Expert Data Architect – Lakehouse & Open Source Data Platforms

Our client, a leading organization in the public health sector, is looking for an expert to support the design and implementation of a multi-user data and analysis platform. This role focuses on bridging organizational architecture with technical execution to build a scalable, secure storage layer based on modern lakehouse principles.

• Propose and evaluate technologies for the storage layer, including BLOB storage, relational databases, and NoSQL systems.
• Implement medallion architecture patterns while managing data archiving, backup, and integration workflows.
• Ensure technical interoperability between the data lakehouse and components like ingestion layers and data science workbenches.
• Align platform architecture and data flows with compliance standards such as GDPR, NIS2, and the European Health Data Space.
• Provide technical leadership to development teams through code reviews, design evaluations, and best practice advocacy.
• Maintain high-quality technical documentation and collaborate with cross-functional partners to deliver integrated solutions.

• You bring 8+ years of expertise in Data Platform Architecture, including data lakes, lakehouse environments, and ETL/ELT pipelines.
• You possess deep knowledge of storage technologies such as MinIO, PostgreSQL, NoSQL, and S3-compatible object storage.
• You have experience with data processing frameworks including Apache Spark, Apache Iceberg, and dbt.
• You have extensive experience with containerization and orchestration using Docker, Kubernetes, and Helm.
• You bring proficiency in infrastructure as code and cloud platforms using Terraform and OpenStack.
• You possess knowledge of security and identity management tools such as Keycloak and HashiCorp Vault.
• You have a strong understanding of data governance and protection frameworks including GDPR and NIS2.
• You're a proactive problem-solver with the ability to communicate complex technical concepts to non-technical stakeholders.
• You are fluent in Dutch or French with an excellent knowledge of English.

Nice to Haves

• Experience with sovereign cloud stacks such as OVHcloud, Hetzner, or Scaleway.
• Familiarity with data science workbenches like Onyxia.

• Start date: 01/09/2026
• Duration: 4 months
• Work regime: Full-time
• Location: Brussels
• Working model: Hybrid
• Contract: open to both permanent employees and freelancers