Oleksandr Kolesnyk

Oleksandr Kolesnyk is a Senior UI Frontend Engineer with over 7 years of professional experience in modern web development and a deep expertise in JAMstack architecture.

JAMstack & Headless CMS Expert

Oleksandr is a recognized expert in JAMstack development, having built and deployed numerous production applications using this modern architecture. His deep technical knowledge spans the entire

JAMstack ecosystem:
• Static Site Generators & Frameworks: Next.js, Astro, Hugo, Jekyll
• Headless CMS Platforms: Strapi, Payload CMS, Contentful, Prismic, Sanity, DatoCMS, Headless WordPress
• Specializations: Scalable design systems, component libraries, mobile-first optimization, Core Web Vitals performance

With hands-on production experience across all major headless CMS platforms, Oleksandr brings practical insights into the strengths, limitations, and best use cases for each solution.

Industry Background

Throughout his career, Oleksandr has delivered high-impact projects across demanding industries:

• Fintech & Crypto — Trading platforms, DeFi interfaces, and crypto applications with a focus on real-time performance, security, and seamless user experience
• Sports Technology — Digital platforms developed in partnership with English Premier League clubs including Manchester City and Arsenal, as well as projects featuring internationally renowned athletes

Mentorship

With over 2 years of experience as a Frontend Instructor, Oleksandr has mentored 60+ students in modern web technologies. This background allows him to explain complex technical concepts in a clear, practical, and accessible way.

His articles on HeadlessCMS.info draw from real-world project experience — offering developers practical insights, honest comparisons, and actionable advice for choosing and implementing headless CMS solutions.