slaven

Led smart contract projects with a focus on Ethereum, Solana, and EVM-compatible chains like Binance and Avalanche, leveraging Hardhat, Solidity, and Ethers.js to develop upgradeable contracts with robust security, scalability, and performance optimizations. Architected full-stack decentralized applications (dApps) using the T3 stack (Next.js, tRPC, Prisma, Tailwind, Zustand), ensuring seamless Web3 wallet connectivity with Metamask and WalletConnect. Implemented multi-chain authentication solutions ensuring secure login and transaction signing via hardware wallets and social authentication. Deployed cross-chain smart contracts using Chainlink CCIP to facilitate seamless crypto swaps between Ethereum-based blockchains and Solana, improving interoperability and accessibility for retail users. Integrated blockchain APIs and smart contract interactions, using Web3.js, Ethers.js, and viem, enabling users to perform secure token swaps, staking, and governance voting. Automated deployment pipelines using Docker, Kubernetes, Terraform, and GitHub Actions, improving CI/CD efficiency and reducing downtime in Web3 application releases. Designed scalable backend services with Nest.js, Node.js, and Express, optimizing GraphQL and REST APIs for low-latency data retrieval, reducing API response times by 35%.

Developed and maintained frontend Dapps for Solana and Ethereum networks, utilizing React, Angular, Vue.js, and Next.js. Deployed and optimized Uniswap V2/V3 contracts and integrated NFT marketplaces, LST, and cross-chain functionalities in DeFi projects, ensuring secure and efficient interactions across multiple blockchains. Collaborated closely with designers and backend developers to deliver user-friendly interfaces, integrating smart contract data with frontend applications using Context API and custom components. Launched high-performance NFT marketplaces and cross-chain dApps on Ethereum, Solana, focusing on security and scalability. Built production-ready prototypes, resolved audit issues, and ensured compliance with blockchain best practices during deployment and testing on testnets such as Ethereum Sepolia and Holesky. Automated deployment scripts for staging and production, reducing downtime in updates.

Collaborated with backend teams to develop responsive SPAs and 10 mobile applications using React.js, Angular.js, Next.js, and Vue.js, delivering engaging and intuitive user interfaces. Worked closely with backend developers to integrate APIs and ensure seamless communication between frontend applications and Node.js microservices. Built and optimized frontend components for applications utilizing AWS API Gateway, improving performance and scalability of API integrations. Developed dynamic user interfaces and interactive features by consuming REST APIs built on ExpressJS and Fastify, ensuring smooth and responsive user experiences.

Developed multi-browser compatible web pages using React, Angular.js, Next.js, Vue.js, PHP, and JavaScript, ensuring seamless functionality across different platforms. Built an internal browser-based text editor leveraging HTML, CSS, JavaScript, Require.js, Backbone.js, Handlebars.js, and Jasmine for enhanced user interaction. Automated UI testing with JavaScript, Jasmine, and Protractor to ensure the reliability and performance of web applications. Translated mockups into responsive, high-quality web pages, maintaining consistency with design specifications. Utilized GIT for version control, following conventional commit standards, and consistently pushed code to GitHub for team collaboration.