Architecture & migration
Independent senior review and hands-on delivery across AWS, GCP, and Azure.
Cloud / DevOps / SRE
Senior cloud infrastructure contractor.
19 years in IT. I design, automate, and operate cloud platforms — architecture and migration, Infrastructure as Code, cost optimization, and delivery pipelines — as bounded, remote B2B engagements for European engineering teams, delivered from Spain (CET) and handed over when done.
What I do
Infrastructure that works, plainly.
Automation & IaC
Terraform-based infrastructure and pipelines that remove manual steps and stay maintainable.
Cost & delivery security
FinOps cost reviews and DevSecOps pipelines with controls auditors accept and engineers keep.
Experience
Where I've worked.
mrexojo.com · B2B Contractor
Freelance Cloud & DevSecOps Engineer
Remote engagements for Orange Bank, SantaLucía, and Jefferson Frank IT Consulting: DevSecOps pipelines, FinOps cost control, and AI infrastructure operations.
Copado (US)
Cloud Infrastructure Engineer
Custom Terraform modules for a Salesforce DevOps platform on GKE; observability (Sumo Logic, Prometheus) sustaining 98% uptime across a team spanning US, India, and Europe.
Sngular (Spain)
Cloud & DevOps Engineer
Client engagements at Decathlon Spain (AWS EKS to GCP GKE migration) and Telefónica Foundation (IaC for a global high-availability platform).
Nokia Spain
Site Reliability Engineer
OpenStack and bare-metal operations for telecom OTT streaming infrastructure; automated provisioning with MAAS.
IIC / ZeppelinTV
Linux Systems Administrator
Foundational systems administration: Linux, virtualization, databases, backups, and network infrastructure.
Certifications
Always learning.
- NVIDIA NCA-AIIO — AI Infrastructure and Operations
- Google Cloud Certified Engineer (Renewed)
- AWS Solutions Architect Associate
- FinOps Certified Practitioner (FOCP)
- AWS Security Specialty
- HashiCorp Terraform Certified Associate
- Linux LPIC-3 (Virtualization & HA)
- OpenStack Certified Administrator (COA)
DevSecOps and Delivery Pipelines
CI/CD pipelines with security controls built in: fewer manual steps, auditable releases, and scanning that engineers actually keep.
Cloud Cost Optimization and FinOps
Structured cost reviews and FinOps practices that reduce cloud spend without degrading reliability or slowing delivery.
Infrastructure as Code and Automation
Terraform-based infrastructure and deployment automation that removes manual steps and stays maintainable after handover.
When to Move to Managed Cloud Services — and When to Wait
Decision criteria for CTOs weighing managed databases, Kubernetes, and serverless against self-operated infrastructure: the real cost comparison, the migration signals, and the lock-in question answered honestly.
Claude Apps Gateway: A Governance Chokepoint for Multi-Cloud Agentic AI
Anthropic's gateway component for Bedrock and Google Cloud centralizes network policy, RBAC, and cost control for agent traffic — a corporate firewall for AI. Why the category needed to exist, what centralizing buys and risks, and an opinion on adoption timing.
Docker Under the Hood: The Runtime Anatomy Every Infrastructure Engineer Should Know
CLI, dockerd, containerd, runc, and the kernel primitives underneath — namespaces and cgroups. Why the layered anatomy matters operationally, what each layer owns, and where incidents actually live. A back-to-fundamentals piece.
Organized by the decision it helps you make, not by upload date — pick the topic that matches what you're deciding, not the week I recorded it.
Cloud Architecture & Migration
Decision-making behind cloud moves — what to check before committing budget.
Videos coming soon.
Automation & Infrastructure as Code
Terraform and pipeline patterns, and the over-engineering failure modes to avoid.
Videos coming soon.
FinOps & Cost Optimization
Where cloud spend actually goes, and what is worth fixing first.
Videos coming soon.
DevSecOps & Delivery
Security controls that survive daily engineering, not just an audit.
Videos coming soon.
Contact
Get in touch.
For scoping a cloud architecture review, a Terraform build, a cost audit, or a DevSecOps pipeline — book a call or write directly.