Middle Frontend-разработчик

Sweden-based web3 decentralized ecosystem. · Increased user engagement by 103% by developing and optimizing a website for Keres (web3 first-person hero shooter). Main sections and flows implemented: signin/signup, profile, game items and locations marketplace, friends list and messenger — using Firebase. · Enhanced legacy code for the crypto exchange service, including MetaMask integration and support for new cryptocurrency chains. · Customer reviews became more than 72% positive after my implementation of the new version of HydroBridge — a web3 app to swap Hydro token between networks. · Resolved 68% of all bugs in HydroBridge and Keres. Increased stability by contributing to HydroSwap — a web3 app for swap of various tokens (USDT, BNB, ETH, and more) to Hydro tokens. Stack: React, Redux Toolkit, Firebase, Web3, Type, HTML, SCSS, Formik, Material UI.

· Developed apps and websites for various business clients (transport, cosmetic service, video devices rent, news…) using: React, React Router, Redux, Redux Thunk, Axios, Formik, Material libraries, REST API, HTML, SCSS. · Developed an SPA CRM for night clubs, including a content management system for visitor monitoring with KYC features. · Performed Unit Tests. · Implemented Storybook for modules of the app demonstration to stakeholders. · Created websites with HTML, CSS and JS. Used preprocessors SASS, PUG, and the Bootstrap framework.

Medtech b2b CRM system. · Developed a system of medical exceptions for the blood transfusion service in the information system qMS, built in Mumps language. · Implemented a search for patient data in the database using a universal electronic medical card (UEC). · Developed electronic document signature modules using C++ and C# with the .NET Framework.

Providing top-tier payment solutions for leading iGaming businesses. · Developed the iGaming-Fintech ecosystem Zenexhub — an investment crypto application featuring crypto wallet authentication, a personal account, and RevShare investment pools for funding CPA iGaming traffic and earning a percentage of the platform’s revenue (GGR), offering both conservative and high-yield options. · Created Zenexcdn — landing page for this platform. · Built a landing page and a Telegram mini-app with crypto games for live events: TOKEN2049, SBC Summit Lisbon 2025, etc.

Cyprus-based iGaming project. · Built and maintained responsive user interfaces with React, SCSS Modules, and modern build tools. · Developed and optimized mobile-friendly layouts for seamless cross-device experience. · Integrated REST APIs and WebSockets for real-time updates (e.g., balance, sessions). · Developed modular components: bonuses, live system, dashboard, and personal area. · Participated in architectural discussions, proposed UI improvements, and optimized performance. · Wrote clean, maintainable code and contributed to team decisions. · Collaborated closely with backend devs, designers, and PMs to ship features smoothly. · Worked with state management tools: Redux Toolkit and RTK Query. Stack: ReactJS, Type, RTK Query, Redux, WebSockets, SCSS, UI kits, Jira, Game providers.

Video marketplace service. · Developed a multi-page website from scratch using: NextJS, Redux, HTML, SCSS, Bootstrap, Radix, RTK Query. · Developed and implemented app sections and features: login, personal dashboard, checkout, and PayPal integration. · Created a UI-kit for the project. · Managed a development team of 3 members to launch the product MVP.