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.

An enthusiastic Full Stack Developer with a strong background in both traditional and blockchain technologies, demonstrating a commitment to technological advancement and efficiency. Equipped with substantial experience in developing secure and scalable applications, optimized for user engagement and system performance. Passionate about integrating innovative solutions in blockchain and finance, with a focus on creating seamless user experiences and improving transactional security across multiple platforms. Anticipates contributing effectively to forward-thinking projects with a focus on cutting-edge technologies.

I am a full stack developer with a focus in testing robust applications while working with cross-functional teams to deliver high quality code to the production environment. For over three years I was the sole tester and managed all aspects of my project, from planning, CI/CD pipleline integration, and UI/API automation. I leverage industry standard tools and frameworks to create a sustainable testing suite that allows clients to feel at ease with consistent migrations to the production environment.  

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

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. 🚀