Hands-on Data Scientist Manager (AI start-up) Salary: €87k + 10% bonus Industry: AI software, start-up - heavily backed by a global investor Workplace: Hybrid - 2 days per week Offices: Barcelona or Madrid Our client, the AI tech firm, are helping businesses across the globe prioritize and deliver impact at speed. 2026 is going to be a very busy year and we need a Lead Data Scientist who's are ready for their next move in either Madrid or Barcelona. You don't need to have managed / led teams, but you will need to have experience mentoring & coaching. Question tiiiiiime..... Do you know how the data you're working with effects the business? This question is KEY. Do you have a passion/interest in AI?Are you a people-person and someone who can work in an start-up, nimble environment?Tech stack / experience needed: ~ Python, R, SQL ~ Lead an AI lab and develop AI products ~ OO programming - APUI's, AWS Lambda, crontab ~4+ years Machine Learning methodologies ~ Business acumen, experience with stakeholders ~ Experience with embeddings, genAI and some LLM fine tuning ~ Calibration of unbalanced problems, RF vs XGB, data leakage with oversampling ~ PhD or Masters in Data Science / Engineering / Mathematics ~ AWS experience is a bonus The AI platform is literally flying off the shelf and leading enterprises are knocking on their door, as no other Decision Intelligence platform is this powerful. Come and join this rocket-ship, be part of something that is genuinely improving the world around us, using Artificial Intelligence. Message me on here and we can discuss the company and position in more detail - I look forward to hearing from you. #artificialintelligence #datascience #madrid #barcelona #gamechanging