act digital

Data engineer in high-scale systems

In short

Senior Data Engineer role building scalable batch and real-time ETL/ELT pipelines, data lakehouse architectures, and data quality frameworks for a strategic project serving European clients. Requires 4+ years of data engineering experience, strong Python (or Scala/Java), cloud platforms (Azure/AWS/GCP/Snowflake/Databricks/BigQuery), Spark/Hadoop, orchestration tools, and fluent French plus professional English. Hybrid role based in Lisbon, 2-3 days on-site per week, with the hiring company act digital.

About the role:
Are you a passionate Data Engineer looking to build resilient data architectures, optimize pipelines, and drive data-driven decision-making within a high-scale international ecosystem? At act digital, we are looking for a Data Engineer (French Speaker) with at least 4+ years of experience to join a strategic project in a hybrid setup based in Lisbon (Parque das Nações) (2 to 3 days on-site per week)!
Responsibilities:
•Design, implement, and maintain scalable, robust batch and real-time data pipelines (ETL/ELT)
•Collaborate on data modeling, data warehousing, and modern data lakehouse architectures to support advanced analytics and reporting
•Implement data validation frameworks, monitoring, and automated data quality checks across the pipeline lifecycle
•Tune SQL queries, monitor cluster workloads, and optimize data storage and processing performance
•Work closely with cross-functional European teams (Data Analysts, Data Scientists, and Business Stakeholders) in an Agile delivery framework
Requirements:
•Minimum of 4+ years of hands-on experience in Data Engineering or ETL/ELT development
•Strong proficiency in Python (or Scala / Java)
•Solid experience with cloud data platforms (e.g., Azure, AWS, GCP, Snowflake, Databricks, or BigQuery) and distributed systems (e.g., Spark or Hadoop)
•Hands-on experience with orchestration tools (e.g., Airflow, Prefect, ADF) and Git-based CI/CD workflows
•French: Fluent / Professional working proficiency (B2/C1 minimum) to collaborate daily with francophone teams
•English: Professional working proficiency
Nice to have:
•Experience within financial services, banking, or highly regulated enterprise environments
•Knowledge of containerization (Docker, Kubernetes) and Infrastructure as Code (Terraform)
•Exposure to streaming architectures (Kafka, Event Hubs, Flink)
Conditions:
•Hybrid model (2 to 3 days per week on-site in Parque das Nações, Lisbon)
•Impactful projects within top-tier European organizations
•Long-term stability within a certified Great Place to Work company
•High-trust environment, continuous learning, and exposure to cutting-edge data stacks

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