antonkarlovskiy

Ethereum’s largest Layer 2 ZK‑proof network with a token‑governed roadmap for scalable, decentralized applications. - Developed web3 front-end features and user interfaces for decentralized applications. - Collaborated with blockchain engineers to integrate smart contract functionality. - Optimized performance and improved UX for cross-platform accessibility.

Permissionless DeFi lending protocol enabling leveraged LP positions and on‑chain yield farming. - Developed smart contracts in Solidity and audited Ethereum-based DeFi protocols. - Built responsive front-end dApps using React and ethers.js. - Improved DeFi UX by integrating advanced wallet features.

Part of Alphabet - Core contributor to web performance optimization projects such as Quicklink and React Adaptive Hooks. - Core contributor to patterns.dev (recognized as one of The humans behind patterns.dev). - Defined best practices for Core Web Vitals, Lighthouse, and PageSpeed Insights. - Collaborated with Chrome and GoogleChromeLabs teams on UX improvements. - Applied AI techniques, including LLM integration, model fine-tuning, and MCP-based workflows, to enhance developer tooling, automation, and intelligent web solutions.

A Bitcoin‑focused DeFi platform enabling swap, lend, and borrow functionalities in a decentralized, multi‑chain ecosystem. - Led development of DeFi interfaces with React, TypeScript, and Polkadot SDK. - Implemented secure integration with smart contracts for cross-chain protocols. - Contributed to accessibility and performance best practices.

Cross‑chain DeFi and DEX aggregation platform delivering unified liquidity and user-centric trading interfaces. - Led a small frontend team delivering exchange and DeFi dashboards. - Architected React/Next.js codebase for scalability and modularity. - Mentored junior developers on blockchain best practices.

Web3 on‑ramp platform for instant crypto purchases (BTC, ETH, USDC) via credit/debit cards. - Built front-end solutions for crypto payment systems and DeFi integrations. - Enhanced UI/UX and performance for scalable, user-facing financial applications.

A private client project: a sports betting web application providing real-time odds, user account management, and secure payment integrations, designed for scalability and engaging user experience. - Led development and deployment of full-stack web applications. - Managed project delivery timelines and coordinated a small dev team. - Improved backend scalability with Node.js and cloud infrastructure.

Cloud-native oil & gas field operations platform (JOYN) for upstream production optimization. - Architected enterprise React-based front-end solutions. - Enhanced performance and modularity of large-scale web applications.

Lydya Financial Ltd is a Cyprus-based financial services firm offering trading and investment solutions in capital markets. - Re-engineered the company’s Web Trader platform, migrating from legacy AngularJS (v1) to a modern React.js frontend and Node.js backend. - Integrated TradingView library as a replacement for ChartIQ, improving chart performance and trader experience. - Implemented critical features including dark theme and trade-in-chart functionality. - Optimized for mobile responsiveness, ensuring seamless user experience across devices. - Authored unit and integration tests to validate feature parity and prevent regressions. - Managed deployment pipelines, delivering platform instances to multiple domains.

Full-service web and mobile software design, development, and delivery firm, including AI/ML‑powered platforms. - Built React applications for real-time media and streaming platforms. - Optimized UI rendering and reduced latency for end-users.

UK‑based design‑led electric vehicle charging solutions provider. - Contributed to front-end development for enterprise applications.