Cala AI – Cloud Infrastructure Engineer (4+ years of experience) Location:

Hybrid in Barcelona (office located near Passeig de Gràcia, in the Cloudworks coworking space)

Perks

Gym and restaurant discounts via Cloudworks, flexible working hours, inclusive culture, direct impact, and founder with a proven AI track record.

Summary

At JobFluent we are supporting innovative companies like

Cala AI in their search for top tech talent.

Cala AI is an

AI startup founded by the creator of

Vilynx

— a Barcelona-based company acquired by Apple — and is on a mission to redefine how information is verified and represented at scale. Recently recognized by

Creandum’s #EuroSeed50

list as one of Europe’s most promising early-stage startups,

Cala AI is building trustworthy and high-impact AI systems that challenge industry norms. Based in the heart of Barcelona’s tech ecosystem, they combine a culture of authenticity, grit, and collaboration to build technology that matters.

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.

Responsibilities

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

Qualifications

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)

Adaptable, problem‑solving mindset ready to thrive in a startup environment

Availability to work in hybrid mode

Benefits

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

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

Cultural fit interview with CEO

Offer

They welcome applicants from diverse backgrounds who bring passion, curiosity, and resilience. If this sounds like you, get in touch — they’re excited to see what you can build together.

📌 DevOps Engineer (Madrid)
🏢 JobFluent
📍 Madrid