01
End-to-end ownership
Designing the schema, writing the API and shipping the UI for one feature, instead of three people handing it across layers.
Senior / Staff
Hire senior full-stack engineers who own features end to end
Full-stack engineers who take a feature from database migration to accessible UI — schema, API, tests and release — so your product managers write outcomes, not a ticket for every layer.
Role profile
What we look for in a Senior Full-Stack Engineer
Seniority and experience are agreed in the proposal, and you interview every engineer before they start. These are the skills that interview should test.
02
Performance habits
Indexes that match the queries, no N+1 loops, and pages measured on a mid-range phone rather than a developer laptop.
03
Working from requirements
Turning a product brief into small, reviewed pull requests with tests — and asking the awkward questions before building.
Typical work
What a Senior Full-Stack Engineer typically works on
Examples of the scope this role is hired for. Your statement of work sets the actual deliverables and how they are accepted.
- 01SaaS MVPs scoped to a fixed first release and shipped in weekly increments
- 02Stripe subscription billing with a self-serve customer portal
- 03Multi-tenant organizations with SAML single sign-on
- 04Real-time analytics dashboards over WebSockets and PostgreSQL
Stack and tools
What this role works with day to day. Tell us your stack and we’ll say plainly which parts we can staff.
- Next.js
- TypeScript
- React 19
- Node.js / Go
- PostgreSQL
- AWS
Technology guides
Related service
Custom software developmentA system built around your workflow, shipped in weekly increments — not a rewrite that lands a year late.
How hiring works
Four steps, agreed in writing before anyone starts
01
Tell us the role
The stack, the seniority you need, the hours you want covered, and any certifications the work requires. We reply within one business day.
02
We propose engineers
A written proposal sets out who we'd put forward, their seniority and experience, the scope, and the terms. If we can't staff the role well, we say so.
03
You interview every engineer
Nobody starts on your codebase until you've interviewed them and agreed. Use the skills on the role page as your interview checklist.
04
Working arrangements go in the SOW
Working-hours overlap is agreed for each engagement and written into the statement of work — the shared window, who shifts hours, and how handoffs work outside it.
QuantmHill provides development teams from India for Indian startups and SMEs. Role profiles describe project capabilities; availability is confirmed for your engagement. Our team works on India Standard Time. Project working hours, availability and handoff responsibilities are agreed before kickoff.
Need specific certifications? Tell us at the start and we'll confirm whether we can staff to that requirement before you sign. There are no recruiting fees.
FAQ
Questions about hiring a Senior Full-Stack Engineer
Answered the way we would on a call. If yours isn’t here, send it — we reply within one business day.
It depends on your codebase and how quickly access is set up. We plan the first week with you — environment, a small first ticket, a reviewer on your side — and the start date is agreed in the proposal after you've interviewed the engineer.
Yes. Unit and integration tests go in with the feature, and Playwright covers the critical user journeys. Coverage targets are agreed with you; we'd rather test the paths that matter than chase a percentage.
Related roles
Similar and adjacent roles
Add a Senior Full-Stack Engineer to your team
Tell us the stack, the seniority you need and the hours you want covered. We reply within one business day, and you interview every engineer before they start.