About

Senior consulting. Not generic cloud filler.

CerberusByte is a solo consulting practice led by César Marín Valios — a DevOps and DevSecOps engineer with 20+ years of hands-on experience across enterprise infrastructure, regulated industries and hybrid cloud environments.

Experience that covers the full stack

Two decades across financial services, healthcare, telecom, government and high-growth technology companies. The work has included everything from greenfield Kubernetes platform builds to zero-downtime legacy modernizations where the legacy system could not be touched during business hours.

That range matters because most infrastructure problems are not new — they have appeared in different contexts before, and the solution usually depends on understanding the constraints more than on knowing the latest tool.

How I work

Every engagement starts with structured discovery — a systematic audit of your current infrastructure, delivery workflow, security posture and team operating model. The output is a written assessment with findings in priority order, not a slide deck with generic recommendations.

Implementation work comes with documentation and knowledge transfer so your team understands what was built and why, not just that it works. The goal is that when the engagement ends, your team is more capable than when it started.

Why clients bring me in

Usually one of four situations: a migration or modernization that is behind schedule because the complexity was underestimated; a compliance deadline that exposed gaps in the infrastructure security posture; a reliability problem that internal teams have been unable to diagnose; or a platform that works but costs too much and the team is not sure why.

In each case the first job is the same: understand the actual situation before proposing anything. That sounds obvious, but it is not how most consultants operate.

Areas of expertise
  • Kubernetes
  • Terraform
  • AWS
  • Azure
  • GCP
  • ArgoCD
  • Helm
  • GitHub Actions
  • GitLab CI
  • Prometheus
  • Grafana
  • OpenTelemetry
  • HashiCorp Vault
  • OPA / Kyverno
  • Istio
  • Linkerd
  • Pulumi
  • Ansible
  • Docker
  • Linux
  • Python
  • Go
  • Bash
  • SOC 2
  • ISO 27001
  • NIST
  • PCI-DSS
  • HIPAA
Languages
EnglishProfessional
SpanishNative
PortugueseWorking knowledge
Get in touch