(01) Behind HS
Hi, I'm Hansraj.I am HS.
Hansraj SainiJaipur, India
I'm a product engineer from Jaipur. Since 2023 I've designed, built and launched web and mobile products, including a US brokerage app on iPhone and Android.
HS is just me, so the person on your call is the person reading your code. I fix apps that AI tools started, build new ones from an empty repo, and stay through launch.
- merged PRs in six months on my last product
- 225+
- merged PRs in six months on my last product
- AI agents in production
- 16
- AI agents in production
- platforms shipped for Unlok: iOS, Android, web
- 3
- platforms shipped for Unlok: iOS, Android, web
(02) The story
Shipping since 2023.From first commit to project lead.
- 2023
First line of production code
Frontend intern · PathCreators
Frontend intern at PathCreators in Hyderabad. Built an AI-assisted labelling tool that made image annotation about 25% faster.
- 2024
Intern to full-time in a month
Software engineer · Instient
Joined Instient and became the primary engineer on client products. Built the Unlok trading app for iPhone and Android from scratch, and the Flyku MVP.
- 2025
Inside a US fintech
Software engineer · Kupa (Unlok)
Software engineer at Kupa (Unlok), working with the founders and CTO on the systems that keep every account's money and shares correct.
- 2026
Leading, and building for clients
Project lead · Unlok Insights, then HS full time
Led Unlok Insights with a team of three. Now HS is my full-time work: fixing and building products for clients in India and the US.
B.Tech in Computer Science, Malla Reddy Engineering College. I work in TypeScript, React Native, Next.js and PostgreSQL.
Résumé(03) How I work
Four rules I keepon every project.
- R/01
You talk to the person fixing it
No account managers, no handoffs. The person on the call is the person reading your code.
- R/02
A working build every week
You see progress in the product itself, not in a status report.
- R/03
Keep what works
Your product is the starting point, not something to throw away. I fix it rather than rewrite it wherever I can.
- R/04
It has to work, not just compile
Done means it holds up with real users: sign-ups, payments, a busy day and Google.
(04) Working together
I'm in Jaipur.It works from anywhere.
Where I am
Jaipur, India
India Standard Time, UTC+5:30. I work over video and in writing, in English or Hindi.
Overlap
Calls 7am to midnight
I take calls from 7am to midnight India time. That covers the whole UK and European working day, and US mornings up to about 2:30pm Eastern.
Between calls
A build every week
You see progress in the product itself, not in a status report. Questions go to email or WhatsApp, and I reply within a day.
Done it before
With a US team in 2025
At Kupa, a US fintech, I worked with the founders and CTO from India, on the systems that keep every account's money and shares correct.
Want the details first? Here's how a project runs, step by step.
How a project runs