Available to hire
Hi, I’m Yevhen Yevstratov, a frontend developer with 5+ years of commercial experience, specializing in React and Next.js. I excel at UI implementation, responsive design, and maintaining scalable front-end systems. I’ve delivered MVPs and shipped highly interactive, accessible user interfaces that improve engagement and conversion.
I also bring experience building Chrome extensions, working on backend tasks, manual testing, and mentoring juniors. I thrive in collaborative teams of 2–30 members and love turning complex requirements into clean, delightful user experiences.
Skills
Experience Level
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Language
English
Fluent
Ukrainian
Fluent
Russian
Advanced
Work Experience
Frontend Developer at Blackrock Software
January 1, 2025 - PresentRedesigned and developed a user management service for virtual cards and crypto assets, improving system performance by 38%. Built highly interactive and animated landing pages, increasing user engagement and boosting conversion rates by 27.2%. Refactored critical components, optimized state management, reduced memory leaks, and implemented robust error boundaries to increase crash-free users from 85.6% to 94.1%. Improved overall application performance by 2x through rendering optimizations and data processing strategies. Successfully launched a product in 1.5 months.
Frontend Developer at NIKCODE
March 1, 2025 - October 2, 2025Accelerated frontend development by implementing an Admin Dashboard Template (like Vuexy), enabling MVP development twice as fast. Developed a custom browser extension for enterprise password management, enhancing security. Worked on AI-powered chat systems, tables, the Lexical rich text editor, and animated landing pages to deliver engaging experiences. Launched 3 MVPs within 5 months and mentored junior developers.
Frontend Developer at CROTUL/DELTA PLATA
August 1, 2024 - October 2, 2025Developed a Next.js application enabling users to create customizable business forms, increasing user interaction by 42.1% and form submission rates by 25.4%. Integrated WhatsApp API for real-time feedback on form submissions. Built an admin panel with user management, simple analytics, and environment variable management. Enabled Webflow theme uploads for customized routes, expanding design flexibility and improving user experience.
Frontend Developer at DEVCODING WEB STUDIO
December 1, 2023 - October 2, 2025Revamped Online Casino Website: contributed to the development of an online casino site, redesigning modal windows and forms, improving user engagement by 28.4% and reducing bounce rates by 15.4%. Ensured compatibility through manual testing across 15+ devices and 5 screen orientations, reducing mobile-related issues by 22%. Bug tracking with Trello and initiated team collaboration to address design inconsistencies.
Frontend Developer at Freelance
November 1, 2020 - October 2, 2025Provided frontend development services on various projects, delivering clean, responsive UI components and MVPs for clients.
Frontend Developer at BLACKROCK SOFTWARE
January 1, 2025 - PresentRedesigned and developed a user management service for virtual cards and crypto assets, improving system performance by 38%. Built highly interactive and animated landing pages, increasing user engagement and boosting conversion rates by 27.2%. Refactored critical components to reduce memory leaks and implemented better error boundaries to raise crash-free users from 85.6% to 94.1%. Improved application performance by 2x through optimized rendering strategies, data storage, and processing approaches. Successfully launched one product in 1.5 months.
Frontend Developer at NIKCODE
March 1, 2025 - October 2, 2025Accelerated frontend development by implementing an Admin Dashboard Template like Vuexy, enabling MVPs to be built twice as fast. Developed a custom browser extension similar to Bitwarden for enterprise password management. Worked with AI-powered chat systems, Lexical, and interactive landing pages, ensuring seamless functionality and engaging user experiences. Launched 3 MVPs within 5 months. Mentored junior developers, guiding them in best practices and improving their technical skills.
Frontend Developer at CROTUL/DELTA PLATA
August 1, 2024 - October 2, 2025Developed a Next.js application allowing users to create customizable business forms, increasing user interaction by 42.1% and form submission rates by 25.4%. Integrated WhatsApp API for real-time feedback on form submissions. Streamlined admin operations with an admin panel featuring user management, simple analytics, and environment variable management. Enabled Webflow theme uploads for customized routes, expanding design flexibility and improving user experience.
Frontend Developer at DEVCODING WEB STUDIO
December 1, 2023 - October 2, 2025Revamped Online Casino Website by redesigning modal windows and forms, improving user engagement by 28.4% and reducing bounce rates by 15.4%. Conducted manual testing across 15+ devices and 5 screen orientations, ensuring a seamless user experience and reducing mobile-related issues by 22%. Used Trello for bug reporting and tracking, improving project workflow and reducing bug resolution time.
Frontend Developer at FREELANCE
November 1, 2020 - October 2, 2025Provided frontend development services, delivering UI components, responsive layouts, and MVP-focused features for various clients.
