// Senior Frontend Developer

Leonid Belikov

High-performance web applications and browser-based media tools, built with React and TypeScript.

Leonid Belikov

01 / about

I'm a frontend developer with 8 years of experience, specializing in performance-critical web applications and in-browser media processing — including complex web-based video editing tools.

I like non-trivial engineering problems: heavy UI tools, media processing, data visualization.

Based in Belgrade, I work remotely with companies in Serbia and across Europe.

02 / expertise

  • Performance & media

    Web Workers and modern browser APIs to process large media files without blocking the UI.

  • Applied math

    2D/3D coordinate transformations, matrix operations and geometry for custom interactive elements.

  • Architecture

    Clean, maintainable codebases for heavy web platforms and complex UI tools.

  • Stack

    JavaScript · TypeScript · React · Zustand · Redux · React Query
    exploring: WebAssembly, Rust

03 / services

  • Websites & web applications

    From idea to production: responsive, accessible and fast interfaces.

  • Improvement & maintenance

    Fixing bugs, refactoring, performance improvements and new features for existing projects.

  • Third-party integrations

    Connecting analytics, CRM and other services to your website or app.

  • IT support

    Related technical help: deployment, hosting, domain and email setup.

04 / contact

Have a project in mind? Let's talk.