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.

Experience• Experienced Chief Technology Officer with 10+ years of experience in leading technicalteams and delivering innovative solutions. Chief Technology Officer & Chief Product Officer• Built the technology of the whole Q-Commerce business (Food Rocket USA) from scratch— estimated as $125 mln company.• Built 5 high-motivated software engineering teams for different businesses that achievedincredible results in short-term period.• Managed 2 mln DAU B2C mission critical applications at one of the biggest telecomcompanies in Eastern Europe at the age of 25.Chief Technical Officer, Saola.sg; SingaporeAI Sales Assistant for real estate companiesJune 2024 – Present• Developed an AI-driven sales assistant product from scratch, tailored for real estatecompanies, enabling automation and optimization of client interactions.• Assembled and managed a highly skilled team of professionals, ensuring timely and high-quality delivery of the product.• Took on dual roles of CTO and CPO, overseeing both technical and product strategies toalign with business objectives.• Designed and implemented key processes for development, release, and support of theproduct.• Pitched and demonstrated the product’s capabilities to stakeholders, driving adoption andmarket recognition.Chief Technical Officer, Food Rocket; Chicago, USA10 Minute on demand grocery delivery service. Built a Company from Scratch to a $146 Million ValuationFeb 2022 — June 2024• Created a Software Development team of 30 senior professionals from scratch.• Built IT processes— development, releases, support, incident management.• Pitched technologies and its necessity to board members of Circle K (Alimentation Couche-Tard Inc.).• Developed the whole back-office product — Commerce Engine (ERP), ML Autoreplenishment service, task-based Warehouse Management System, ML based auto-dispatch for couriers, inventory management, kitchen module and many more.• Delivered B2C Web-Site (React.JS), Native iOS (Swift) and Android (Kotlin) Apps from zero toproduction.