About
IT consultant: from infrastructure to product.
I'm Samuel Aguilar, systems administration technician and IT consultant. My field is infrastructure — systems, networks and security — and from there I build the software the business needs.
I trained as a Higher Technician in Network Systems Administration (ASIR) and I learn the way that works best: building real things end to end. Everything you see in the portfolio is code that exists.
What drives me: cybersecurity, network infrastructure and applying AI to concrete problems. And because I previously ran my own business, I understand a small company from the inside: I talk results, not just technology.
- Role
- IT Consultant
- Disciplines
- Systems · Networks · Cybersecurity · Development
- Location
- Spain — remote
- Contact
- hola@samuelaguilar.dev
Samuel Aguilar
samuelaguilar.dev
Experience
Where I've put it to work.
Technical Coordinator — Internship (FCT)
Sección9 Consultoría S.L.
I coordinated five departments (AI, support, cybersecurity, web and management) and worked on real production infrastructure: Active Directory with jump servers, networks, SQL Server, virtualization and monitoring (vSphere, Zabbix, Datadog), security and incident response, and AI automation. 674 hours, final assessment: passed.
How I work
My principles.
From the network to the product
I don't separate "the one who sets up the server" from "the one who codes the app". I handle the whole technical path, which avoids the seams where projects usually fail.
Build, don't just opine
I learn by building real, complete things, not demos. Every project in the portfolio is code that exists and works.
Security from the start
Security isn't a layer added at the end: it's how you design from day one. Hardening, least privilege and traceability.
Clarity above all
I explain the technical side in terms the business understands. No smoke, with realistic timelines and visible progress.
Skills
What I master.
Systems & servers
- Linux (Debian/Ubuntu)
- Windows Server
- Active Directory
- Virtualization (Proxmox/VMware)
- Docker
- Backups & recovery
Networks
- TCP/IP
- Switching & routing
- VLAN & segmentation
- VPN
- Firewalls (pfSense)
- Monitoring
Cybersecurity
- System hardening
- OSINT
- Surface analysis
- Nmap
- Best practices
- GDPR / NIS2
AI & automation
- LLM integration
- Claude API
- Assistants & bots
- Automation scripting
- PowerShell
- Bash
Development
- TypeScript
- Next.js / React
- .NET / Blazor
- Python
- PostgreSQL / Prisma
- Git
Education
Where I come from.
Higher Technician in Network Systems Administration (ASIR)
Higher Vocational Training — Systems administration, networks, security and services.
Internship (FCT) — IT consulting and systems administration
Real professional environment — Applying what I learned in projects and client environments.
Certifications and courses
- Cisco Packet Tracer — Cisco Networking Academy
- Microsoft Learn — Cybersecurity fundamentals (threats, identity, cryptography and network security)
- Microsoft Learn — Azure (cloud fundamentals, administration, monitoring and Machine Learning)
- Internet of Things (IoT) — MIT Professional Education
- Business Promoter Diploma (300 h) — INCYDE Foundation / Chamber of Commerce
My goal is to establish myself as an architect of network infrastructure and cybersecurity, adding industry certifications on top of an already-built practical foundation.
Got a technical project on your hands?
Systems, networks, security or custom development. Tell me what you need.