Job Summary: We are seeking a Senior Back-End Developer for an international project in a fully English-speaking environment, focused on scalable architectures and high-traffic cloud environments. Key Highlights: 1. 100% English-language international project 2. Modern, technically demanding technological environment 3. Focus on performance and scalability DESCRIPTION BEIGAR, a consultancy specialized in building and upskilling technical teams and a strategic partner for high-impact technology projects, is seeking a **Senior Back-End Developer** to join a private client directly on an international project. This is an immediate-start position, operating in a fully English-speaking environment with a focus on scalable architectures within high-traffic cloud environments. #### **Main Responsibilities** * Define and implement strategies to optimize cache management at the event integration layer, reducing the need for daily cache purges through TTL, selective invalidations, and cache tagging. * Evolve the current Salesforce Native Forms integration (iframe-based) into a scalable custom API solution, considering security, authentication, SSO, performance, and compatibility with AEM EDS. * Configure and lead the CDN migration from Adobe Managed CDN to Fastly. * Define cache policies, TTL, invalidation rules, and SSO configuration. * Apply best practices for optimization in high-traffic environments. * Technical communication in English with international teams and clients. #### **What We Offer** * Direct hiring by the end client. * 100% English-language international project. * Modern, technically demanding technological environment. * Hybrid work mode in Madrid (percentage to be defined). * Competitive compensation commensurate with experience. If you are looking for a technical challenge in an international setting with a strong focus on performance and scalability, we want to meet you. REQUIREMENTS * Solid back-end development experience with **NodeJS**. * Experience working in **AWS** environments. * Experience with CDNs in projects, especially **Fastly**. * Advanced knowledge of caching strategies (TTL, invalidations, cache tagging). * Experience with SSO and performance optimization in high-traffic environments. * High level of English (mandatory for technical communication and documentation). * Immediate availability.