01
Backend Architecture
Domain-driven services, event pipelines, and data models that survive the third rewrite. REST and GraphQL APIs designed for consumers, not for the ORM.
HASSNAIN
Available
for select projects · Q3
6+years shipping
production code
production code
Certified Master
Backend Development · UK LRN Institute
99.98%uptime across
shipped systems
shipped systems
Full-stack developer architecting resilient backends and interfaces people actually enjoy using. From schema to shader — I own the whole stack.
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TypeScript✦Node.js✦React✦Next.js✦PostgreSQL✦Docker✦AWS✦GraphQL✦Redis✦Python✦
Microservices◆Event-driven◆Kubernetes◆CI/CD◆Prisma◆NestJS◆WebSockets◆Kafka◆Terraform◆
01 — About
I build software the way infrastructure should be built — quietly reliable, ruthlessly fast, and simple enough that the next engineer says thank you.
Hassnain
Full-Stack Developer · Backend Architect
Certified Master in Backend Development — UK LRN Institute
Six years in, I've learned that the hard part was never the framework. It's the boundaries — where a service ends, where a transaction commits, where a user's patience runs out. That's the work I care about.
I take products from a whiteboard scribble to a deployed system with observability, tests, and a CI pipeline that doesn't wake anyone at 3am. Backend is where I go deepest: domain modelling, event-driven architecture, query plans, and the unglamorous discipline of making things idempotent.
On the front, I build interfaces with the same rigour — typed end to end, accessible by default, and animated only where motion carries meaning.
- Based inPakistan · Remote worldwide
- FocusDistributed systems & product engineering
- Working hoursOverlaps EU & US-East
0Years experience
0Projects delivered
0Happy clients
0Retention rate
02 — Capabilities
Everything between the database and the pixel.
One person, the full pipeline. No handoff gaps, no "that's a backend problem".
02
Frontend Engineering
Typed React and Next.js apps — server components, streaming, and interfaces that feel instant on a mid-range phone.
03
APIs & Integrations
Stripe, payment rails, third-party webhooks and the retry logic nobody writes until it breaks. Idempotent by design.
04
Cloud & DevOps
Containerised deploys, infrastructure as code, blue-green releases and dashboards that answer questions before you ask.
05
Performance
Query plans, N+1 hunts, caching layers and cold-start surgery. Measured before, measured after — no vibes.
06
AI & Automation
RAG pipelines, embeddings, streaming LLM endpoints and internal tooling that quietly removes hours of manual work each week.
03 — Selected work
Systems that went live
and stayed up.
A slice of recent builds. Numbers are from production, not from a pitch deck.
01
Nebula Commerce
Headless commerce platform for a multi-region retailer. Rebuilt the catalogue service, cut checkout latency by 68%, and moved 1.2M SKUs without a minute of downtime.
68%faster checkout
1.2MSKUs migrated
02
Vaultpay Infrastructure
Payments and ledger core for a fintech. Double-entry accounting, idempotent webhooks, and a reconciliation engine that closes the books in seconds instead of hours.
0reconciliation breaks
4k/speak throughput
03
Helios Analytics
Real-time analytics surface streaming millions of events a day. WebSocket fan-out, pre-aggregated rollups, and a dashboard that renders under 90ms on cold load.
90mscold render
8Mevents / day
04
Signal AI Assistant
RAG assistant over 40k internal documents. Hybrid retrieval, streaming responses, citation grounding, and an eval harness so quality regressions get caught in CI.
40kdocs indexed
3.4×support throughput
05
Orbit CRM
Multi-tenant SaaS with row-level isolation, granular RBAC, and a plugin system that lets customers extend the data model without a deploy.
120+tenants live
99.98%uptime
04 — Toolkit
Sharp tools, chosen on purpose.
Languages
TypeScriptJavaScriptPythonGoSQLPHP
Backend
Node.jsNestJSExpressDjangoFastAPILaravelKafkagRPC
Frontend
ReactNext.jsVueTailwindFramer MotionThree.js
Data
PostgreSQLMongoDBRedisClickHousePrismapgvector
Infrastructure
AWSDockerKubernetesTerraformGitHub ActionsVercelNginx
Practice
TDDDDDObservabilityCode reviewAccessibility
05 — Journey
Six years, one direction.
2024 — Now
Lead Full-Stack Developer · Independent
Partnering directly with product teams on payment infrastructure, real-time analytics and AI-assisted tooling. Owning architecture, delivery and the on-call rotation.
2022 — 2024
Senior Backend Engineer · SaaS Product
Broke a monolith into services without a rewrite freeze. Introduced contract testing, structured logging and a deployment pipeline that dropped release time from hours to eight minutes.
2021 — 2022
Certified Master in Backend Development · UK LRN Institute
Formal certification covering distributed system design, security, data modelling and production operations — the theory behind what production had already taught me.
2020 — 2021
Full-Stack Developer · Agency
Shipped twenty-plus client products across commerce, logistics and health. Learned to scope honestly, ship weekly, and write code the next developer can read.
06 — How I work
A short loop, repeated well.
01
Understand
Constraints, users, and the failure modes that actually matter. I ask the uncomfortable questions early.
02
Architect
A diagram, a schema and a written trade-off list before a single endpoint exists.
03
Ship
Thin vertical slices behind flags. Something real in staging within the first week.
04
Harden
Load tests, dashboards, runbooks. The part most people skip, and the reason mine stay up.
07 — Contact
Have something worth building? Let's talk.
hello@hassnain.devResponse timeWithin 24 hours
EngagementsContract · Retainer · Advisory
TimezonePKT · UTC+5
StatusOpen for Q3 2026