About Our Client Our client is on a mission to simplify how developers interact with government services. Their goal is to make the exchange of electronic documents - such as e-invoices- fast, secure, and developer-friendly through powerful API solutions.Location:Remote from Italy Contract Type:Full-time Language Requirements:Spanish (native or fluent), English (B2 level or higher)Your Role As a Senior Software Engineer, you will lead the development and deployment of core products for theSpanish market, ensuring they are scalable, compliant, and easy to integrate.You will: Architect, build, and document backend components and APIs. Ensure high performance, reliability, and maintainability of the systems. Collaborate directly with customers to support smooth and successful integrations. Recruit, mentor, and manage a junior/mid-level developer.What Our Client Is Looking For Strong experience in developingweb applicationsand backend services. Hands-on experience withscalable API projects. Solid understanding ofSpanishandEnglish (B2+). Experience working directly with clients or stakeholders. Familiarity withfiscal compliance ,e-invoicing standards, orgovernment APIsis a strong plus.Preferred Tech Stack While diverse technical backgrounds are welcome, the following experience is especially valued: PHP(preferably withSymfony ) Python AWSor similar cloud platformsWhy This Role? Remote-first culture with flexible working hours A key position in a fast-growing company with the opportunity to shape success in the German market A collaborative, international team focused on solving real-world problems