Egor Grushin
Staff Frontend Engineer @Mts Group
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WORK HISTORY
Staff Frontend Engineer @Mts Group
Krasnodar, RU
Led frontend architecture and engineering workflows for React-based applications, boosting deployment frequency by 30% and cutting iteration cycles by 15% through improved dev tooling and testing strategy.• Developed an innovative, high-performance microservice solution that optimises product indexing across extensive taxonomies using a Directed Acyclic Graph (DAG) and lexicographical ordering, enabling rapid retrieval and scalability by eliminating the need for real-time re-sorting and reducing database load. Achieved substantial performance gains, reduced multiple recursive database calls to just one.• Built a cross-team component library and design system, accelerating UI delivery by 40% and ensuring consistent UX across 3 applications. Created a fast local preview/test setup for seamless integration.• Migrated frontend to GraphQL with codegen tooling, introducing auto-generated types, queries, and mutations to eliminate boilerplate and improve type safety and developer velocity.• Engineered a lightning-fast deployment pipeline for React applications using runtime environment injection — slashed its startup time to 9s, cut deployment duration by 70%, and reduced CI/CD resource usage by 99%. Enabled real-time critical bug fix rollouts, accelerated release speed by hours per cycle, and saved ~2 engineer-hours per release, directly reducing downtime risks and operational costs.• Improved search UX by co-designing a backend full-text search engine, handling 2500+ RPS with no external dependencies, giving frontend full control over ranking and relevance.• Improved frontend responsiveness by 3.6x, by designing a strategy to flatten data and pre-process product relationships, reducing frontend latency from 400ms to 110ms and increasing engagement through faster page loads and better perceived performance.
EDUCATION
Kuban State University of Technology (KubSUT)
Bachelor of Engineering - BE, Applied Informatics
ABOUT EGOR GRUSHIN
I\'m a hands-on Staff Frontend Engineer with over 13 years of experience delivering high-performance, scalable, and user-focused web applications used by millions. My expertise lies in React, TypeScript, and complex UI architecture — from building full-featured design systems to optimizing mission-critical CI/CD pipelines that slash deployment times and unlock real-time release capabilities.I love solving performance bottlenecks, reducing iteration cycles, and designing systems that scale cleanly across teams and users. The more complex the task, the more excited I am by the challenge it brings. UK Global Talent Visa Holder — eligible to work in the UK without sponsorship. I\'m actively seeking new career opportunities. Feel free to connect via LinkedIn or contact me directly at e••••••••@gmail.comSkills: React, TypeScript, JavaScript, Redux, GraphQL, RxJS, Angular, Apollo, Vite, Webpack, Tailwind, Jest, Playwright, HTML5, CSS3, SASSAlso experienced with: Docker, Kubernetes, AWS (S3, CDN), GitHub Actions, CI/CD, REST, Kafka, CQRS, MongoDB, Event-Driven Systems, System Analysis, : Creator of a production-used open source library for CRUD state management in frontend apps (Redux/Flux style) — used in large projects at EPAM and MTS Group Built cross-team design system component library — accelerated UI delivery by 40% Migrated frontend to GraphQL with codegen — improved type safety and dev speed Created deployment solution — cut startup time to 9s, reduced CI/CD load by 99% Improved responsiveness 3.6x by flattening and pre-processing data Developed universal React modules for multiselects and dropdowns — reduced duplicated logic Engineered real-time UI sync (WebRTC + Redux) for collaborative features Built high-performance hierarchy module for rendering millions of rows Proposed a high-performance full-text search mechanism capable of handling 2500 RPS without third-party search engines Mentored frontend and backend developers, led 200+ technical interviews🧑 Speaker at GDG Krasnodar DevFest and local meetups Experience working with enterprise, startup, and international clients
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