In Barcelona, the most in-demand skills are Kubernetes (K8s), Terraform, and AWS. As companies scale their global user bases, expertise in Service Mesh (Istio), Observability (Datadog, Prometheus), and Auto-scaling is highly valued. Trending skills like Infrastructure as Code (IaC) and DevSecOps are critical for the city’s many e-commerce and fintech platforms. Additionally, as companies look to optimize their cloud spend, FinOps skills are becoming a “high-ticket” asset. Engineers who can code in Python or Go to automate repetitive operational tasks (reducing “toil”) are frequently placed in higher-paying senior roles, making these the best technical competencies for salary growth in the Catalan tech scene.