IT Infrastructure Specialist

Production-Grade Infrastructure. Zero Downtime.

IT Infrastructure Specialist with 5+ years managing production systems across Linux, networking, cloud (AWS), and security — independently, with zero critical downtime. Based in Montevideo, Uruguay. Actively seeking on-site or hybrid roles in Albania, Kosovo, or the broader Balkans region.

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5+
Years
7
Clients
0
Breaches
99.9%
Uptime
01 — Core Expertise

What I Do Best

Production-focused infrastructure, security hardening, and operational support for systems that must stay online.

Linux Server Administration

Linux server deployment from bare metal — ARM and x86 systems. OS provisioning (Debian, Ubuntu, Armbian), service deployment, SSH management, system hardening, and long-term remote administration in live production environments.

Linux Armbian SSH Bare Metal

Infrastructure Hardening

Secure baselines for OS and networks: firewall policy, remote access controls, service exposure review, and hardening to reduce operational risk in real-time production environments.

Linux Firewall Network Security

Audit & Protection

Permission audits, integration reviews, and exposure assessments. Identity protection advisory and structured technical support for client systems under operational constraints.

Discord OPSEC Risk Management

Hardware & Diagnostics

Hardware troubleshooting, component replacement, and performance optimization. Workstations and ARM single-board systems: thermal management, storage/RAM upgrades, PSU testing, and OS recovery.

PC Build Diagnostics SBC

Scripting & Automation

Python, JavaScript, and Bash for task automation, custom tooling, and workflow improvements. Pragmatic approach: build what reduces toil and improves reliability.

Python JavaScript Bash

Cloud Infrastructure (AWS)

AWS EC2 instance deployment, security group configuration, and lifecycle management. Cloud-based infrastructure support integrated with on-premises environments, ensuring consistent uptime and access control across hybrid setups.

AWS EC2 Security Groups Cloud
02 — Background

Professional Experience

2022 — Present

IT Systems Specialist & Technical Support

7 Independent Clients — Remote

Full-cycle technical ownership for a portfolio of 7 clients running live production systems. Built and configured Orange Pi 5+ (ARM) servers from bare metal — OS provisioning (Armbian), networking, SSH access, service deployment, firewall policy, and hardening. Ongoing sysadmin support for Windows workstations with strict uptime requirements and real-time incident response.

100% client retention over 5 years. 0 breaches. 99.9% uptime across managed systems.
Orange Pi 5+ Linux Windows Networking
2020 — Present

Network Engineering & Security Operations

7 Independent Clients — Remote

Designed and implemented network security policies across all managed client environments. Configured firewall rules, VPN tunnels, port forwarding, and LAN/WAN routing. Administered AWS EC2 instances with security group policies, integrated VoIP systems, and enforced security hardening including access control, 2FA, and endpoint protection. Conducted real-time incident response and system audits to maintain zero-breach posture.

Zero security breaches across all managed environments. VPN and firewall policies deployed on every client network.
VPN Firewall AWS EC2 Network Security
2022 — Present

Independent IT & Security Studies

Self-taught — Uruguay

Five years of continuous self-directed learning initiated during 2020 — covering systems administration, networking fundamentals, cybersecurity concepts, scripting (Python, JavaScript, C#), and hardware maintenance. Every concept learned was applied to real client problems.

Python Security Active Directory
03 — Portfolio

Key Projects

Project 001

Orange Pi 5+ Server Deployments

Full bare-metal setup of Orange Pi 5+ (ARM) systems for 7 clients. OS provisioning (Armbian), network configuration, remote access via SSH, service deployment, firewall rules, and system hardening. Each unit delivered operational, documented, and configured for long-term remote management.

7 production-ready Linux servers delivered from zero. Stable long-term operation with remote management and no unplanned outages.
Linux Armbian SSH
Project 002

Network Security & VPN Infrastructure

Designed and deployed network security policies across 7 client environments — firewall rule sets, VPN configuration, port forwarding, LAN/WAN routing, and VoIP integration. Implemented access control layers and security hardening on every network to prevent unauthorized access and reduce attack surface.

Zero network-level security incidents across all clients. All environments protected with multi-layer access controls and monitored continuously.
VPN Firewall LAN/WAN VoIP
Project 003

Workstation Repair & Optimization

Ongoing hardware diagnostics and repair for client workstations — thermal paste replacement, storage and RAM upgrades, PSU testing, OS reinstallation. Preventive maintenance routines and remote monitoring practices that reduced reactive emergency support.

Fast turnaround maintained under production pressure. Reduced repeat incidents through preventive work.
Hardware Diagnostics Windows
Project 004

Account Security & OPSEC

Security audit and hardening of accounts, platforms, and devices for all clients. Implemented 2FA across every critical account, reviewed and terminated unauthorized active sessions, and established OPSEC protocols to prevent phishing and credential compromise — tailored for high-visibility public figures.

Zero successful account compromises across all managed clients following protocol implementation. Ongoing security posture maintained.
2FA OPSEC Security Audit
Project 005 — In Development

Real-Time Moderation & Control Platform

A web platform for real-time submissions with role-based moderation and approval (RBAC). Built from scratch on self-hosted infrastructure, designed for controlled inputs and predictable behavior during live operations. AI-assisted development (Claude, ChatGPT, Copilot) used as part of the toolchain.

Real-time moderation with RBAC logic on self-hosted infrastructure. Active development started late 2025.
SaaS Real-time Node.js AI-assisted dev Self-hosted
04 — Why Work With Me

What Makes Me Different

Incident Response Availability

Available across time zones for incident response. When production systems break, I focus on fast triage, stable recovery, and clear next steps.

Problem-Solver Mindset

I don't stop until the problem is solved. No passing issues off to "level 2" or giving up. I research, troubleshoot, and implement solutions until your systems work perfectly.

Open to Relocation — Albania / Balkans

Uruguayan passport grants visa-free entry to Albania. All travel and relocation costs covered personally — zero financial burden on the employer. Only requirement: standard work permit processing. Available to start immediately.

Production Experience

Managed live systems where downtime directly impacts operations. Focused on reliability, fast recovery, and stable infrastructure under pressure.

Clear Communication

I understand what clients need because I listen. Fluent in Spanish and professional English. I explain technical issues in simple terms and keep you informed every step of the way.

Operational Discipline

Remote-first with availability for on-site work when needed. Clear scope, documented changes, and predictable operations.

Client Feedback

What Clients Say

References available upon request. Client details are kept private by default.

7 Active Clients
0 Breaches Across All Clients
5+ Years · 100% Retention

I keep client details private by default — it comes with the nature of security work. But if you need to verify my track record before moving forward, I'm happy to connect you directly with current or past clients across Spain, UK, and LATAM.

05 — Technical Stack

Tools & Technologies

Systems & Infrastructure

AWS EC2 / Cloud Infrastructure
Linux (Debian / Ubuntu / Armbian)
Windows / Active Directory
Networking / Firewalls / VPN
SSH / Remote Management
Hardware Diagnostics & Repair

Development & Security

Python
JavaScript / HTML / CSS
Bash Scripting
Nginx / Apache / Web Servers
Security Tooling / OPSEC
VoIP / Network Services
06 — Let's Connect

Open to new opportunities.

Available for infrastructure / systems administration roles, IT support positions, and freelance operational support. Remote work globally (LATAM, UK, EU). Let's discuss uptime, security requirements, and how I can help.

Email
erick@erickstech.com
→
LinkedIn
linkedin.com/in/erick-se
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GitHub
github.com/ericks-dev
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