JavaScript Performance Optimization: Practical Techniques and Tools (with a focus on React)

2026-03-05 Български Event Website

📅 Date: 05.03.2026

🎙️ Speaker: Ivaylo Dimitrov – software engineer and technical trainer with over 8 years of experience in the JavaScript ecosystem, specializing in practical teaching and real-world solutions.

🔐 About the event:
This event is part of the JavaScript user group.

Join us for an in-depth session covering key aspects of JavaScript and React performance optimization including:

Introduction – the importance of performance in JavaScript and React apps; main challenges.
Analysis and profiling tools – Chrome DevTools, Lighthouse, React Profiler; identifying bottlenecks and memory leaks.
Rendering and DOM optimization – minimizing reflows and repaints; DOM manipulation techniques; React component specifics.
JavaScript code optimization – lazy loading, code splitting, debouncing, throttling, web workers; optimizing functions and hooks in React.
Memory management and garbage collection – how JS garbage collector works; avoiding memory leaks; typical React problems and solutions.
Async operations optimization – efficient Promises and async/await usage; fetch optimization; async operations in React components.
Front-end build process optimization – tree shaking, minification, bundling; tools like Webpack, Vite, Parcel; build optimizations specific to React.
Best practices & common anti-patterns – what to avoid and adopt in JS and React.
Demo/practical example – profiling and optimizing a React app; comparison with pure JS example.
Q&A session.

The event is free but requires prior registration.

💡 Organized by: DEV.BG, a specialized IT job board.
🔗 Event URL: https://dev.bg/event/javascript-performance-optimization-prakticheski-tehniki-i-instrumenti-s-aktsent-vurhu-react/

🎯 Suitable for:
JavaScript developers, React engineers, frontend developers, technical trainers and all interested in advancing their performance optimization skills.

💼 Sponsors: SiteGround