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Frontend developer with 4+ years of experience building high-performance, maintainable user interfaces using React/TypeScript, real-time systems, and complex UI components. Worked on large-scale data visualization, including medical ECG systems, with a focus on performance, UX, and stable architecture. Collaborates cross-functionally with PM, QA, DevOps, designers, and backend developers (teams up to 10 people). Has delivered real-time ECG visualization using Web Workers and real-time communication via WebSockets, optimized loading and processing performance, and ensured accuracy of medical visualizations through QA and stakeholder collaboration.…Frontend developer with 4+ years of experience building high-performance, maintainable user interfaces using React/TypeScript, real-time systems, and complex UI components. Worked on large-scale data visualization, including medical ECG systems, with a focus on performance, UX, and stable architecture. Collaborates cross-functionally with PM, QA, DevOps, designers, and backend developers (teams up to 10 people). Has delivered real-time ECG visualization using Web Workers and real-time communication via WebSockets, optimized loading and processing performance, and ensured accuracy of medical visualizations through QA and stakeholder collaboration.

Pavel Borisov

Front-End Developer, Web Developer, Software Engineer, +2

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Frontend developer with 4+ years of experience building high-performance, maintainable user interfaces using React/TypeScript, real-time systems, and complex UI components. Worked on large-scale data visualization, including medical ECG systems, with a focus on performance, UX, and stable architecture. Collaborates cross-functionally with PM, QA, DevOps, designers, and backend developers (teams up to 10 people). Has delivered real-time ECG visualization using Web Workers and real-time communication via WebSockets, optimized loading and processing performance, and ensured accuracy of medical visualizations through QA and stakeholder collaboration.…Frontend developer with 4+ years of experience building high-performance, maintainable user interfaces using React/TypeScript, real-time systems, and complex UI components. Worked on large-scale data visualization, including medical ECG systems, with a focus on performance, UX, and stable architecture. Collaborates cross-functionally with PM, QA, DevOps, designers, and backend developers (teams up to 10 people). Has delivered real-time ECG visualization using Web Workers and real-time communication via WebSockets, optimized loading and processing performance, and ensured accuracy of medical visualizations through QA and stakeholder collaboration.

Available to hire

Frontend developer with 4+ years of experience building high-performance, maintainable user interfaces using React/TypeScript, real-time systems, and complex UI components. Worked on large-scale data visualization, including medical ECG systems, with a focus on performance, UX, and stable architecture.

Collaborates cross-functionally with PM, QA, DevOps, designers, and backend developers (teams up to 10 people). Has delivered real-time ECG visualization using Web Workers and real-time communication via WebSockets, optimized loading and processing performance, and ensured accuracy of medical visualizations through QA and stakeholder collaboration.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Language

Russian

Fluent

English

Beginner

Work Experience

Frontend Developer at ECG Analysis Startup

May 1, 2025 - May 1, 2026

Developed a real-time ECG visualization and analysis system for medical professionals. Built processing pipelines using Web Workers to handle large medical data streams (up to 2 million points) with stable performance. Implemented signal processing functions such as noise filtering and heart rate analysis, and optimized UI for medical usability and data readability. Key improvements included accelerating data loading by 30%, improving signal processing and analysis by 50%, and reducing signal re-rendering time by 80% to make ECG interactions faster and easier for clinicians. Ensured reliability through unit and integration testing, collaborated with QA to verify ECG visualization accuracy, and worked closely with designers, analysts, and medical specialists. Participated in feature planning, prioritization, and product improvements; also contributed to partial migration to mobile platforms.

Front-end Developer

May 1, 2025 - May 1, 2026

Developed a real-time ECG analysis and visualization client application for medical professionals. Built and maintained front-end architecture using React. Implemented real-time ECG visualizations using Web Workers to ensure stable processing of large medical data streams (up to 2 million points). Implemented signal processing functions including noise filtering and heart rate analysis. Optimized UI for medical usability, improved data loading by ~30%, accelerated signal processing and analysis by ~50%, and reduced signal re-rendering time by ~80%, improving readability for clinical users. Collaborated with QA to verify visualization accuracy and coordinated with designers, analysts, and medical specialists. Contributed to feature planning and prioritization, and participated in partial migration to mobile platforms.

Frontend Developer at Gabbian Startup

September 1, 2023 - November 1, 2024

Worked on a collaboration platform for micro-apps focused on user interaction and data management. Developed a files system supporting uploads, folder structure, access control, search, and file previews. Implemented a real-time chat using WebSockets for instant message delivery and state updates without page refreshes. Created interactive tables and data visualization tools for large datasets, and built a desktop version of the application using Electron. Developed 20+ reusable UI components based on MUI and Figma designs. Participated in code reviews and refactoring of legacy code, collaborating with QA and product to speed up the bug-fix cycle. Contributed to partial migration to mobile platforms.

Front-end Developer at Gabbian Startup

September 1, 2023 - November 1, 2024

Worked on a collaboration platform for micro-apps enabling user interaction and data management. Developed an in-app file system supporting uploads, folder structure, access control, search, and file previews. Implemented real-time chat using WebSockets with instant message delivery and state updates without page refreshes. Created interactive tables and data visualization tools for large datasets. Built a desktop version using Electron and developed 20+ reusable UI components based on MUI and Figma designs. Participated in code reviews and refactoring of legacy code and collaborated with QA and the product team to accelerate the bug-fix cycle. Also contributed to partial migration work for mobile platforms.

Front-end Developer

December 1, 2022 - September 1, 2023

Developed a responsive front-end for an e-commerce project including product catalog, filtering, product cards, and cart/state management. Implemented 10+ screens and 30+ UI components using React, TypeScript, Redux, and MUI. Optimized desk-to-mobile screen resolutions. Developed a cryptocurrency platform interface with real-time market data updates and configured data updates without page refreshes to improve relevance of displayed information. Built a multiplayer online game front-end using React, implementing user interaction scenarios based on events (game states, user actions, UI updates). Optimized application state structure to simplify support for game logic and UI components.

Frontend Developer at Photo Soft

January 1, 2022 - December 1, 2022

Developed a frontend for a platform connecting photographers and models. Implemented interfaces using Figma mockups and adapted them to different screen resolutions. Created profile pages, user cards, forms, and basic user flows. Configured state management using Redux and a reusable component structure.

Frontend Developer

January 1, 2022 - September 1, 2023

Developed responsive frontend for an e-commerce project including product catalog, filtering, product cards, and cart/state management. Built 10+ screens and 30+ UI components using React, TypeScript, Redux, and MUI. Optimized UI for desktop/mobile solutions, developed a cryptocurrency platform interface with real-time market data updates, and configured data updates without page refresh to improve relevance. Implemented a multiplayer online game frontend using React with event-driven UI updates (game states, user actions, and UI updates) and optimized application state structure to simplify support for game logic and UI components.

Front-end Developer at PhotoSoft

January 1, 2022 - December 1, 2022

Developed a front-end for a platform connecting photographers and models. Implemented interfaces using Figma mockups and adapted layouts to different resolutions. Created profile pages, user cards, forms, and basic user flows. Configured state management using Redux and a reusable component structure.