Abdul Rehman
Sarfaraz
Building scalable web & mobile systems with real-time architectures, clean APIs, and AI integrations that ship to production.
About me
I write code that
actually ships.
I'm a full-stack engineer based in Rawalpindi, Pakistan with a passion for real-time systems, scalable APIs, and AI-powered applications. From ride-hailing apps to multilingual communication platforms, I've shipped production-grade software across diverse domains.
Currently at IR Solutions building MERN stack applications. I specialize in NestJS backends with WebSocket gateways, React/React Native frontends, and integrating cutting-edge AI services — LangChain, OpenAI, Azure AI — into practical, user-facing products.
Career
Work Experience
Full Stack Developer (MERN)
CURRENTIR Solutions· Full Time
Leading full-stack development using the MERN stack. Building and maintaining scalable web applications with a focus on performance and real-time features.
Full Stack Developer
Octaloop Technologies· Full Time
Built and maintained web and mobile applications with a focus on performance and scalability. Skilled in frontend and backend development, creating APIs, and deploying to the cloud. Collaborated with teams to deliver user-friendly solutions.
Full Stack Developer
Apni Sawari· Part Time
Revamped user interface for a ride-hailing app. Responsible for maintaining the application and adding new features to enhance functionality and user experience.
MERN Stack Developer
Alright Tech· Full Time
Worked on the company website and job portal. Contributed to Smart Solution Strategies — a crypto copy trading platform designed to optimize portfolio management and enhance profitability.
Portfolio
Projects
Real-world systems built for production — from real-time platforms to AI-powered applications.
Freelance marketplace with real-time collaboration
Production platform with Stripe escrow payments, WebSocket bidirectional chat, custom offer negotiation engine, and complete order workflow (Draft → Active → Delivered). Modular NestJS architecture with 20+ feature modules and Firebase push notifications.
Mojo Quiz Game
Real-time multiplayer quiz platform
WebSocket game engine for synchronized multiplayer quiz sessions with live scoring, lifeline mechanics, and team management. NestJS backend with 12+ modules and Stripe subscription management.
SmartSched
AI-powered meeting scheduler
LangChain + GPT-4 powered natural language meeting scheduler. Users converse to schedule and manage Google Calendar events. FastAPI backend with WebSocket + SSE real-time communication.
Multilingual real-time doctor-patient communication
Azure AI Speech for real-time medical interpretation. React Native mobile app, React.js admin portal, ElevenLabs TTS, Twilio for phone translation, and per-session billing system.
Live Call Translation
OpenAI Realtime API × Twilio bridge
Real-time multilingual call translation using Twilio IVR for language selection and a FastAPI WebSocket bridge between Twilio Media Streams and OpenAI Realtime API.
Expertise
Technical Skills
Frontend
All Proficiencies
Background
Education
Bachelor of Science in Computer Science
SZABIST - Islamabad
Credentials
Certifications
Advanced React Course
Coursera (Meta)
Crash Course on Python
Coursera (Google)
Version Control
Coursera (Meta)
Interactive 3D
My Workspace
A 3D scan of my actual desk setup — drag to orbit, scroll to zoom, right-click to pan.
Get in touch
Let's build something great.
Open to full-time roles, freelance projects, and interesting collaborations. I reply within 24 hours.
Currently available
Open to full-time positions and freelance projects · Based in Rawalpindi, Pakistan · Remote-friendly