Available for Remote Opportunities

Syed Zohaib
Hussain

Senior Backend Engineer · AI Systems · Node.js · PHP · LLM Products

9+ years building production-grade APIs, distributed systems, and backend infrastructure at scale. Currently building AI-integrated platforms and pursuing senior remote engineering roles.

Get in Touch → View Experience

What I Work With

Technical Expertise

⚙️

Backend

PHP / Laravel Node.js TypeScript REST APIs GraphQL Microservices

🗄️

Databases

PostgreSQL MySQL MongoDB Redis Supabase Query Optimization

☁️

DevOps & Cloud

AWS Docker GitHub Actions CI/CD Linux

🤖

AI & LLM Integration

Claude API LLM Products AI Chat Systems Python ETL GitHub Copilot

🖥️

Frontend

React.js Next.js Vue.js JavaScript TypeScript

🔧

Engineering Practices

PHPUnit / Jest Code Reviews Agile / Scrum Clean Code Team Leadership

Where I've Worked

Work Experience

Feb 2025 – Present Toptal

Full Stack Developer

Remote · Client Engagements

Built Python-based ETL pipelines processing 100K+ daily data points with 99.9% reliability, cutting manual effort by 70%.
Designed and scaled backend services and REST APIs for worldwide SaaS platforms within a 45-person remote team, improving system performance by up to 60%.
Deployed and managed services on AWS using Docker and CI/CD pipelines via GitHub Actions.

Aug 2024 – Feb 2025 Waseela

Software Engineer

Karachi, Pakistan

Architected scalable backend APIs (REST/GraphQL) with Node.js and TypeScript for 1M+ daily users; optimized PostgreSQL queries and Redis caching to cut execution times by 35%.
Developed Kisaan — a PERN stack microservices SaaS platform serving 393K+ acres and 219 locations across Pakistan.
Mentored junior developers and led code reviews, improving overall code quality by 40%.

Jul 2022 – Jul 2024 GiveSendGo.com

Software Engineer

Remote

Built and maintained PHP (Laravel) backend systems with RESTful APIs and Stripe payment workflow integrations for a high-traffic crowdfunding platform.
Optimized MySQL queries improving API response times by 25%; applied security best practices for sensitive financial data.
Diagnosed production issues, reducing payment processing failure rates; contributed to CI/CD pipelines.

Feb 2021 – Jun 2022 Planet01

Software Engineer

Karachi, Pakistan

Delivered high-availability Node.js / TypeScript backend solutions ensuring 99.99% uptime for 500K+ users across 500+ production instances.
Mentored 8+ junior engineers, improving team productivity by 35% and cutting onboarding time by 20%.

Mar 2020 – Jan 2021 Tafsol Technologies

Backend Team Lead

Karachi, Pakistan

Led backend architecture with Node.js and PHP, managing a team of 5 engineers reporting to CTO.
Connected 5+ third-party services via API integrations, driving a 20% increase in conversion rates.

What I've Built

Featured Projects

01 / LIVE PROJECT

PM Mastery Academy

AI-integrated e-learning platform built with Claude API and modern backend stack. Features student AI chat support, progress analysis, and LLM-powered learning pathways.

Claude API Node.js AI Chat LLM

Visit Live Site →

02 / PRODUCTION

Kisaan — AgriTech SaaS Platform

PERN stack microservices platform serving 393K+ acres and 204K+ animals across 219 locations in Pakistan. Covers farmer loans, agriculture, finance, and veterinary domains.

Node.js PostgreSQL Microservices AWS

Enterprise Platform

03 / PRODUCTION

GiveSendGo Payment Infrastructure

Backend payment systems for a high-traffic crowdfunding platform — Stripe integrations, financial data security, and PHPUnit-tested payment workflows handling large daily transaction volumes.

Laravel Stripe PHPUnit MySQL

GiveSendGo.com →

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