Open to opportunities

Oleksandr Zhinzher

@oleksandrzhinzher

Message

I build high-performance React products, AI automation, and scalable web platforms.

Zimbabwe

Message

What I'm looking for

I'm looking for remote opportunities where I can build high-performance, data-driven web products, improve critical user and business metrics, and contribute to AI-powered automation, scalable architecture, and engineering growth.

At EPAM Systems, I've delivered scalable ecommerce, medical visualization, and AI-powered developer tools. For AS Watson Group, I led Core Web Vitals work that reached 90+ Lighthouse scores and contributed to a 45% uplift in mobile conversion.

I've reduced application bundle size by 30%, improved time-to-interactive by 1.2 seconds, and lowered checkout cart abandonment by 10% through React architecture, SSR, code splitting, lazy loading, and UI/UX improvements. I also built a browser-based WebGL MRI viewer that renders 1GB+ volumetric datasets at 60fps while keeping patient data fully client-side.

More recently, I've architected an AI code-review platform with Node.js and AWS, and I build open-source TypeScript products including Nomad Lens and Graph Render. I enjoy sharing practical frontend performance knowledge, mentoring engineers, and helping teams ship reliable products faster.

Experience

Work history, roles, and key accomplishments

Senior Software Engineer

EPAM Systems

Jan 2019 - Jan 2026 (7 years)

Architected and developed an AI-powered code review platform using Node.js, AWS, and the OpenCode SDK. Led Core Web Vitals optimization efforts across the main storefront, achieving 90+ Lighthouse scores and contributing to a 45% uplift in mobile conversion rates.