  • HTML
  • CSS
  • Python
  • Git

Professional Summary

4Years
  • Mar, 2026 - Present 5 months

    Full-Stack & AI Developer

    Freelancer
  • Apr, 2025 - Feb, 2026 10 months

    Founding Engineer

    Algotest
  • Jun, 2024 - Mar, 2025 9 months

    Senior SDE

    SchbangQ
  • Jul, 2022 - May, 20241 yr 10 months

    Software Developer

    OYO

Work History

4Years

Full-Stack & AI Developer

Freelancer
Mar, 2026 - Present 5 months
    Architected AI-driven job platform with RAG pipelines for semantic job-profile matching across multiple job boards. Tech used: Python, FastAPI, Next.js, PostgreSQL and Generative AI + vector search for personalized recommendations. Built an agentic AI-powered Finance CRM using LangGraph-based orchestration with an iterative HITL review. Integrated an LLM gateway (LiteLLM) for multi-model routing, fallback, and cost control.

Founding Engineer

Algotest
Apr, 2025 - Feb, 2026 10 months
    Contributed to a config-driven notification system for promotional and subscription campaigns, enabling dynamic scheduling of email/SMS and in-app alerts via Kafka-based pipelines. Engineered and maintained a shared hybrid codebase across Next.js web app and mobile repo, reducing duplicate logic by 40% and accelerating feature delivery. Rebuilt the web-based trading platform into a high-performance React Native mobile app, optimizing real-time market data rendering to maintain less than 300ms UI update latency while handling 200+ live tickers updating every second under peak trading loads.

Senior SDE

SchbangQ
Jun, 2024 - Mar, 2025 9 months
    Built a React Native Employee Engagement app (Android, iOS) for Q Group (Swedish conglomerate) with Google Sign-In SSO, push notifications, dynamic multi-theme engine, offline-first sync and animations. Delivered Actify, a full-stack social-action platform for MARD (Farhan Akhtars initiative against gender violence); shipped end-to-end in 3 weeks using Nodejs, MongoDB, Firebase, Next.js.

Software Developer

OYO
Jul, 2022 - May, 20241 yr 10 months
    Drove microservice consolidation and deprecated 3 services via Grafana/APM analysis, saving $6500/month in infrastructure costs. Migrated PostgreSQL databases, running on different self-managed servers with low CPU and memory utilization, onto a single RDS server using Azure DMS pipeline. Monthly saving: $1000. Improved API response time by 20% on oyoos.com via Redis caching, multi-threading and removing redundant calls.

Major Projects

2Projects

VPOST

    Developed a comprehensive platform for students to share their thoughts and ideas, utilizing advanced technologies and design principles to deliver an exceptional user experience. Features include authentication, profile creation and updates, and post creation, liking, and commenting.

Fake Product Detection

    Used fully disclosed smart contract information to prove the legitimate source of the business. Technologies used include Metamask, Truffle, Reactjs, Solidity, and Ganache.

Education

  • B.Tech (Computer Science)

    Jaypee Institute Of Information Technology (2022)