Ivan Korolenko is an experienced frontend developer and tech leader currently working at Yandex in Dubai, United Arab Emirates. As a Frontend Tech Lead, he builds and manages critical systems that handle all of his business unit’s revenue, making him responsible for some of the company’s most important technology.
Ivan has over 6 years of professional experience in web development. At Yandex, he leads the development of high-priority systems including customer verification (KYC), antifraud protection, billing systems, and authorization features. His work has helped increase company revenue by approximately 36% and improved client retention rates. He works closely with major partners like Microsoft and Amazon, ensuring their projects meet the highest standards.
Before joining Yandex, Ivan worked as a Senior Frontend Engineer at VTB, one of Russia’s largest banks, where he developed a web trading terminal similar to Bloomberg Terminal and corporate client onboarding systems. These projects won multiple international awards for their user interface and user experience design. His contributions significantly stabilized the projects and improved the codebase for better performance and maintainability.
Ivan has over 6 years of professional experience in web development. At Yandex, he leads the development of high-priority systems including customer verification (KYC), antifraud protection, billing systems, and authorization features. His work has helped increase company revenue by approximately 36% and improved client retention rates. He works closely with major partners like Microsoft and Amazon, ensuring their projects meet the highest standards.
Before joining Yandex, Ivan worked as a Senior Frontend Engineer at VTB, one of Russia’s largest banks, where he developed a web trading terminal similar to Bloomberg Terminal and corporate client onboarding systems. These projects won multiple international awards for their user interface and user experience design. His contributions significantly stabilized the projects and improved the codebase for better performance and maintainability.
Ivan specializes in modern web technologies including React. js, JavaScript, TypeScript, HTML, and CSS. He’s skilled at building complex, high-performance applications that can handle large amounts of traffic while maintaining security and stability. His approach focuses on creating clean, maintainable code that other developers can easily work with. Throughout his career, he has made crucial architectural decisions and optimized systems for significant performance improvements, including achieving a 60% performance boost at one of his previous positions.
As a tech lead, Ivan manages development teams, conducts code
reviews, and helps distribute tasks effectively. He regularly interviews and evaluates frontend candidates, helping new team members integrate into projects successfully. His leadership style emphasizes technical excellence while supporting team growth and collaboration. He provides technical expertise to team members and assists them in solving complex problems, ensuring the entire team operates at a high level.
Ivan has gained significant recognition in the tech community through various achievements. He has been featured in major media outlets including USA Today for his contributions to frontend development, showcasing how frontend engineers serve as architects of the internet. He is a senior member of IEEE Institute of Electrical and Electronics Engineers and belongs to the International Association of Honored Developers, prestigious organizations that recognize technical excellence.
Ivan has spoken at international tech conferences, most notably at HolyJS 2020 Piter, where he presented on lambda calculus. This conference has featured other notable speakers like Ryan Dahl, the creator of Node. js, and Dan Abramov, the creator of Redux, placing Ivan among respected voices in the JavaScript community. He has also served as a judge for AI talent hackathons and participated in program committees for technical conferences.
As a tech lead, Ivan manages development teams, conducts code
reviews, and helps distribute tasks effectively. He regularly interviews and evaluates frontend candidates, helping new team members integrate into projects successfully. His leadership style emphasizes technical excellence while supporting team growth and collaboration. He provides technical expertise to team members and assists them in solving complex problems, ensuring the entire team operates at a high level.
Ivan has gained significant recognition in the tech community through various achievements. He has been featured in major media outlets including USA Today for his contributions to frontend development, showcasing how frontend engineers serve as architects of the internet. He is a senior member of IEEE Institute of Electrical and Electronics Engineers and belongs to the International Association of Honored Developers, prestigious organizations that recognize technical excellence.
Ivan has spoken at international tech conferences, most notably at HolyJS 2020 Piter, where he presented on lambda calculus. This conference has featured other notable speakers like Ryan Dahl, the creator of Node. js, and Dan Abramov, the creator of Redux, placing Ivan among respected voices in the JavaScript community. He has also served as a judge for AI talent hackathons and participated in program committees for technical conferences.