// INFRASTRUCTURE · NETWORKS · DEVOPS
Systems that don’t fall over,
no matter how hard the world insists.
Senior System Administrator — available from October 2025
Nineteen years running mission-critical environments: high-availability clusters on vCenter, Hyper-V and Proxmox, migrations to Azure, GCP and Oracle, and perimeter security for clients such as CEPSA, OTIS, HITACHI and the Ministry of Defence.
$ whoami
francisco — sysadmin / infra / devops · madrid
$ uptime –lab
proxmox 3-nodes [OK] · pfsense+suricata [OK] · wazuh/graylog [OK] · gitlab-ci [OK]
Portrait · 2026

19+
Years of experience
3
Clouds (Azure · GCP · Oracle)
500+
Users supported
3
Professional languages
// 01 · ABOUT
Who I am
I am Francisco Angulo Amezcua, a senior system administrator whose career is built on one simple idea: infrastructure should be boring for the people who use it and interesting for the people who run it. I started in 2005 keeping NH Hotel Group’s multi-site network alive through their hotel acquisitions —mass migrations with real guests inside— and since then I have moved through electronic security in Italy, AV production and eleven years of system administration and DevOps at Greenpeace, Arrow Electronics and Imagar.
I thrive where systems, networks and automation meet: enterprise virtualisation, secure perimeters, backups that actually restore and CI/CD that removes manual toil. Outside work hours I run a personal lab in continuous production —Proxmox HA, pfSense with IDS/IPS, a Wazuh/Graylog SIEM, GitOps with GitLab and an AI agent platform— because the best way to stay sharp is to operate every day.
Working philosophy
- Observe before touching: metrics, logs and alerts first.
- Backups are proven by restoring, not by copying.
- Least privilege and minimal exposed surface.
- Document every incident; never let the same failure come free.
- Automate anything that hurts twice.
// 02 · EXPERTISE
What I do well
E1Systems
E2Infrastructure
E3Networking
E4Security
E5Virtualisation & Cloud
E6Automation · DevOps
E7Monitoring
// 03 · PROJECTS
Personal lab
Self-hosted projects running in continuous production. Not client work: this is my technical gym, described without sensitive data.
LAB-01
High-availability Proxmox VE cluster
Problem: consolidate critical services with real fault tolerance.
Work: 3 nodes, ~40 VMs/LXC, HA with quorum, 3-2-1 backups verified by periodic restores.
LAB-02
Edge network with IDS/IPS
Problem: segment a network with enterprise-grade security.
Work: pfSense + Suricata in IPS mode, UniFi VLANs, WireGuard, DNS filtering and active threat blocking.
LAB-03
SIEM with response
Problem: know what happens in the infrastructure before it hurts.
Work: Wazuh + Graylog + Zabbix correlating events from 15+ hosts, Telegram alerts and automatic runbooks.
LAB-04
GPU media pipeline
Problem: process terabytes of video without frying the CPU.
Work: automated ingest, renaming, NVENC/QSV transcoding distributed across Tdarr nodes and delivered via Plex.
LAB-05
AI agents operating infrastructure
Problem: turn an LLM into a useful, safe operations collaborator.
Work: OpenClaw platform with specialised agents (infra, security, media, home automation), MCP, Qdrant vector memory and incident-driven GitOps.
LAB-06
Home automation with custom interfaces
Problem: domotics usable by the whole household, not just the engineer.
Work: Home Assistant + Zigbee/ESPHome, bespoke Lovelace dashboards and an M5Stack robot as the voice interface.
// 04 · EXPERIENCE
Career
NOV 2021 — SEP 2025
Senior System Administrator · DevOps
Imagar — Madrid
- HA clusters on vCenter, Hyper-V and Proxmox; cloud migrations to Azure, GCP and Oracle.
- Enterprise backups with 99.99% availability for critical immutable data.
- CSAAS perimeter security for multinational infrastructure; Windows Server for 500+ users.
- Projects for CEPSA, OTIS, HITACHI and the Ministry of Defence.
DEC 2020 — NOV 2021
Senior System Administrator
Arrow Electronics — Spain
- PMO plus design/rollout of mission-critical IT projects with VMware (ESXi, vSphere, clustering).
- Incident supervision (HW/SW/comms) and continuous improvement of enterprise infrastructure.
- Security: FortiAnalyzer, FortiGate, iptables. Networking: Cisco, UniFi, Squid, HAProxy.
APR 2017 — NOV 2020
Senior System Administrator
Greenpeace — Spain
- Mission-critical support to 100+ client companies on VMware and Google Cloud APIs.
- Continuous improvement of client-specific IT processes.
- Security and networking: Cisco firewalls, pfSense, iptables, Squid, routing.
APR 2016 — APR 2017
System Administrator
Imagar — Spain
- System administration and infrastructure support for client environments.
JUN 2015 — SEP 2016
Technical AV Operator
Fescinal — film festivals (Madrid, FISAHARA, Altea)
- Digital projection booth operation and technical management of high-profile events.
SEP 2011 — JAN 2013
Security Systems Technician
Vasto Vigili — Italy
- Enterprise CCTV and access-control installation; 24×7 maintenance of critical infrastructure.
SEP 2008 — JAN 2011
IT Entrepreneur · Solar Business Owner
Ladder S.L. — self-employed
- Photovoltaic franchise: acquisition and management of solar farms; IT sales and P&L ownership.
MAR 2005 — SEP 2010
Network Systems Administrator
NH Hotel Group — international chain
- Multi-site networking and 24×7 critical maintenance; mass migrations after hotel acquisitions.
// 05 · EDUCATION & CERTIFICATIONS
Education
FORMAL EDUCATION
Vocational Degree, Systems
I.E.S. Virgen de la Paloma — Madrid
DEVOPS
DevOps CI/CD Course
Universidad Tech
GitLab · CI/CD
MICROSOFT
MCSA
Microsoft Certified Systems Administrator
retired by Microsoft in 2021
2012
ITIL v3
Sermicro
expired — reference training
// 06 · CONTACT
Let’s talk
Need someone who makes infrastructure simply work?
EMAIL[email protected]
LINKEDIN/in/francisco-angulo-amezcua
LOCATIONMadrid, Spain · open to remote
LANGUAGESEN fluent · ES native · IT fluent
CVOn request: drop me a line