• Think and work together in a self-organizing agile team • Contribute to collaborative design, development, and bug fixing efforts • Develop clean code, practice pair programming, and participate in code reviews • Cooperate with international customers and colleagues

• Create and maintain features in Web including integration scripts applications and be able to develop unit tests for the same features. • Responsible for investigating problems in applications in collaboration with support teams, backend teams and merchant teams. • Propose and do refactors. • Estimate efforts for tasks with a high level of accuracy. • Analyze large volumes of data to find possible problems and propose performance improvements. • Identify performance issues and propose solutions. • Participate in technical meetings and propose solutions to problems. • Create alarms in metrics systems used by the company. • Indicate new tools and technologies. • Support new developers on company and train them on the development process, patterns and features • Participate in functional meetings with non-engineering teams with knowledge about all front end features and with skills to propose solutions • Document features in the available tool • Create integrated tests in the tool provided • In refinement meetings, analyze all proposals and be able to define the best solution • Be able to participate in war rooms and create an action plan

• Write well-designed, testable, and scalable code in a timely manner; • Take part in the full development cycle and ensure smooth development and cooperation between the dev team and product owners from sprint planning to release cycles.

• Develop and maintain modern web applications using React. • Build reusable components using functional components and hooks. • Implement state management solutions (e.g., Redux / Redux Toolkit, Context API, or equivalent). • Integrate frontend applications with RESTful APIs, handling authentication, data fetching, errors, and edge cases. • Implement client-side routing, form handling, and validation. • Ensure responsiveness, accessibility, and cross-browser compatibility. • Optimize performance and rendering behavior. **API Integration & Browser Runtime** • Consume and manage data from REST APIs using appropriate client-side patterns. • Handle authentication tokens, session data, and API headers securely on the client. • Work with browser storage mechanisms such as: - Local Storage - Session Storage - Cookies (where applicable) • Manage caching, persistence, and state rehydration responsibly. • Handle browser-specific behaviors, refresh flows, and navigation states. **Advanced UI & Interaction Design** • Design and implement complex interactive UIs, including drag-and-drop interfaces. • Contribute to or build visual workflow or process designers, such as BPMN-style editors, no-code or flow-based builders. • Implement UI logic for node relationships, transitions, validation rules, and user interactions in visual editors. • Align UI models with backend workflow or process execution logic. **UI Quality & Delivery** • Work with UI frameworks or design systems (e.g., MUI, Ant Design, Tailwind, or custom systems). • Follow UI/UX best practices and maintain visual consistency. • Participate in code reviews and contribute to frontend standards. • Own frontend features from development through production release.