marcinwu

LEOCODE is the provider of IT infrastructure and training service intended to provide digital solutions to problems. - Implemented Ethereum HD wallet to manage key pairs and accounts. Used BIP39, BIP32, and BIP44. - Integrated solana contracts seamlessly into websites, ensuring secure transactions and data integrity with a 12% reduction in potential vulnerabilities. - Implemented continuous integration and deployment (CI/CD) pipelines to automate testing and deployment processes, reducing manual errors by 20%. - Built a full-stack application integrating NFT (Non-Fungible Token) functionalities, resulting in a 21% boost in revenue for digital artists and creators by enabling direct sales and royalties through smart contracts. - Constructed a project with TypeScript and GraphQL on the back end and React with hooks and Headless UI on the front end.

SoftwareMill specializes in developing projects based on the Java Enterprise Edition platform. - Architected Decentralized Exchange (DEX) dApp using Golang, Ethereum smart contracts and IPFS for order matching enabling $150K monthly volume. - Engineered Prediction Market protocol allowing transparent, trustless betting on real-world events through on-chain oracle data updates. - Developed NFT Lending protocol enabling over 3000 users to collateralize/borrow against idle digital collectibles with $250k TVL. - Piloted Gamified Staking DApp on Cosmos SDK rewarding 30 validators for securing the network and attracting $100K in delegated assets. - Architected Angular based dashboard and admin portal allowing dev teams to deploy, monitor nodes and debug networks remotely. - Deployed scalable full nodes on Kubernetes using AWS services like EC2, Lambda reducing costs by 18% compared to previous monorepo architecture.

Tooploox is a software development company focused on emerging technologies, helping startups and larger firms build great products that solve real-world problems. - Implemented smart contracts on the Ethereum blockchain, leading to a 16.7% reduction in transaction costs and gas fees. - Programmed 7 prototype decentralized applications experimenting with novel consensus mechanisms. - Administered 4 major wallet app releases, streamlining beta testing and reducing crashes by 78.3% through rigorous QA automation. - Developed and maintained robust, scalable frontend applications using TypeScript and React, ensuring high code quality and responsiveness across various devices. - Collaborated with clients to develop custom decentralized applications (dApps) tailored to their specific needs, resulting in a 16% increase in customer satisfaction and positive feedback. - Improved code efficiency by 83% through continuous optimization and performance tuning, resulting in more robust and scalable applications.