Cala AI is looking for a Cloud Infrastructure Engineer (4+ years of experience)
💰
Salary:
Competitive + stock options
📍
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 a 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.
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 they’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
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.
About JobFluent
ES - ¿QUÉ SOMOS?
JobFluent es un híbrido entre una plataforma de empleo tecnológico de calidad y un equipo de asesores que te ayudan a crecer en tu carrera. Nuestro objetivo es que la vida de nuestros usuarios cambie a mejor y que el proceso de cambio (normalmente estresante) sea lo más FLUIDO y agradable posible .
Somos conocidos por:️
Trato humano: nuestro equipo siempre está preparado para ayudarte de forma honesta y personalizada.
Sin spam: primero te escuchamos y sólo después te sugerimos oportunidades relevantes y validadas que encajen con tus intereses e inquietudes.
Acompañamiento: te damos consejos y te apoyamos durante todo el proceso de selección para aumentar tus probabilidades de éxito.
Experiencia del candidato: esto es lo que nos mueve! Nos rebelamos contra la falta de feedback y otras malas prácticas demasiado habituales en nuestro mundo.
EN - WHO WE ARE
JobFluent is a hybrid between a quality tech job platform and a team of advisors who help you grow your career. Our goal is to make our users' lives change for the better and to make the (usually stressful) job search process as FLUENT and enjoyable as possible .
We are known for:️
Human treatment: our team is always ready to help you in an honest and personalized way.
No spam: first we listen to you and only then do we suggest relevant and validated opportunities that match your interests and concerns.
Coaching: we give you advice and support you throughout the selection process to increase your chances of success.
Candidate experience: this is what drives us! We rebel against the lack of feedback and other bad practices that are all too common in our world.