Data Tech Lead Join Medi-Market Group and help shape the future of health and well-being About Medi-Market: Since 2014, Medi-Market has established itself as a key player in health and well-being in Belgium, Luxembourg, the Netherlands, Italy, and Spain. Our mission is clear: to make high-quality expertise accessible to everyone at the fairest price. Our strengths A unique omnichannel ecosystem, made up of more than 180 points of sale (parapharmacies, pharmacies, institutes) and two high-performing webshops, enabling us to offer our customers a seamless, modern, and consistent experience. A community of more than 2,000 passionate and committed employees, driven by the desire to innovate, learn, and improve the daily lives of millions of people. A fast-growing company that continuously rethinks the standards of health retail and aims to become a European leader in the sector. Why join us? Because Medi-Market is much more than a company: it is a young, ambitious, and constantly evolving group where every talent can have a real impact. We are strengthening our digital capabilities, deepening our expertise, and launching innovative projects to shape the future of the health and well-being market. Joining Medi-Market means taking part in an exciting human and entrepreneurial adventure, serving a mission that truly makes sense. Role & Responsibilities Our retail operations generate millions of data points daily. Your mission is to evolve our "functional medallion-oriented" platform into a state-of-the-art Data & AI ecosystem with en enhanced Data Security Framework (RBAC RLS OLS). You will be the bridge between our business goals and technical execution, ensuring our pipelines are robust, our costs are optimized, and our AI capabilities are production-ready. You will lead the technical transformation of our data platform from a monolithic "all-in-one" structure to a modern, domain-driven Lakehouse. Main duties You will own A Modern Data Architecture: Design and oversee the transition to a highly resilient Architecture using Databricks Lakeflow Spark Declarative Pipelines (SDP, ex-DLT) and Unity Catalog. Transition our 5-hour data load into a split, orchestrated, and parallelized process to ensure data is available much earlier than today. The Establishment of a Centralized DAX Repository to synchronize calculations across multiple semantic models, ending the "measure overload" of 1,200 unmanaged measures. The Implementation of an Application Lifecycle Management (ALM) with distinct DEV, UAT, and PROD environments to stop the practice of "hotfixing" directly in production. FinOps & Cloud Cost Management: Implement rigorous cost-management frameworks within Azure and Databricks to ensure our scaling is sustainable and ROI-focused. AI & ML Ops: Lead the deployment of LLMs and predictive models using Mosaic AI, ensuring we move from "cool prototypes" to "scalable business value." Engineering Excellence: Set the bar for CI/CD, automated monitoring (Data Quality/Observability), and infrastructure-as-code (Terraform) across the team. Data Governance: Champion the rollout of a Data Governance framework utilizing Databricks Unity Catalog. You will enforce strict RBAC, Row-Level Security (RLS), and Object-Level Security (OLS), while automating PII protection and data masking across domain-driven data products. Mentorship: Lead a team of Data Engineers, fostering a culture of high-quality code and proactive problem-solving. Main Competencies Expert-level proficiency in Databricks (PySpark, SQL, Mosaic, SDP, Unity Catalog). Deep experience in Azure Cloud (Data Factory, ADLS Gen2, Azure DevOps). Hands-on experience with MLflow, Model Serving, and integrating GenAI/LLMs into retail use cases. Experience with Data Observability tools (e.g., Monte Carlo, Soda) and FinOps dashboards. A solid understanding of how to structure data for high-performance Power BI reporting. DevOps/ALM: Proficiency in Git-based workflows, Databricks Asset Bundles (DAB), and deployment pipelines. Security Mindset: Proven track record of implementing PII protection, Data Masking, and Privileged Identity Management (PIM). Collaboration Optimism Transparency Profile : A minimum of 8 years of proven experience in a similair field Bachelor's or Master's degree in Civil Engineering or Information Technology Fluency in French and English Scope of the Role : Group-level What we offer A permanent contract with a competitive salary package, including 5 additional leave days, group insurance, hospitalization insurance, meal vouchers, and access to a wellness app. A modern, pleasant, dynamic, and supportive working environment where your development is a priority. Comprehensive and practical training on our tools, methods, and processes to help you quickly build your skills. Real challenges within a fast-growing Belgian company with international reach, offering numerous opportunities for career development and progression. Flexible hybrid working arrangements, ensuring a healthy balance between on-site presence and remote work. Ready to take on the challenge? Join the Medi-Market adventure and help make health and well-being accessible to everyone!