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◦ Led the full-stack development of the HAVI analytics system, achieving a 250% increase in data load speeds and delivering a significantly enhanced user interface compared to the legacy system ◦ Achieved 100% on-time feature delivery rate and boosted parallel feature development by redesigning the frontend architecture to a modular design ◦ Developed robust APIs with optimized SQL queries to efficiently retrieve and update data in the database ◦ Managed the app’s CI/CD through Microsoft Azure Pipelines, Azure App Service ◦ Stack: Typescript, Node.js, Nest.js, Vitest, Microsoft Azure, Databricks SQL, React, Redux Toolkit, Material UI

◦ Built a B2B website for TVH company with 75000+ global customers including Toyota, BMW, etc. ◦ Drived 40% of the website’s search traffic by creating a high-demand factory parts search feature ◦ Covered 90% of parts search system with unit tests ensuring high code quality and system reliability ◦ Stack: TypeScript, React, Redux, Jest, Tailwind CSS

◦ Developed Tele2 website, the largest telecommunication provider in Kazakhstan serving 5+ million clients ◦ Developed feature enabling subscribers to form groups and receive cell plan discounts, resulting in over 100,000+ groups taking advantage of tariff reductions ◦ Stack: React, Next.js, GraphQL, TypeScript, Google Material UI, Tailwind CSS

◦ Developed multiplayer online card game with 4,000 monthly players using C#, ASP NET Core, Unity ◦ Built high performance Google’s gRPC server with duplex streaming synchronizing 3 online players ◦ Designed and implemented core game features including advanced role management, random card distribution, automated card-checking logic following best practices including SOLID, DRY, KISS, etc. ◦ About half a million game lobbies were created in the next 6 months. Top 3 app in ”Editors’ Choice” on Google Play