Developer -GUI development with Sencha (Ext JS)

Description We are a fast‑growing financial services organization dedicated to delivering secure, scalable, and high‑performance technology solutions. As we continue to expand our digital product ecosystem, we are seeking a talented Hands‑On GUI Developer with strong Sencha (Ext JS) expertise to join our engineering team. This role is ideal for someone who thrives in a dynamic environment, enjoys building sophisticated user interfaces, and wants to contribute to mission‑critical financial applications. This position can be contract/project base as well Responsibilities Design, develop, and maintain high‑quality GUI components using Sencha Ext JS. Build responsive, scalable, and intuitive user interfaces for complex, data‑intensive web applications. Collaborate closely with product managers, UX designers, and backend engineers to deliver seamless end‑to‑end user experiences. Translate UI/UX wireframes into fully functional, production‑ready front‑end modules. Optimize front‑end performance, including rendering efficiency, load times, and overall responsiveness. Develop reusable components, widgets, and UI patterns aligned with the product’s design system. Troubleshoot UI issues, resolve cross‑browser inconsistencies, and ensure high visual and functional quality. Participate in code reviews and contribute to front‑end best practices and coding standards. Integrate front‑end components with RESTful APIs and backend services. Stay current with Sencha updates, JavaScript ecosystem trends, and emerging front‑end technologies. Requirements 3–7+ years of professional front‑end development experience. Strong, hands‑on expertise with Sencha Ext JS and modern JavaScript (ES6+). Proven experience building complex, data‑driven GUIs and enterprise‑grade applications. Solid understanding of HTML5, CSS3, responsive design, and cross‑browser compatibility. Experience working with REST APIs, JSON, and asynchronous data handling. Familiarity with MVC/MVVM patterns as implemented in Sencha. Strong debugging skills and proficiency with browser developer tools. Ability to write clean, modular, maintainable code with a focus on performance. Experience working in Agile/Scrum environments. Excellent communication skills and ability to collaborate with distributed teams.