rolanq

FAQ (Help Center) platform for the VK ecosystem. The system includes a user-facing web application and a feature-rich administrative dashboard. - Designed and developed both backend APIs and frontend interfaces based on business requirements. - Development of a complex role model for the admin panel, allowing for the use of predefined permission sets as well as customization for each VK employee. - Estimated tasks, onboarded new developers, and maintained project documentation. Achievements: - Built a custom rich text editor using Lexical with nested editors and custom nodes. - Improved performance by optimizing CSR rendering and implementing lazy loading, reducing Time To Interactive (TTI) from 2s to 1s. - Established code review and Git workflows, reducing production defects by 20% and speeding up regression testing by 30%. - Optimized database queries and added indexing, increasing system throughput (RPS) by 30%. Tech stack: TypeScript, Next.js, VKUI, VKID, Module-CSS, PostgreSQL, Lexical, Husky, ESLint, Jest.

B2B banking platform for credit history analysis and credit line management. - Optimized microservices within the admin panel. - Migrated 3 services to GraphQL (Apollo Client) with generated hooks and full unit test coverage. - Led task estimation, onboarding, and code review processes. Achievements: - Designed and developed a backend microservice from scratch in 4 months for a new credit product that generated ~$10M revenue in the first 6 months. - Built a high-load data table handling 5,000+ companies with advanced filtering, sorting, and pagination. - Refactored architecture using modern React patterns (hooks, separation of concerns, FSD), improving scalability and increasing feature delivery speed by 20% - Standardized UI by migrating to the company design system, improving security and consistency. - Initiated cross-team sync meetings across 4 teams, reducing migration time to a modern stack by 2x Tech stack: FSD, MVC, TypeScript, React, Redux Toolkit, SberUI, EFS, GraphQl, Apollo Client, Webpack Module Federation, Husky, ESLint, CRACO

Worked on two platforms: 1.Cloud mining platform with NFT, custom tokens, and staking. 2.Charity-focused platform supporting social and environmental initiatives. - Developed a shared UI kit using Styled Components and Storybook. - Migrated platforms to GraphQL for unified architecture. - Participated in cross-review and task estimation. Achievements: - Built analytics dashboards that increased conversion rate by 15% within 3 months. - Implemented MetaMask authentication and crypto payments (BTC, ETH), reducing bounce rate by 20%. - Added smart contract integration, increasing monthly revenue by 5%. Tech stack: FSD, TypeScript, React, Zustand, Styled-Components, Storybook, MetaMask SDK, Vite, ESLint, Node.js, Apollo Server, PostgreSQL, Docker, Docker-compose