Software Architect · Full-Stack Web Developer
I design and build AI-powered products, end to end.
Voice agents, task automation and modern full-stack systems, architected, built and shipped by one senior engineer. 5+ years turning ideas into reliable, scalable software.
Available for freelance, 2026
- Role
- Software Architect · Full-Stack
- Focus
- AI · Voice · Automation
- Stack
- Next.js · Supabase · Postgres
- Based
- Pakistan, Remote worldwide
What I do
Services for founders & teams
Hire me to design the architecture and build the whole thing, or to lead the hardest parts of your product.
AI Integrations & Voice AI
LLM chatbots and AI agents, RAG and semantic search (pgvector), image generation, and real-time voice, Deepgram speech-to-text / text-to-speech and Vapi voice agents, built into your product.
Automation & Workflow Engineering
Automate the repetitive work, data pipelines, scraping, scheduled jobs, notifications and third-party integrations that run reliably without anyone watching them.
Product Architecture & System Design
I design the foundation, data models, APIs, infrastructure and scaling strategy, so your product is built right the first time.
Full-Stack Web Apps
End-to-end web applications on a modern stack: Next.js on the front, Supabase / PostgreSQL and Node.js on the back, with Stripe and Shopify where you need them.
Web3 & Smart Contracts
Gas-efficient Solidity contracts, NFT marketplaces and cross-chain bridges, audited patterns and IPFS-backed metadata.
Cross-Platform Mobile Apps
Flutter apps for iOS and Android with Firebase, real-time video and custom REST APIs, from build to store deployment.
Selected work
Products I've designed & built
Real projects across full-stack SaaS, Web3, mobile and backend. Each one shipped end to end.
Car MOT & Garage Management Platform
A production-grade SaaS that lets a car workshop manage priced services and a booking calendar while customers self-book slots and pay online.
Multi-Chain Prediction Market
A decentralized prediction/parlay platform deployed across Sanko, Base, Ethereum and Sonic, with live odds over websockets and on-chain settlement.
NFT Marketplace & Trading dApp
A three-tier Web3 product: Solidity contracts, a wallet-connected dApp, and a Node backend for off-chain data, scheduled jobs and Stripe payments.
Social & Dating App
A cross-platform Flutter social/dating app with card-swipe matching, real-time messaging, live video (Agora) and push notifications, backed by a custom Node API.
ApeChain Smart Contracts
Working directly with the ApeChain team to design, build and ship production Solidity smart contracts on ApeChain, gas-efficient, audited-pattern contracts powering on-chain products.
Curious Minds Daycare
A full-stack web platform built for Curious Minds Daycare, giving the business a professional online presence plus the tools to manage enrolments, schedules and parent communication.
Toolbox
Technologies I build with
A modern, battle-tested stack, chosen for reliability and scale, not hype.
Architecture & Core
- System Design
- Clean Architecture
- REST & GraphQL API Design
- Microservices
- Scalable Systems
Frontend
- Next.js
- React
- TypeScript
- Tailwind CSS
- JavaScript (ES6+)
Backend
- Node.js
- Express
- Prisma
- PHP (Laravel)
- Python
Data & Analytics
- Supabase
- PostgreSQL
- pgvector / Vector Search
- MongoDB
- Redis
- PostHog
AI & Voice
- OpenAI / Claude (LLMs)
- RAG & Embeddings
- AI Agents
- Image Generation
- Deepgram (STT / TTS)
- Vapi Voice Agents
- Whisper
- ElevenLabs
DevOps
- Docker
- CI/CD (GitHub Actions)
- Nginx
- PM2
- AWS (EC2, Route 53)
- VPS Deployment
Web3
- Solidity
- ERC20 / ERC721 / ERC4907
- NFT Marketplaces
- Cross-chain Bridges
- IPFS
Mobile & Integrations
- Flutter (Dart)
- Firebase
- Shopify
- Stripe
- PayPal
- Webhooks
About
An independent builder you can trust
I'm Faisal Saleem, a freelance software architect and full-stack developer. I take on select projects where I can own the architecture and build the product properly, from schema to shipped.
My focus is modern, scalable web applications: Next.js on the front, Supabase and PostgreSQL on the back, with AI and vector-search features where they add real value. I also bring deep experience in Web3 smart contracts and Flutter mobile when a project needs it.
I work the way a good partner should, clear communication, clean code, honest timelines, and software that keeps running long after it ships.
BSc Computer Science · NFC Institute of Engineering & Technology · 2019 to 2023
Track record
Experience
Years of shipping production software for teams and startups. The track record behind the freelance work.
Technical Lead · Hattrick Solution
Apr 2024 to PresentRemote · Pakistan
- Lead cross-functional engineering teams and own architecture decisions across products.
- Design and run CI/CD pipelines (GitHub Actions) for automated, reliable deployments.
- Set and enforce clean-architecture and code-review standards.
Senior Full-Stack Developer · Fistix
Feb 2023 to Mar 2024Remote · Pakistan
- Promoted from Junior to Senior for consistently shipping high-impact features.
- Built scalable Node.js / Express / Prisma backends and Shopify-integrated e-commerce with Stripe + GraphQL.
- Optimized React UIs for performance and mentored junior engineers.
Web & Mobile Developer · Datalines
Jan 2022 to Jan 2023Multan, Pakistan
- Built Flutter mobile apps with Firebase and custom REST APIs.
- Contributed to NFT marketplace development and smart-contract integration.
- Managed Play Store and App Store releases end-to-end.
Developer (Intern) · The Mars Art & Design
Sep 2021 to Dec 2021Multan, Pakistan
- Built Laravel web applications with UI integration and API connectivity.
- Implemented Stripe payment flows and front-end components.
Writing
From the blog
Practical notes on AI, voice, backend and full-stack, drawn from real, shipped work.
Get in touch
Have a project in mind? Let's build it.
Send me your project details and any notes or files, or book a call. I read every serious request and reply within a day.
- Elsewhere
- LinkedInGitHubDownload CV
- Availability
- Freelance, remote worldwide