Front End Developer

Led frontend across innovative DeFi, wallet, and gaming projects on Stacks, Bitcoin, Ethereum, and Solana. Built and tested Clarity smart contracts for Stacks. Developed the entire frontend and wallet integration layer. Guided the app through a successful external security audit and implemented post-audit improvements. Led the development of app major update with redesign and new features. Developed and maintained reusable UI kit. Performed major performance optimization, debugging critical modules to achieve a 2–3× improvement across all metrics. Conducted refactoring and library migrations. Deployed and integrated Ethereum smart contracts. Designed the frontend architecture, established build pipelines, and led stack selection. Implemented wallet connectivity and enhanced animation performance for seamless gameplay. Developed app business logic with complex state management and data refresh.

Developed flexible and accessible UI kit components for project redesign. Refactored old components reducing module size and improving scalability and readability. Worked on project migration to Feature Sliced Design methodology and Effector state management. Designed and implemented data model for interacting with chain accounts and subaccounts.

Led frontend team to develop scalable and maintainable web application providing users with reliable and consistent UI for managing game assets that helped company to grow active daily players count two times. Developed flexible UI kit used across 4 projects. Interviewed and hired engineers for frontend team helping meet demands of rapidly growing startup. Maintained clean code base by configuring linters and reviewing PRs.

Developed application with Electron and React providing consistent and reliable UI for testing SDK. Researched and developed new unique mobile validation based on WCAG 2.1. Did extensive research on accessibility best practices and standards. Performed migration to newer versions for TypeScript, Electron and React keeping project stack updated to make hiring easier. Proposed and implemented migration to MUI library achieving code base reduction and improving UI accessibility. Did PoC app for transferring data from PC to mobile(across all platforms) over Bluetooth Low Energy creating reliable backup connection solution. Intertwined more than 10 engineers helping team to satisfy business need.

Created tool which transforms simple set of commands from json file into automated UI tests that turned full working day of manual testing for every release into 15 minutes test run. Configured video recording for UI tests with virtual screen (xvfb) and ffmpeg which reduces time required to find an error. Performed migration of complex web app from angular 8 to 11 leading to page load time decrease by 1.2 seconds. Led frontend team to develop web app for large railroad company in the country which helped to improve their services by collecting feedback from the employees. Developed and documented company's UI kit used across 5 projects. Developed and maintained web application for sailors skill assessment. Planned and developed admin application, did everything from frontend and proxy servers to configuring CI/CD and ADFS. Created Jira extension for accounting resulting in department productivity increase by 20%. Maintained fintech project, quickly adjusted to legacy code and delivered multiple features. Developed couple features for architecture planning project with Unity.

Lead frontend developing React application for US based customer. Created project from scratch, worked on apps architecture, reviewed PRs. Developed project from scratch using Angular, closely cooperated with designers to create beautiful and user friendly interface. Developed time tracker web application using React and Rust for backend helping company to save money by using own solution.

Developed an interactive map of Saint Petersburg with time rewind feature. Was responsible for both frontend and backend.

Worked on platform for hosting educational courses and tests. Learned docker, configured project build with docker. Wrote integration test. Configured SSL.

Worked on corporate web portal. Learned and used Java ecosystem's testing libraries. Wrote unit and integration test for JSF application.