Designed and developed the Front-End architecture of of Signature CRM, used to collect, proof and manage voters' signatures in support of municipal and presidential candidates.Meeting the tight deadlines dictated by the election cycle and dynamically changing requirements of Russian electoral legislation, in a couple months I created the system to manage hundreds of thousands of signatures, thousands of signatures collectors and dozens of other staff like lawyers, managers and so on.Together with the Back-End team planned the APIs for lowering the server load, connected the external APIs for OCR and address proofing, offloading minor tasks to subordinate developers.

Worked on a comprehensive e-Assessment platform for a UK-based company, catering to millions of users.• Played a pivotal role in architecture planning, performance enhancement, and optimizing database queries and cross-service data transfers for access control mechanics.• Redesigned the user rights management making possible to handle up to 30 million interlinked records in-browser in under 2 seconds words-case. This involved: • Streamlining data fetching and processing from the database to the front end. • Developing a lag-free, responsive UI in React+Redux for real-time editing of thousands of role trees, reducing the processing time for worst-case scenarios from up to 5 hours to under 2 seconds. • Achieving 90%+ LoC test coverage. • Ensuring seamless backend integration and maintaining performance integrity for common use cases.• Significantly improved test driver accessibility, achieving WCAG 2.1 AA/AAA compliance.• Successfully trained two teams in TypeScript, React, and Redux.• Pioneered a custom report generation tool using user-uploaded templates in Scriban, a scripting language newly introduced to the team.• Mastered Scriban basics within a day and developed templates facilitating HTML file generation with print support, interactivity, and accessibility features.• Conceptualized and implemented a novel chart type, which entailed developing a unique 2D spatial collision-avoiding object alignment algorithm.

Worked on multiple projects for different customers, including:Beeline (Largest Telecom Operator in CIS) • Developed dynamic AB-testing scripts in JavaScript for the online store, enabling real-time modification of page markup.MTS (Largest Mobile Operator in Russia and CIS) • Conducted extensive refactoring and performance optimization of legacy code across various projects. • Reworked and upgraded multiple Windows and Web services, improving functionality and system efficiency. • Designed and built a new subsection for the “Business Club” project, adeptly navigating cache-friendly limitations to provide exclusive content to MTS subscribers.Post Bank (Bank of the Russian Post) • Serving as the chief developer during the initial release phase. • Created and integrated numerous dynamic pages and forms, transitioning legacy operations to asynchronous models. • Enhanced the custom caching and routing mechanisms, bolstering the site’s stability, extensibility, and performance. • Established multiple testing environments with continuous integration (CI) and documented the entire workflow for future reference.RusNano Official Website • Enhanced the site's performance through amending ASP.NET caching and other optimizations.