• Develop modern, scalable frontend interfaces with a focus on SPAs. • Build screens from scratch based on prototypes (e.g., Figma), ensuring visual and behavioral fidelity. • Implement dashboards, filters and interactive data visualizations. • Develop responsive, accessible interfaces for multiple user profiles. • Integrate with REST APIs (mocked and real). • Work decoupled from the backend using mock servers. • Participate in agile squads with incremental deliveries (sprints). • Contribute to unit tests and code quality. • Support the design and evolution of the frontend architecture. • Ensure frontend application quality, performance and scalability. • Follow best practices for componentization, modularization and code reuse. • Maintain versioning standards (Git, GitFlow, PRs, code review). • Apply frontend security best practices (token and session management, etc.). • Collaborate with UX/UI and Product teams on technical prioritization. • Ensure adherence to corporate design systems. • Support automation of builds, deployments and continuous integration (Azure DevOps). • Promote maintainability, testability and ongoing evolution of the codebase.

• Build and ship features for sportsbook, casino, and fantasy apps using React Native • Implement complex UI: market layouts, betting slips, player props, lobby experiences • Create physics-based animations and gesture-driven interactions (carousel pagers, radial controls, animated transitions) • Work with canvas-based graphics for player cards, game visualizations, and dynamic effects • Contribute to our theme-based design system with 100+ shared components • Build and maintain WebSocket subscriptions for live odds, match updates, and user notifications • Implement state synchronization between real-time streams and local stores • Handle deep linking from push notifications, attribution links, and web referrals • Integrate payment flows: in-app purchases, bank transfers, card entry with verification • Debug and fix platform-specific issues across iOS, Android, and web • Optimize performance: animation frame rates, render efficiency, memory management • Write worklet functions for animation-thread execution • Maintain E2E automation tests and contribute to CI/CD pipelines

• Build scalable and maintainable frontend applications using modern frameworks (Svelte preferred) • Translate UX/UI designs into high-quality, reusable, and accessible code • Develop responsive interfaces optimized across devices and browsers • Implement key user flows such as authentication, consent, dashboards, and data access experiences • Collaborate closely with UX/UI designers, backend engineers, QA, and product stakeholders • Maintain consistency through reusable components and design system principles • Apply best practices in frontend architecture, state management, and performance optimization • Integrate with backend APIs securely and efficiently • Participate in code reviews and continuous improvement initiatives

• Participarás en iniciativas orientadas a la mejora de interfaces web y experiencia de usuario. • Contribuirás a la estructuración y administración de entornos colaborativos en SharePoint Online. • Contribuirás a la gestión documental y a la creación de conocimiento técnico en Confluence. • Trabajarás bajo control de versiones con Git/GitHub y en coordinación con equipos multidisciplinarios mediante Jira y Microsoft 365.