Muhammad Dawar E.Private profile: Upwork shows its earnings only to signed-in members, so we check it every few weeks, not daily. MRR here is a rough estimate (Upwork's six-month earnings ÷ months active). Last read Nov 5, 2026.

Are you building a high-performance Web3 protocol, a mission-critical SaaS backend, or an AI-powered platform that cannot afford security vulnerabilities or architectural debt? I am a Senior Full-Stack & Blockchain Engineer with 5+ years of production experience architecting and deploying 40+ applications. From mathematically verified smart contracts and cryptographic payment systems to high-concurrency NestJS backends and responsive Next.js 15 interfaces, I take full ownership from system design to production deployment. ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 🚀 CORE TECHNICAL EXPERTISE ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 1. BLOCKCHAIN & WEB3 ENGINEERING • Multi-Chain Development: Cardano (Plutus, Aiken), EVM/Solidity (Ethereum, Polygon, Arbitrum), Internet Computer Protocol (ICP / Motoko), Hyperledger Fabric (TypeScript chaincode), Tron, and Solana. • DeFi & Architecture: Decentralized token launchpads (IDO PASS), multi-signature threshold wallets, staking/vesting mechanisms, and cross-chain transfers (Circle CCTP). • Cryptographic Innovations: On-chain access control, x402 HTTP micropayment protocols, and ICRC-7/ICRC-3 NFT standards. 2. ENTERPRISE BACKEND ARCHITECTURE • Node.js & NestJS: Clean Architecture, Domain-Driven Design (DDD), modular microservices, and high-performance event-driven pipelines. • API Design: GraphQL (Apollo, Yoga, subscriptions), tRPC, REST APIs, and bidirectional WebSockets. • Databases & Data Modeling: PostgreSQL, MongoDB, CouchDB, Redis caching, and Prisma ORM. 3. MODERN FRONTEND & MOBILE • Next.js 15 & React: App Router, Server Components, TypeScript, SSR/SSG, and State Management (Redux Toolkit, Zustand). • Mobile Apps: Cross-platform React Native & Expo (built terminal point-of-sale and social apps). • Monorepo Architecture: Turborepo and pnpm workspaces for unified multi-app codebases. 4. AI INTEGRATION & VECTOR SEARCH • AI Implementations: OpenAI API, AssemblyAI, semantic search, and autonomous agents. • Vector Databases: Weaviate integration for AI-driven recommendation engines and RAG workflows. 5. CLOUD, DEVOPS & SECURITY • Cloud: AWS (EC2, S3, Lambda, RDS, IAM). • DevOps & CI/CD: Docker containerization, AWS CodePipeline, GitHub Actions, Nginx reverse proxies, zero-downtime deployment. ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 💼 FEATURED PRODUCTION CASE STUDIES ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ • TrustForge (Multi-Chain Security & Financial Protocol): Architected a Turborepo monorepo integrating EVM, Tron, and Solana contracts with a NestJS backend and Next.js frontend. Implemented automated contract security workflows and real-time transaction reconciliation. • MealMate (Stadium Social Operating System): Designed and delivered a multi-app platform powered by a central NestJS + tRPC + WebSocket backend, feeding Expo React Native mobile apps for fans and vendors alongside high-performance Vite React admin dashboards. • Decentralized File-Sharing Platform with Micropayments: Engineered an enterprise Hyperledger Fabric network with TypeScript chaincode for on-chain file access control, coupled with the x402 HTTP micropayment protocol for trustless pay-per-access monetization. • Cardano NFT Marketplace & Multi-Sig Wallet: Built and deployed mainnet Plutus smart contracts featuring automated on-chain royalty distribution. Engineered a threshold-based multi-sig validator, optimizing script size via Plutonomy to significantly reduce transaction fees. • Hive & OSAI (AI Social Commerce & ICP NFTs): Built an AI-driven social commerce mobile app integrating a Weaviate vector database for semantic product recommendations, connected to Internet Computer (ICP) canisters and ICRC-7/3 NFT standards. ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 🤝 HOW I WORK ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ • Clean, Self-Documenting Code: Tested, typed, and structured according to industry standards. • Direct & Proactive Communication: Clear milestones, sprint updates, and technical walkthroughs. • Fast Ramp-Up: Seamless integration with your existing team, GitHub/GitLab, and Jira/Linear boards. Let’s turn your architectural vision into production-ready software. Send me a message or invite me to interview to discuss your project requirements!