Sumair Qaisar
// full-stack engineer · mern · saas
Full-stack MERN engineer specializing in production APIs, multi-tenant dashboards, and system design. I ship features that survive real traffic — from database schema to deploy pipeline.
stack
// GET /api/users/:id
export async function handler(req: NextApiRequest, res: NextApiResponse) {
const session = await auth(req)
if (!session) return res.status(401).end()
const user = await User.findById(req.query.id)
.populate('org')
.lean()
if (!user) return res.status(404).end()
return res.json(serialize(user))
}uptime
99.98%
p95
184ms
req/min
12.4k
What I Build
Outcomes, not deliverables — products that ship, scale, and survive their second year.
01
Multi-tenant products billed and ready for paying customers.
02
Operational tools that turn raw data into clear decisions.
03
Versioned, documented endpoints designed for production load.
04
Next.js + Node systems shipped end-to-end on managed infra.
// full-stack, end to end
One engineer across the whole request lifecycle — from the component tree down to the query plan.
Featured Work
Production systems built end-to-end — from schema design to deploy pipeline.
Problem
Sales teams juggle spreadsheets, email threads, and ad-hoc tools — losing pipeline visibility and revenue.
Solution
A multi-tenant CRM with role-based access, automated lead scoring, and a real-time activity timeline backed by a normalized event store.
Problem
Product teams need event analytics without the price tag and lock-in of hosted vendors.
Solution
A self-hosted, queue-backed event ingestion pipeline that processes 10M+ events/day with sub-second dashboard queries via materialized rollups.
Problem
Warehouse staff lose hours reconciling stock between point-of-sale, Shopify, and back-office systems.
Solution
A real-time inventory sync layer with conflict resolution, audit logging, and barcode-driven mobile workflows.
// approach
How I Approach the Stack
Four commitments that shape every system I ship.
// let's build
Open to senior full-stack and SaaS engineering roles, plus selective contract work for ambitious products.
