Job Summary: We are seeking a Senior Back-End Developer with experience in NodeJS and AWS for an innovative project in distributed environments, involving complex analysis and problem-solving tasks. Key Highlights: 1. Integration into an innovative project with cutting-edge technology 2. Opportunity to collaborate in an international team working 100% in English 3. Continuous professional development and learning of new tools We are looking for a Senior Back\-End Developer with experience in NodeJS and deployment on AWS, to join an innovative project in distributed environments. The position is hybrid in Madrid, with the possibility of partial remote work. The project is conducted 100% in English; therefore, a high level of spoken and written English is required. Responsibilities * Solid experience in NodeJS and AWS. * Experience in projects involving CDNs, especially Fastly. * High level of English (the project is fully in English). * Ability to analyze and resolve complex problems in distributed integration and front\-end environments. Requirements * Managing event cache issues: our integration layer performs daily dumps from the events app via its API. Experience in strategies to minimize daily cache purging will be valued. * Optimizing Salesforce Native Forms integration: currently implemented via iframes; we aim to scale this solution using our custom API, particularly in AEM EDS environments. * CDN configuration and migration: from Adobe Managed CDN to Fastly, including cache, TTL, SSO, and other advanced configurations. Benefits * Flexible working hours and hybrid work option. * Integration into an innovative project with cutting-edge technology. * Opportunity to collaborate in an international team working 100% in English. * Continuous professional development and learning of new tools and cloud platforms. Join Seidor Gesein as a Senior Back\-End Developer! Work with NodeJS and AWS at a dynamic HR consultancy specialized in IT. Discover more and grow with us!