Creative person who loves solving challenging problems to simplify the world.

High-energy Web3 Developer with experience in smart contracts, full-stack dApps, and blockchain integrations across Ethereum, Solana, and TON. Skilled in Web3, Web2, and AI integration. Enjoys talking about crypto.

I’m Mohamed Dhia Ben Fraj, a passionate engineer with 6+ years of experience in software development, including 4+ years in blockchain engineering. I specialize in building secure, scalable Web3 infrastructures, DeFi protocols, and smart contracts using Solidity, Go, and Rust. I’ve contributed to projects across EVM-compatible chains, developed smart contracts for NFT platforms, and architected full-stack decentralized applications. With strong backend experience in Node.js, NestJS, and PostgreSQL, I’m equally comfortable managing CI/CD pipelines and infrastructure automation using Docker, Kubernetes, Terraform, and GitHub Actions. Driven by innovation and real-world impact, I bring a hands-on, solution-focused mindset to every team I join.

Experience: Software Development Engineer @ Vitwit Technologies Built a prediction market smart contract and a resolution system using Rust and CosmWasm Developed ArkaPlayground – a GitHub-style AI platform using Next.js, Redux, TypeScript Created IBC-based smart contracts for cross-chain liquidity pools on Osmosis Built data management systems using PostgreSQL & InfluxDB for AI agents Integrated real-time web search into an AI agent framework Internship @ Vitwit Technologies Worked on a decentralized OTC platform, including both smart contracts and frontend in React Conducted research on prediction markets like Polymarket and Augur Projects: IBC Liquidity Pool Contract (CosmWasm, IBC, Osmosis) ArkaPlayground – a full-stack AI notebook platform Prediction Market Contract with cross-contract resolution logic Decentralized OTC Trading Platform with bidding and escrow Technical Skills: Languages: JavaScript, TypeScript, Rust, Java, C, Solidity, SQL Frameworks/Tools: React.js, Node.js, Next.js, Express.js, Redux, Tailwind CSS, AWS, CosmWasm, GitHub, Terraform Databases: PostgreSQL, InfluxDB Achievements: 1st Place in BIG BYTE2 Coding Contest Solved 500+ coding problems Tech community leader at CODECLUB Delivered lectures on DSA to juniors

Senior Blockchain & Web3 Full Stack Engineer with 7+ years developing Blockchain & DeFi related projects. Expertise in all phases of blockchain & web3 development lifecycle focusing on high-quality, scalable and efficient solutions with full attention to detail and innovative mindset.

 A backend developer who loves building scalable systems with Java (Spring Boot) and Python (FastAPI). I’ve worked with MySQL, MongoDB, and Redis, automating complex workflows like loan processing. I enjoy solving real-world problems, breaking things (occasionally), and fixing them even better.

Results-driven Next.js Developer with 1+ years of experience in building dynamic, responsive web applications using the MERN stack. Skilled in React.js, Next.js, Node.js, and MongoDB. Proven ability to optimize performance, improving eciency by up to 15%. Experienced in integrating RESTful APIs and delivering user-centric UI/UX solutions. Strong team collaboration and deadline-driven performance. Actively seeking new opportunities to contribute to innovative development teams

Frontend Developer with over 4 years of experience in creating dynamic, user-centric web applications. Skilled in transforming use cases and functional requirements into fully realized products, with a proven track record in developing scalable web solutions. Experienced in modern frontend technologies, passionate about delivering high-quality code, and also  worked  with web3 projects to integrate blockchain functionality into web applications.

As a backend-focused AI and blockchain engineer, I specialize in scalable architectures, AI-driven automation, and secure blockchain integrations. I design and optimize high-performance backend systems using Node.js, TypeScript, Python, and C++, with expertise in LLMs, RAG systems, and AI-powered automation.I have extensive experience integrating LLM-powered AI agents into production environments, fine-tuning models for automation, predictive analytics, and real-time data processing. My work includes optimizing search and retrieval algorithms with vector databases (Pinecone, Weaviate) and enhancing AI-driven UX interactions.On the blockchain side, I develop smart contracts (Solidity, Polygon, Ethereum) and integrate stablecoin payments with Stripe and AI-powered security models. I’m passionate about leveraging AI and blockchain to build innovative, automated, and secure platforms, constantly pushing the boundaries of technology. 🚀