Aitor Llanos

I’m a Data & Cloud Consultant with 5+ years of experience designing and optimizing data-driven solutions for enterprise clients. My background spans full-stack development, cloud engineering, and big data analytics, enabling me to deliver end-to-end value—from backend microservices to scalable cloud data platforms. I blend deep technical skills with leadership, communication, and business impact focus.

At CaixaBank, I developed robust microservice contracts and contributed to agile practices as a Full-Stack Developer. Later, as a Big Data Engineer, I led the Guardrails team in the cloud migration of a EuroStoxx 50 bank. I built cost-efficient pipelines using Apache Spark (Scala) on Azure (Databricks, Synapse, Power BI), and implemented automation and monitoring on AWS (Lambda, SageMaker, Athena, CloudWatch, QuickSight) using Python/Boto3 scripts for cost control and governance. I worked closely with stakeholders to ensure alignment and agile delivery.

Currently, I’m a Senior Cloud Data Engineer at Izertis, leading projects for clients like Viajes El Corte Inglés. I design data architectures, manage ELT pipelines with BigQuery & Dataform, automate workflows with Cloud Functions, and build secure, lifecycle-aware Data Lakes. I also lead technical teams, oversee documentation, and manage client engagement and project scoping. I integrate FinOps to optimize cloud costs and ensure compliance.

Since 2024, I also consult independently in Data Governance and Data Quality. I support Heineken by defining data quality rules with PySpark, aligning them with governance policies, and maintaining daily contact with business and technical teams to drive results.

My passion is bridging data engineering and business needs—delivering secure, scalable, and cost-effective solutions. Open to freelance or contract roles in cloud data platforms, governance, or digital transformation. Let’s connect!