A product engineering studio. We build and ship software across every stack — from zero, from a prototype, or from a live platform.
What we do
From zero, from a prototype, or from a live platform — in whichever stack your team already lives in. The four services:
You have a spec, a design, or just an idea. We architect the stack, ship the MVP, and iterate to product-market fit. Handoff-ready the day you're ready to take it in-house.
An existing scaffold — Lovable, Cursor, GPT-Engineer, or your own weekend build — turned into code that survives real users, real load, and a compliance review.
Something is in production and it's cracking. Auth is fragile. Queries are timing out. Releases break more than they fix. We come in, own the merge queue, and stabilise the release cycle.
You need to launch in a country your team hasn't operated in — foreign compliance, local payment rails, unfamiliar telecom. We've shipped in the US, EU, West Africa, and the Caribbean.
What we don't do
Being clear about what we won't do makes what we do more believable. If any of the below is what you need, we'll happily refer you to someone who does it well.
Selected work
Stack: Java · Spring Boot · PostgreSQL · React
Quote, issue, finance, renew and settle motor and non-motor policies across two African markets on one core. Owned the insurer-integration layer and the renewals subsystem rewrite. Live traffic through both markets. Read the case study →
Stack: Laravel · MySQL · Socket.IO · React · native iOS & Android
Food delivery, school meals, parcel service and ride-hailing on one dispatch engine. Led the rideshare vertical end-to-end — fare engine, SSO handoff, super-admin portal. Shipped across two countries and two languages. Read the case study →
Stack: Flutter · NestJS · PostgreSQL · nRF Cloud · Twilio
Wearable pet collar with cellular fallback. SOS alerts fan out to caregivers over SMS and push. Sole author across mobile, backend and cloud provisioning.
Stack: Next.js 15 · React 19 · TypeScript · Prisma · MySQL · React Native 0.81 · Stripe
A membership-based booking platform for a golf simulator club across three Texas locations. Tiered membership rules, real-time bay availability, waitlist management, multi-role admin. Sole author across web, mobile, backend, database, and auth. Read the case study →
How we work
Not the code review. Not the sprint. The release. If it ships broken, it's our name on it.
From day one we work inside your repo, your CI, your monitoring. No side-channel Slack, no separate JIRA project.
If you're about to ship something that will page you at 3 AM, we say so — even when the meeting has already agreed.
We don't come in with a favourite framework. If your team runs Laravel, we ship Laravel. If it's Java, we ship Java.
About
Polymit is run by Rajat Manhas — a full-stack engineer who spent years in the merge queue for insurers, food-delivery platforms, IoT hardware, payroll systems and social networks.
Same pattern every time: the code shipped when someone actually owned the release.
Polymit is that person, as a company.
Contact
Tell us what stack you're on, and what's in your way. We reply within one working day.