sh42.me/pf/
check out my resumé

hi i'm shahank42, a

fullstack web dev

+ pro keyboard smasher

i write performant and scalable software. been writing code ever since i got access to a computer back in 2009.

need someone to help you build the next biggest thing? i've got your back.

Typescript Icon Round Streamline Icon: https://streamlinehq.com Typescript
React
Svelte/SvelteKit
Next.js
Hono Streamline Icon: https://streamlinehq.com Hono
Postgresql Streamline Icon: https://streamlinehq.com PostgreSQL

who am i?

the web is the most accessible platform out there. i build for the screens people see their apps in, and also make the servers that handle stuff behind the scenes.

databases, servers, query optimizations— i do it all. from cleeeean UIs to dynamic and peformant components. need to integrate your backend with your frontend? i'm your guy.

what sets me apart?

i'm really good at what i do. i've done internships, freelance work, won hackathons all of which have helped me vastly to improve my skills.

professional experience

currently working with one of the most cracked teams in the world!

july 2025 - present

Heizen (Hyd, India)

one company, two arcs: intern to full time

august 2026 - present

sde full time

  • Heizen Studio: AI-native product management and SDLC platform
    • built a Google Meet bot that joins calls, records, transcribes and summarizes meetings, hardening it against bot detection to raise successful joins from 10% to 60%
    • cut CPU by 17% and GPU by 50%+ in the Electron-based Heizen Meets app by killing redundant re-renders and optimizing animations; shipped on-device STT transcription alongside cloud providers
    • built LLM agent infrastructure used across Studio and Helix: platform-integrated tool calling, browser automation, document ingestion into LLM-backed knowledge bases, and context management for 300k+ token workloads used by 10+ teams
  • Internal tools: used company-wide
    • built Atlas, an interactive company knowledge graph (ReactFlow) of domain-specific knowledge, adopted by employees throughout the company
    • built Accounts, a finance tool that reconciles bank statements and RazorpayX ledgers into MIS sheets and AP/AR reports, saving the accounting team 16 hrs/month

promoted to sde in aug 2026

july 2025 - august 2026

sde intern intern

  • PsyFi: personal finance and investment tracker (shipped to production, primary engineer)
    • owned and built most of the web app and backend: XIRR, capital-gains and volatility engines, plus multi-tenant Plaid integration
    • provisioned production environments on AWS via ECS with automated CI/CD and unit tests; contributed to SOC2 technical controls
    • cut DB query time by up to 92% on transaction mapping queries and improved Next.js load times with React Server Components; added SEO, taking bounce rate from 40% to 20%
  • Jetfuel: AI website builder for construction companies
    • supercharged the AI feedback loop for progressively enhancing generated websites
    • integrated Google Ads and Umami Analytics APIs to ship monetizable websites directly from the app
    • built an AI website editor (v0/Lovable-style) using Sandpack's API with automatic error fixing

october 2024 - march 2025

remote backend intern @ Aarish Technologies Inc. (QC, Canada)

  • built a video streaming and storage pipeline for a military mesh network app, playing around with fastapi, ffmpeg, and gstreamer to get the latency and bandwidth just right
  • cooked up a custom udp packet encoding scheme to get esp32 nodes talking reliably on shaky networks
  • put together a full-stack app with react and fastapi for audio classification, hooking it up to tensorflow

june 2024 - september 2024

freelance web developer @ AI-Recovery and High Value Services (WB, India)

whipped up a 7-page static site for an insurance startup and hosted it on cloudflare pages, then set up a slick cloudinary solution to serve their images super fast

july 2026

btech, computer science and engineering @ Kalyani Government Engineering College (Nadia, India)

graduated 2026. top 1% national ranking in Mathematics (AISSCE and AISSE). 1st at Diversion 2k25, runner-up at Statuscode1, national finalist at Smart India Hackathon 2023.

stuff i made

i love building cool stuff and trying out new technologies. from simple static sites to robust fullstack solutions, i've built a lot of things. here are the ones i'm really proud of.

side project
hackathon
freelance
TextPilot is a self-hostable and soon installable WhatsApp client with an AI Co-pilot!
Open Link Source Code