Experienced Fullstack Engineer - AI Applications - Customer & Marketing

About the companyLeading European company in the retail sector, with a strong international presence and a well-established omnichannel model that seamlessly integrates physical stores and large-scale e-commerce operations.In recent years, the organization has made a significant investment in technology, building an international tech hub in Barcelona from which strategic initiatives are being driven to support millions of users across multiple countries. This hub brings together multidisciplinary teams (engineering, product, UX, architecture) working in agile environments with a high degree of autonomy.The environment is particularly attractive for tech profiles as it combines:Real user scale and technical complexityProjects with direct business impactModern technologies and advanced architecturesAn international and collaborative settingThe company is currently undergoing a strong transformation, where technology is becoming a central pillar of the overall strategy. This gives technical profiles high visibility, real impact, and the opportunity to contribute to key decisions.From a cultural perspective, it offers a dynamic and flexible environment, where not everything is predefined and individuals are expected to actively contribute to shaping the way of working and the team culture.Your TasksYou take on a responsible role in the development of our Customer & Marketing web applications and the associated backend services.You play a key role in defining requirements and solution approaches in collaboration with Product Owners.Together with your team, you take responsibility for the services and applications of the team and ensure both maintenance and operation within our cloud infrastructure. Continuous improvement is important to you.You enjoy sharing your knowledge with your colleagues and thereby contribute to the development of the entire team.You work on the integration and connection of Large Language Models (LLMs) and use frameworks like LangChain to develop innovative (generative) AI solutions.Your ProfileYou have several years of professional experience as a Full-Stack Engineer and have already built and operated your own applications in the past, ideally in the e-commerce environment.SPAs are your first choice when it comes to implementing applications with React and the latest TypeScript standards .The quality of your application is important to you, which is why you swear by TypeScript and prefer to test every line of your code.You have experience in NoSQL databases (like MongoDB) as well as in relational databases (PostgreSQL)Since you are interested in the entire lifecycle of an application, Continuous Delivery and (cloud) infrastructure are not foreign words to you, and you prefer to combine this with microservices.Codebases you have worked with have led you to consider a monorepo approach.You are interested in chatbot and voice solutions, especially the intricacies of NLP, and ideally have already gained initial experience with services like Google Dialogflow.You have experience in connecting and using Large Language Models (LLMs) and are familiar with frameworks like LangChain.You are curious to implement the latest AI trends with us (RAG with vector search, Agentic AI and Multi modal AI )You are proficient in the Python programming language and have experience in developing and implementing AI models.You have a strong team spirit, are used to working in agile teams, and have no problem with freedom and responsibility.