Frontend Developer (Ext JS)

About the role

Synechron is looking for a skilled Front‑End Developer with deep expertise in Ext JS to create high‑performance web applications. You will work closely with cross‑functional teams to deliver rich, responsive user interfaces that meet the needs of our global financial services clients.

Key responsibilities

• Design, develop, and maintain web applications using the Ext JS (Sencha) framework.
• Build responsive, interactive, and reusable UI components.
• Ensure cross‑browser compatibility and optimize performance.
• Collaborate with backend developers to integrate REST APIs and services.
• Debug, troubleshoot, and enhance existing UI applications.
• Follow best practices for UI/UX, code quality, and security.

Required profile

• Strong experience with JavaScript, HTML5, and CSS3.
• Hands‑on expertise in Ext JS (Sencha) and MVC/MVVM architecture.
• Good understanding of REST API integration.
• Familiarity with version‑control systems, particularly Git.

Required skills

• JavaScript
• HTML5
• CSS3
• Ext JS (Sencha framework)
• MVC/MVVM architecture
• REST APIs
• Git
• React (optional)
• Angular (optional)
• Webpack (optional)
• Sencha Cmd (optional)