We are an independent global marketing communications group with a human‑first approach. We connect strategy, creativity, technology and operations to help brands and organisations grow with purpose. Our integral network supports more than 1,200 clients across 34 countries, backed by over 35 years of experience. Under the mci group umbrella, our agencies bring together world‑class talent in strategy, creative development, account leadership, technology, production and research to shape meaningful, lasting impact.Mci group’s AI Team builds AI products for back-office and front-office use, with one ambition: transforming mci group into an AI-powered organisation. We’re looking for a Senior Developer to join us as a hands‑on peer, bridging product and engineering.What you’ll doBuild and ship features and AI agents, taking on the most complex partsTurn product needs into clear, well-sized tasks with the Product ManagerHelp fellow developers move faster through pairing,



code reviews and shared toolingKeep quality high across products, including measurable AI quality (evaluations, guardrails, cost tracking)Work in tandem with our Dev Ops Engineer on CI/CD, infrastructure as code and monitoringWhat you bring5+ years building and shipping production softwareStrong full-stack skills: Type Script/React (Next.Js) and Python or C#Hands‑on experience with production LLM applications (RAG, agents, evaluation)Cloud experience on Azure and solid Postgre SQL data modellingA collaborative, low-ego approach and a track record of making teams more effectiveFluent English; Spanish or French are strong assetsAble and willing to travel occasionallyNice to haveAzure AI Foundry agents, Copilot Studio, vector search, AI-assisted development.Mci group is where you can bring your true self to work and be proud of what you do. Join us and make a difference!#J-18808-Ljbffr

📌 Group Ai Senior Developer (Barcelona)
🏢 Mci Group
📍 Barcelona