Frontend Developer at BLACKROCK SOFTWARE
January 1, 2025 - PresentRedesigned and developed a user management service for virtual cards and crypto assets, improving system performance by 38%. Built highly interactive and animated landing pages, increasing user engagement and boosting conversion rates by 27.2% through optimized UI/UX and animations. Increased crash-free users rate from 85.6% to 94.1% by refactoring critical components, optimizing state management, reducing memory leaks, and implementing better error boundaries to prevent app crashes. Improved application performance by 2x through optimized rendering strategies, data storage, and processing approaches. Successfully launched one of the company's products in just 1.5 months, ensuring a timely and smooth release.
Frontend Developer at NIKCODE
March 1, 2025 - October 2, 2025Accelerated frontend development by implementing an Admin Dashboard Template like Vuexy, enabling MVPs to be developed twice as fast and significantly reducing development time. Developed a custom browser extension similar to Bitwarden for a business-focused password management platform. Worked with complex components such as AI-powered chat systems, tables, the Lexical rich text editor, and interactive animated landing pages, ensuring seamless functionality and engaging user experiences. Successfully launched 3 MVPs within 5 months, delivering high-quality products on time. Mentored junior-level developers, guiding them in best practices and improving their technical skills.
Frontend Developer at CROTUL/DELTA PLATA
August 1, 2024 - October 2, 2025Enhanced user engagement by developing a Next.js application allowing users to create customizable business forms, increasing user interaction by 42.1% and form submission rates by 25.4%. Improved feedback mechanism by integrating the WhatsApp API for real-time feedback on form submissions. Streamlined admin operations by building an admin panel with user management, simple analytics, and environment variable management. Enabled Webflow theme uploads for customized routes, expanding design flexibility and improving user experience.
Frontend Developer at DEVCODING WEB STUDIO
December 1, 2023 - October 2, 2025Revamped an online casino website, redesigning modal windows and forms, improving user engagement by 28.4% and reducing bounce rates by 15.4%. Ensured compatibility through manual testing across 15+ devices and 5 screen orientations, reducing mobile-related issues by 22%. Utilized Trello for bug reporting and tracking, improving project workflow and reducing bug resolution time by 20%. Initiated team collaboration by identifying new bugs and design inconsistencies.
Freelance Frontend Developer at FREELANCE
November 1, 2020 - October 2, 2025Provided freelance frontend development services for various clients, delivering responsive UIs and optimized experiences.
Frontend Developer at BLACKROCK SOFTWARE
January 1, 2025 - PresentRedesigned and developed a user management service for virtual cards and crypto assets, improving system performance by 38%. Built highly interactive and animated landing pages, increasing user engagement and boosting conversion rates by 27.2%. Improved crash-free user rate from 85.6% to 94.1% by refactoring critical components, optimizing state management, reducing memory leaks, and implementing better error boundaries to prevent app crashes. Improved application performance by 2x through optimized rendering strategies and data processing. Successfully launched one of the company’s products in just 1.5 months.
Frontend Developer at NIKCODE
March 1, 2025 - October 2, 2025Accelerated frontend development by implementing an Admin Dashboard Template (Vuexy-like). Developed a custom browser extension for a business-focused password management platform. Worked with AI-powered chat systems, tables, Lexical rich text editor, and interactive animated landing pages. Successfully launched 3 MVPs within 5 months and mentored junior developers.
Frontend Developer at CROTUL/DELTA PLATA
August 1, 2024 - October 2, 2025Enhanced user engagement by developing a Next.js application for customizable business forms. Integrated WhatsApp API for real-time feedback. Built an admin panel with user management, simple analytics, and environment variable management. Enabled Webflow theme uploads for design flexibility and improved user experience.
Frontend Developer at DEVCODING WEB STUDIO
December 1, 2023 - October 2, 2025Revamped an online casino website by redesigning modal windows and forms, improving user engagement by 28.4% and reducing bounce rates by 15.4%. Conducted manual testing across 15+ devices and 5 screen orientations, ensuring a seamless user experience and reducing mobile-related issues by 22%. Used Trello for bug reporting and tracking, improving project workflow and reducing bug resolution time by 20%.
Frontend Developer at FREELANCE
November 1, 2020 - October 2, 2025Delivered frontend development services for various clients, building projects with React/Next.js and delivering MVPs. Collaborated with teams to turn requirements into polished UI components and responsive interfaces.
Frontend Developer at PNU UNIVERSITY
June 1, 2021 - October 2, 2025Enhanced Student Experience: Developed a Telegram chatbot for viewing the university timetable, greatly improving access to the schedule for students and teachers.
Education
at PNU University
December 1, 2019 - June 1, 2021 at PNU University
December 1, 2019 - June 1, 2021 at PNU UNIVERSITY
December 1, 2019 - June 1, 2021 at PNU UNIVERSITY
December 1, 2019 - June 1, 2021Qualifications
Industry Experience
Software & Internet, Media & Entertainment, Professional Services, Education
Skills
Experience Level
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
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