I'm a Senior Full-Stack & Web3 Engineer with 9+ years architecting scalable web applications and decentralized platforms across DeFi, NFT marketplaces, and enterprise systems. I blend deep MERN stack expertise with Solidity smart contracts and cloud infrastructure on AWS and Azure, and I ship production-grade blockchain solutions that move real metrics.
Across roles I've delivered up to 50% performance gains, 30% cost reductions, and led cross-functional teams shipping tokenization, staking, lending, and NFT products end-to-end. My focus today: secure smart contract architecture, Layer-2 scaling, and seamless wallet-to-UI integration.
- 🔭 Architecting DeFi protocols (tokenization, staking, lending) @ Solichain — 25+ Solidity contracts shipped across 5 EVM networks
- ⛓️ Living in the smart contract security stack: OpenZeppelin patterns, Slither, solidity-coverage, Echidna fuzzing
- 🧪 Exploring Account Abstraction (ERC-4337), L2 scaling (Arbitrum · Optimism · Base), ZK proofs, and cross-chain messaging
- 💬 Ask me about DeFi protocol design, NFT marketplace architecture, Dual-Layer Tokens (DLT), EVM gas optimization, and full-stack Web3 integration (wallet → contract → UI)
- 📫 Reach me at nawwarhisso@gmail.com
- 🤝 Open to Senior / Lead / Staff — Web3 & Blockchain engineering roles — full-time or freelance
⛓️ Web3 & Blockchain
💻 Languages
Frontend
Backend
Databases
Cloud & DevOps
Testing
🔗 Solichain · Senior Software Engineer / Freelancer
Remote · May 2024 – Present
- Architecting 5 DeFi platforms across tokenization, staking, and lending — end-to-end smart contract lifecycle from design through deployment.
- Deployed 25+ Solidity smart contracts on 5 EVM-compatible networks with audit-ready security patterns.
- Integrating on-chain logic with React / Next.js / Node.js services alongside cross-functional teams of 5–15 engineers.
👗 UNXD · Senior Web3 Full Stack Developer
Dubai, UAE · Aug 2023 – Aug 2024
- Tuned APIs and database queries for a 35% improvement in system responsiveness.
- Shipped Web3 interfaces connected to backend smart contracts — 30% lift in user engagement.
- Streamlined CI/CD on GitHub + Azure DevOps — 25% faster deployments; cut Azure cloud spend by 20% via Lambda and resource optimization.
- Built an AI-powered shopping assistant and fashion recommendation models powering personalized commerce.
💼 Polytrade Finance · Senior Full Stack Engineer
Dubai, UAE · Mar 2022 – Aug 2023
- Led a 4-engineer team to launch an NFT Marketplace on MERN + Next.js + NestJS.
- Conceptualized the Dual-Layer Token (DLT) standard — multi-share ownership with unique characteristics per token share set.
- Built an automated advertising data product across 8+ APIs that generated $2,000+ profit in month one with steady growth.
- Integrated Solidity + Ethers.js + Web3.js — 50% increase in platform user satisfaction.
- Architected AWS CI/CD (CodePipeline, CodeBuild, EC2, Lambda, S3) — 30% faster deployments.
🏥 Medicus AI · Senior Software Developer
Remote · Aug 2021 – Feb 2022
- Earned a Spot Award for implementing parallel processing that cut batch job execution time by 50%.
- Spearheaded an AI-driven medical diagnosis feature — 20% customer satisfaction ↑, 15% platform usage ↑.
- Mentored junior engineers and designed a robust testing framework — 30% fewer production bugs, 25% coverage ↑.
📰 Majarra (Haykal Media) · Full Stack Web Developer
Remote · Oct 2020 – Aug 2021
- Led and mentored the development team — 15% improvement in team productivity.
- Partnered with UX to redesign interfaces — 20% reduction in bounce rate.
📱 MTN · Enterprise Resource Planning Administrator
Damascus, Syria · Aug 2018 – Oct 2020
- Administered Oracle ERP systems and custom forms serving 2M+ users at scale.
- Shipped 3 new inventory features on Java + OFBiz and supported 10+ business units.
Remote · Jan 2017 – Dec 2018
- Enhanced functionality across 20+ applications via PHP + PL/SQL + RESTful APIs.
- Implemented security and data protection protocols safeguarding 10,000+ users with regulatory compliance.
Tishreen University — B.Sc. in Software Engineering · Lattaquie, Syria · 2018
These are the repos I recommend pinning on the profile — they best represent the work I do:
- 🚀 YieldPilot — Gasless DeFi yield dashboard: ERC-4626 vault on Sepolia + ERC-4337 v0.7 smart accounts with WebAuthn / passkey signatures (RIP-7212), backend-signed paymaster, Pimlico bundler, The Graph subgraph. Next.js 14 · TypeScript strict · Turborepo.
- 🧰 Node Bundler UI — Frontend for Node Bundler: ERC-4337 account abstraction bundler UI (wallet connect, UserOps, sponsor / paymaster flows).
- ⚙️ Node Bundler — Backend service for Node Bundler: UserOperation mempool, EntryPoint integration, and bundling logic.
- 🧪 Mockchain — Local EVM mock chain for rapid smart-contract development, testing, and integration scenarios.
- 🏦 Multibank Group — Multibank Group technical assessment: full-stack & smart-contract engineering sample.
- 👗 UNXD — Web3 + fashion commerce sample built around the UNXD engagement (Next.js + Solidity integration).