
Liad Yosef
Verified Expert in Engineering
Full-stack Engineer and Developer
Tel Aviv-Yafo, Israel
Toptal member since August 2, 2023
Liad is a senior full-stack engineer, tech lead, and architect with over 15 years of experience. He has led the entire front-end development team at Duda, building very complex React apps from scratch, including handling requirements, design, and all components. He is an expert in building web apps, focusing on code structure, infrastructure, UI, UX, and performance. Liad is also an international keynote speaker specializing in React and web development.
Portfolio
Experience
- JavaScript - 13 years
- Web Applications - 13 years
- Full-stack Development - 13 years
- Web Development - 13 years
- CSS - 12 years
- React - 10 years
- Front-end Architecture - 9 years
- Node.js - 8 years
Availability
Preferred Environment
Visual Studio Code (VS Code), Linux, Web, Chrome, Chrome Developer Tools
The most amazing...
...project I've built is Duda's React app, now serving millions of people, in which I designed all components and handled infrastructure, processes, CSS, and SSR.
Work Experience
Lead Front-end Architect and Head of Front-end Engineering
Duda
- Developed the company's main React app, a website builder, from scratch, with 1,000 components. This project included handling the app's architecture, infrastructure, component library, design system, tooling, and testing.
- Built and led the entire front-end organization and managed over 30 front-end developers.
- Implemented React server-side rendering (SSR) for our pages in Node.js.
- Analyzed and vastly improved our web app performance, making Duda rank first among website builders according to Google metrics.
- Introduced TypeScript to the entire company, resulting in a vast improvement in cross-team development.
- Created an entire website editor from scratch, including the infrastructure code that later dozens of developers worked on. The editor is a very complex, drag-and-drop-based interface.
- Handled the company's microfrontend infrastructure to be used across the organization.
- Received the "Employee of the Year" award for several years.
Experience
Duda's Website Editor
I built the entire app on my own from scratch. Until today, dozens of developers keep building on the infrastructure I created.
App for Collaborative, Real-time, and Online Video Pub Quizzes
The app was a big success. It currently holds two to three games a week, with 150 to 200 participants in each game.
Government Web App Displaying Apartment Raffles in Israel
The web app was a huge success, obtaining 5,000 to 8,000 visitors daily. It has also had excellent media coverage, as it was featured in all of the central channels in Israel.
Building Three.js World Using Hand Gestures
Education
Master's Degree in Behavioral Economics
Reichman University - Herzliya, Israel
Bachelor's Degree in Economics
Tel Aviv University - Tel Aviv, Israel
Bachelor's Degree in Mathematics and Computer Science
Hebrew University of Jerusalem - Jerusalem, Israel
Certifications
Certificate in Data Science
Y-DATA School of Data Science
Skills
Libraries/APIs
React, Node.js, REST APIs, Three.js, WebRTC, TensorFlow, WebGL
Tools
GitHub, Webpack, Chrome Developer Tools, GreenSock
Languages
JavaScript, CSS, HTML, TypeScript, HTML5, Java, Python, C#
Paradigms
Refactoring
Frameworks
Next.js, Express.js, Chrome, Unity
Platforms
Amazon Web Services (AWS), Vercel, Visual Studio Code (VS Code), Linux, Web
Other
Front-end Architecture, Web Applications, Full-stack Development, Web Development, Technical Leadership, Public Speaking, Software Architecture, Architecture, Full-stack, Web Scraping, Scraping, Product Management, Asynchronous I/O, Performance, Email Templates, Responsive Email Templates, 3D, API Integration, Software Development, Algorithms, Economics, User Experience (UX), Consumer Behavior, User Behavior, Data Science, Artificial Intelligence (AI), Deep Neural Networks (DNNs), Machine Learning, WebSockets, 3D Animation
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