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I’m Sergei Klokov, a React and React Native engineer focused on building scalable, fast, and user-friendly applications. I specialize in React, React Native, TypeScript, Redux, Node.js, MongoDB, Firebase, AWS, and deploying backends and frontends that perform well at scale. I enjoy turning complex requirements into elegant, maintainable solutions and shipping products that real users love. Currently, I lead end-to-end development at Domi in Thailand, focusing on mobile apps, backend architecture, and lead-generation flows. Previously, I built enterprise React apps at Rostelecom, crafted client-facing UIs at Erachain, and contributed to data-rich dashboards and analytics tooling. I’m constantly learning and embracing new technologies to deliver robust and delightful software experiences.…I’m Sergei Klokov, a React and React Native engineer focused on building scalable, fast, and user-friendly applications. I specialize in React, React Native, TypeScript, Redux, Node.js, MongoDB, Firebase, AWS, and deploying backends and frontends that perform well at scale. I enjoy turning complex requirements into elegant, maintainable solutions and shipping products that real users love. Currently, I lead end-to-end development at Domi in Thailand, focusing on mobile apps, backend architecture, and lead-generation flows. Previously, I built enterprise React apps at Rostelecom, crafted client-facing UIs at Erachain, and contributed to data-rich dashboards and analytics tooling. I’m constantly learning and embracing new technologies to deliver robust and delightful software experiences.

Sergei Klokov

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I’m Sergei Klokov, a React and React Native engineer focused on building scalable, fast, and user-friendly applications. I specialize in React, React Native, TypeScript, Redux, Node.js, MongoDB, Firebase, AWS, and deploying backends and frontends that perform well at scale. I enjoy turning complex requirements into elegant, maintainable solutions and shipping products that real users love. Currently, I lead end-to-end development at Domi in Thailand, focusing on mobile apps, backend architecture, and lead-generation flows. Previously, I built enterprise React apps at Rostelecom, crafted client-facing UIs at Erachain, and contributed to data-rich dashboards and analytics tooling. I’m constantly learning and embracing new technologies to deliver robust and delightful software experiences.…I’m Sergei Klokov, a React and React Native engineer focused on building scalable, fast, and user-friendly applications. I specialize in React, React Native, TypeScript, Redux, Node.js, MongoDB, Firebase, AWS, and deploying backends and frontends that perform well at scale. I enjoy turning complex requirements into elegant, maintainable solutions and shipping products that real users love. Currently, I lead end-to-end development at Domi in Thailand, focusing on mobile apps, backend architecture, and lead-generation flows. Previously, I built enterprise React apps at Rostelecom, crafted client-facing UIs at Erachain, and contributed to data-rich dashboards and analytics tooling. I’m constantly learning and embracing new technologies to deliver robust and delightful software experiences.

Available to hire

I’m Sergei Klokov, a React and React Native engineer focused on building scalable, fast, and user-friendly applications. I specialize in React, React Native, TypeScript, Redux, Node.js, MongoDB, Firebase, AWS, and deploying backends and frontends that perform well at scale. I enjoy turning complex requirements into elegant, maintainable solutions and shipping products that real users love.

Currently, I lead end-to-end development at Domi in Thailand, focusing on mobile apps, backend architecture, and lead-generation flows. Previously, I built enterprise React apps at Rostelecom, crafted client-facing UIs at Erachain, and contributed to data-rich dashboards and analytics tooling. I’m constantly learning and embracing new technologies to deliver robust and delightful software experiences.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Language

English

Advanced

Russian

Fluent

Work Experience

React Native Developer at Domi

February 1, 2023 - Present

Built and launched a cross-platform mobile app (iOS & Android) using React Native. Designed and developed full-stack architecture (Node.js, MongoDB, Firebase, AWS S3). Implemented property listing system with search, filtering, and image storage. Designed lead-generation user flows (contacting property owners/agents). Managed app deployment via Apple Developer Program and Google Play Console. iOS: https://apps.apple.com/th/app/domi/id6599859105; Android: https://play.google.com/store/apps/details?id=com.sergeirndev.tian

Senior ReactJS Engineer at Rostelecom – Russia's Largest Telecom Company

October 1, 2020 - February 1, 2026

Developed and maintained enterprise SPA applications used for internal telecom operations. Built complex data visualization tools (maps, charts, dashboards) to support decision-making. Implemented scalable frontend architecture using React, Redux, and TypeScript. Improved application performance and maintainability through code optimization and refactoring. Developed interactive UI components with complex business logic (forms, diagrams, analytics tools). Collaborated with backend teams to integrate APIs and ensure efficient data flow.

Frontend React Developer at Erachain Blockchain Platform

May 1, 2017 - October 1, 2020

Developed user interfaces for internal and client-facing applications using React. Rapid MVPs and prototypes to validate product ideas. Translated Figma designs into functional UI with focus on speed and usability. Implemented dynamic forms, data-driven components, and API integrations. Iterated on features based on user and stakeholder feedback. Contributed to continuous improvement of existing UI components and workflows.