Senior Back-End Developer (NodeJS + AWS + Fastly CDN)

Description

Job Summary: We are seeking a Senior Back-End Developer for an international project focused on scalable architectures in high-traffic cloud environments, cache optimization, and CDN migration. Key Highlights: 1. 100% English-language international project 2. Modern, technically demanding technological environment 3. Focus on performance and scalability DESCRIPTION BEIGAR, a consultancy specializing 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 100% English-speaking environment with emphasis on scalable architectures in 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 via TTL, selective invalidations, and cache tagging. * Evolve the current Salesforce Native Forms integration (iframe-based) into a scalable custom API solution, addressing security, authentication, SSO, performance, and compatibility with AEM EDS. * Configure and lead the CDN migration from Adobe Managed CDN to Fastly. * Define cache policies, TTLs, 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 employment with the end client. * 100% English-language international project. * Modern, technically demanding technological environment. * Hybrid work model in Madrid (percentage to be defined). * Competitive compensation based on experience. If you seek a technical challenge within an international environment focused 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). * Availability for immediate start.