Frontend Developer - Hybrid The salary on offer for this role is £55,000 - £65,000 per annumHybrid - Enfield, London - 3 days per week We''re seeking a Frontend Developer to join our client''s team to build and maintain the development and upkeep of our E-commerce user interface. This role is key to delivering a unified, high-performance customer experience across all channels. Proficiency in modern JavaScript frameworks, client-side security, and mobile deployment techniques is required.Responsibilities andamp; SkillsDevelop and maintain high-quality, responsive user interfaces for web and mobile using HTML5, JavaScript (ES6+), and advanced CSS.Create reusable components and design systems to ensure consistency, accessibility, and scalability across all digital channels.Apply modern styling techniques (CSS Grid, Flexbox, SASS/LESS) and optimise performance for Core Web Vitals.Build and deploy cross-platform mobile applications (iOS andamp; Android) using frameworks such as React Native or Flutter.Implement secure authentication flows, protect against common vulnerabilities (XSS, CSRF), and adhere to OWASP best practices.Integrate E-commerce tools and APIs (eg, Klaviyo, Yotpo) for personalised content and loyalty features.Manage complex application state using libraries like Redux or Context.Ensure robust testing through unit, integration, and end-to-end automation.Interested? Please submit your updated CV to Emma Siwicki at Crimson for immediate consideration. Not interested