Senior full-stack developer for startups Senior Full-Stack Engineer - Startup Product Lead

I help SaaS founders stabilize, scale, and ship faster

Senior full-stack product engineer with 4+ years owning production SaaS systems — from MVP to scale — across web, backend, and mobile.

  • Performance-first architecture for product-led growth.
  • Full ownership from MVP to scale with clean, reusable systems.
  • UX decisions aligned with business outcomes.
Up to 60% faster load times on performance-critical pages
~3 weeks MVP launches for focused scopes
Improved engagement & conversions through UX + performance fixes
Hasnain Qureshi portrait
Based in Pakistan - Working with global startups
About

Building products that scale with your startup

I build and own production SaaS products so founders can move faster without worrying about fragile systems.

I’ve worked as a Technical Lead and Senior Engineer on live platforms used by real users — from early MVPs to scaling products — where stability, speed, and clean architecture matter.

I’m typically brought in when the product is live but development has slowed, the codebase grew fast and became fragile, or founders need someone to own delivery, not just execute tickets.

60% reduced load times
3 weeks MVPs launched
Growth improved engagement and conversions
Stack

Tools I use to build and own production SaaS

Frontend

  • React.js
  • Next.js
  • Modern CSS and Tailwind
  • Performance optimization

Backend

  • Node.js
  • Express
  • MongoDB
  • REST and GraphQL APIs

Mobile

  • React Native
  • Cross-platform apps
  • App performance tuning
  • Native integrations

Cloud and Tools

  • AWS
  • Firebase
  • DigitalOcean
  • Git and CI/CD
Services

How founders work with me

SaaS Product Ownership

Full responsibility for delivery, stability, and scale.

MVP → Production Builds

Clean architecture from day one, no rewrites later.

Stabilization & Scaling

Fix fragile systems and restore development velocity.

Technical Consulting

Architecture reviews, scaling decisions, and roadmap alignment.

Process

A clear path from idea to scale

Senior delivery steps that keep founders aligned and shipping fast.

01

Discovery + Scope

Define goals, KPIs, and risks so build time stays focused.

02

System Design

Architecture, data model, and UX flows ready for scale.

03

Build + Iterate

Rapid delivery with milestones, demos, and tight feedback loops.

04

Launch + Optimize

Performance tuning, analytics, and conversion improvements.

Tools

Technologies I ship with

Design systems, frontend frameworks, backend services, and cloud tooling used across my builds.

React
Next.js
Node.js
MongoDB
GraphQL
TypeScript
Tailwind CSS
Firebase
AWS
Docker
Postman
Redis
PostgreSQL
MySQL
WordPress
Vercel
Netlify
GitHub Actions
Projects

Selected product work

Reviews

What clients say

Selected feedback from Fiverr and past clients - real results and reliable work.

Client review 1
Client review 2
Client review 3
Client review 4
Client review 5
Resume

Snapshot of senior capabilities

Core Strengths

  • Full-stack delivery across web and mobile
  • Performance optimization and scalable architecture
  • Product UX decisions tied to business outcomes
  • Mentoring teams and leading delivery

Industries + Product Types

  • SaaS platforms and dashboards
  • Conversational products and lead systems
  • Startup MVPs and go-to-market builds
  • Consumer mobile apps

Availability

Open to select startup engagements and long-term product builds.

Full-stack builds Consulting Scale-up support
Let's build

Have a live SaaS product that’s slowing you down?

I help founders regain velocity by owning the tech end-to-end.

Experience

Senior product engineering experience

Technical Lead - Vurks

Led end-to-end technical direction from concept to launch, designing scalable architectures and mentoring developers.

Senior Software Engineer - ChatKnot

Built real-time systems, scalable APIs, and multi-tenant platforms powering conversational products.

Web Developer - Fiverr

Delivered fast, reliable solutions, building long-term client trust through speed and quality.

Contact

Let us build something great

Tell me about your product, goals, and timeline. I respond fast and focus on practical next steps.

Accent