Looks like you have JavaScript disabled. For the full Twine experience, you will need to re-enable it.

Experienced Senior Software Engineer with 7+ years of expertise in building high-performance web and mobile applications. Specialized in React, React Native, and modern JavaScript ecosystems, with a strong focus on delivering scalable, user-centric solutions. Proven track record of leading frontend development, optimizing performance, and collaborating with cross-functional teams in fast-paced environments.…Experienced Senior Software Engineer with 7+ years of expertise in building high-performance web and mobile applications. Specialized in React, React Native, and modern JavaScript ecosystems, with a strong focus on delivering scalable, user-centric solutions. Proven track record of leading frontend development, optimizing performance, and collaborating with cross-functional teams in fast-paced environments.

Roman Alekseev

Front-End Developer, Web Developer, Full Stack Developer, +2





Experienced Senior Software Engineer with 7+ years of expertise in building high-performance web and mobile applications. Specialized in React, React Native, and modern JavaScript ecosystems, with a strong focus on delivering scalable, user-centric solutions. Proven track record of leading frontend development, optimizing performance, and collaborating with cross-functional teams in fast-paced environments.…Experienced Senior Software Engineer with 7+ years of expertise in building high-performance web and mobile applications. Specialized in React, React Native, and modern JavaScript ecosystems, with a strong focus on delivering scalable, user-centric solutions. Proven track record of leading frontend development, optimizing performance, and collaborating with cross-functional teams in fast-paced environments.

Available to hire

Experienced Senior Software Engineer with 7+ years of expertise in building high-performance web and mobile applications. Specialized in React, React Native, and modern JavaScript ecosystems, with a strong focus on delivering scalable, user-centric solutions. Proven track record of leading frontend development, optimizing performance, and collaborating with cross-functional teams in fast-paced environments.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Work Experience

Senior Software Engineer at Avenga

May 1, 2022 - January 1, 2026

Led development of mobile and web applications using React and React Native, delivering scalable and high-performance solutions. Designed and implemented cross-platform mobile features for iOS and Android, improving user engagement and performance. Collaborated with product managers and designers to deliver intuitive, user-focused UI/UX. Optimized application performance, reducing load times and improving responsiveness across devices. Mentored junior developers and contributed to code reviews, improving overall code quality and team productivity.

Frontend Engineer at Avenga

November 1, 2018 - May 1, 2022

Developed and maintained complex web applications using React.js and TypeScript. Integrated REST APIs and improved data handling across frontend systems. Implemented reusable components and scalable architecture for long-term maintainability. Worked in Agile teams to deliver features on time and within scope.

Frontend Developer at Web-systems.solutions

August 1, 2015 - November 1, 2018

Developed complex, interactive web applications using JavaScript, HTML5, and CSS3. Converted UI/UX designs into fully functional frontend components, ensuring pixel-perfect implementation. Implemented dynamic forms, dashboards, and data tables for client-facing web applications. Integrated applications with REST APIs, ensuring smooth data flow between frontend and backend.

Frontend Developer at WebEx

April 1, 2015 - August 1, 2015

Developed web interface components and assisted with frontend bug fixes and updates. Gained early experience with JavaScript and HTML/CSS frameworks in client projects.