> Markdown version of [/jobs/ext/3987357-senior-back-end-developer-ai-node-js-ts](https://www.wearedevelopers.com/jobs/ext/3987357-senior-back-end-developer-ai-node-js-ts). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Senior Back-End Developer: Ai, Node.Js & Ts - **Company:** Amaris - **Location:** Barcelona, Spain (Remote available) - **Contract:** Permanent contract - **Skills:** Artificial Intelligence, Node.Js, TypeScript, Backend, Build Management - **Published:** October 28, 2026 - **Apply:** https://www.buscojobs.com.es/senior-back-end-developer-ai-node-js-ts-en-barcelona-ID-378088671 ## About the Role A multinational technology firm based in Barcelona is seeking a Senior Back-End Developer to design and build robust backend systems. You will utilize Node.js and TypeScript while integrating AI-driven solutions in production environments. The ideal candidate has 5-7 years of experience, excellent communication and teamwork abilities, and must be fluent in Spanish. This fully remote position offers continuous growth opportunities and a supportive work culture that values innovation and diversity. ## Description A multinational technology firm based in Barcelona is seeking a Senior Back-End Developer to design and build robust backend systems.You will utilize Node.js and TypeScript while integrating AI-driven solutions in production environments.The ideal candidate has 5-7 years of experience, excellent communication and teamwork abilities, and must be fluent in Spanish.This fully remote position offers continuous growth opportunities and a supportive work culture that values innovation and diversity.#J-*****-Ljbffr