Role
As a Staff Machine Learning Engineer, you will own the most technically complex and high-impact projects from conceptualization over architecture design to production deployment.
You will:
Set direction for a technical team, ensuring architectural excellence and long-term solution maintainability. Lead and mentor junior and senior engineers, raising the technical bar across projects. Stay hands-on with high quality code contributions to data processing, modeling and deployment pipelines while delegating effectively. Partner with clients to translate complex business challenges into clear technical roadmaps and deliver measurable business outcomes. Drive adoption of modern ML best practices and state-of-the-art methodology from system design and architecture over modelling to MLOps. You are not only passionate about machine learning, but also about shaping how data-driven insights create value for our clients. You thrive in dynamic environments, balancing hands-on technical work with strategic decision-making and team leadership.
This role goes beyond building models:



you will be responsible for technical strategy, quality standards and growing engineering talent, shaping the future of our ML delivery practice.
Requirements
To succeed in this role, you bring a combination of expertise, experience, and skills including:
6 - 8 years of experience in machine learning, data science, or related fields. Proficiency in Python programming. Expertise in ML/DL libraries and frameworks (, Scikit-learn, TensorFlow, Keras, PyTorch). Experience with data visualization tools (, Matplotlib, Seaborn, Power BI, Tableau, Deep learning experience (, RNNs, CNNs) and strong knowledge of clustering, regression, and classification methods. Experience in designing, developing, and deploying LLM-based applications, including RAG systems, with a strong understanding of prompt engineering, vector databases, and knowledge retrieval pipelines. Familiarity with Unix/Linux environments, REST A

📌 Staff AI Engineer (Barcelona)
🏢 Visium
📍 Barcelona