Valentyn Ivanov Email & Phone Number

San Francisco, California, United States

Led the end-to-end development of the React Native application, coordinating with the development, backend and QA teams for a smooth iOS deployment. Result: Achieved 20% increase in mobile user retention and 30% reduction in post-launch issues through robust quality control and testing process..Optimized data handling and app performance using React, AG Grid, GraphQL, and REST APIs, improving load times by 15% and ensuring responsive, fast data rendering across devices.Enhanced UI/UX through responsive design, resulting in a 20% boost in user engagement and positive feedback on app usability.Used TypeScript to simplify development and ensure code quality, contributing to a 40% faster development cycle and reduced bugs.

Kyiv, Ukraine

Developed scalable, high-performance frontend components using React and Redux in a SPA environment, reducing load times by 10% through code optimization.Collaborated with product teams to implement UX enhancements, increasing user satisfaction scores by 15% based on feedback and analytics.Contributed to code quality and consistency across the team by implementing best practices for testing and code reviews, enhancing the team’s productivity by 20%.

Development and successful launch of a React Native application, overseeing the full development lifecycle from initial concept to deployment.Spearheaded the development of a single-page application (SPA) using React, TypeScript, GraphQL, and Next.js.Implemented responsive design techniques to create mobile-compatible user interfaces, boosting mobile user engagement by 25%.

Kryvyi Rih, Dnipropetrovsk, Ukraine

Developed blockchain-related SPAs and mobile applications using React and React Native, achieving a 30% reduction in page load times.Enhanced app performance and user experience by implementing efficient state management through Redux, Saga, and Thunk, reducing user-reported issues by 25%.

Kryvyi Rih, Dnipropetrovsk, Ukraine

Designed and implemented responsive, user-centric web elements that aligned with project goals, improving overall user experience by 15%.Contributed to team knowledge sharing and code review processes, increasing the team’s code quality and productivity.