DevOps Engineer in Barcelona

About the company

From the founders of Vilynx — a Barcelona AI startup acquired by Apple — comes Cala AI: a bold new venture redefining how information is verified and represented at massive scale. Based in Barcelona’s vibrant tech hub near Passeig de Gràcia, Cala AI is building innovative AI systems focused on trust, accuracy, and impactful technology that challenges industry norms.

Recently, Cala AI was named by Creandum to their #EuroSeed50 list — highlighting the most promising early-stage startups in Europe — an honor that reflects the strong belief in our mission and team. We are a small, ambitious group dedicated to building real solutions with grit, heart, and a culture of authenticity.

About the role

You’ll lead the design and management of scalable, resilient cloud infrastructure using AWS, Kubernetes, Terraform, and observability tools like Prometheus and Grafana. You’ll work cross-functionally to ensure our platform is secure, performant, and ready to support heavy AI workloads. 

What you’ll do

• Build and maintain cloud infrastructure optimized for AI workloads

• Manage Kubernetes clusters, deployments, and CI/CD pipelines

• Implement monitoring and observability systems for reliability

• Enforce security and best practices across multi-account AWS environments

• Collaborate closely with data and ML teams to align infrastructure needs

• Drive automation and infrastructure-as-code using Terraform and GitOps tools

What we’re looking for

• 4+ years of cloud infrastructure or DevOps experience, AWS preferred

• Strong Kubernetes and Terraform skills

• Experience with monitoring stacks (Prometheus, Grafana, Kibana, Splunk)

• Familiarity with CI/CD and GitOps (ArgoCD, Flux)

• Comfortable with SQL and NoSQL database maintenance

• Bonus: experience with MLOps, DevSecOps, or FinOps

• Language: B2+ level in either English or Spanish (fluency in either is acceptable)

• Flexible, problem-solving mindset ready to thrive in a startup environment

• Availability to work in hybrid mode

Why Cala AI?

• Work alongside a founder with a proven track record in AI startups

• Join a company dedicated to building AI for good — focused on trust and impact

• Competitive compensation package plus stock options

• Based in Cloudworks, a dynamic co-working space near Passeig de Gràcia in Barcelona; enjoy the perks that come from being part of Cloudworks, like gym subscription and restaurant discounts

• A supportive, inclusive, and horizontal culture that values authenticity and growth

Hiring process - Conversation-based (no coding tests)

• Initial chat with CTO focused on your experience and projects

• System design interview (onsite preferred)

• Cultural fit interview with CEO

• Offer