IT Systems & Security Specialist

Production-Grade Infrastructure. Zero Downtime.

IT Infrastructure Specialist focused on Linux systems, network security, and real-time environments where failure is not an option. 5+ years hands-on across system administration, incident response, hardware diagnostics, and security. Based in Montevideo, Uruguay — available for relocation to Albania, Kosovo / EU.

View my work →
Professional workspace by Toni Cuenca on Pexels
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.

Platform Security

Account and platform hardening (Google, YouTube, Twitch). Multi-layer authentication (2FA, hardware keys), access control, and session reviews to prevent unauthorized access.

Twitch YouTube 2FA Hardware Keys

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

Real-Time Interface Systems

Real-time interface systems with event-driven behavior (browser-based UIs, WebSockets, automation). Built to stay stable under production pressure.

OBS Interface Systems WebSockets
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
2022 — Present

Real-Time Interface Systems & Automation

Client Production Environments — Remote

Designed and delivered real-time interface systems for production environments using HTML, CSS, and JavaScript (event-driven UIs, WebSockets, automation). Built operational tooling to reduce manual steps and improve reliability during high-pressure workflows.

Deployed stable real-time interface systems across multiple client environments with a reliability-first approach.
OBS JavaScript WebSockets
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

Real-Time Interface Systems

Development of real-time interface systems for production environments. Event-driven UI behavior, automated triggers, and dynamic data display — built with HTML, CSS, and JavaScript, integrated via browser sources where required.

Deployed across multiple real-time environments. Reduced manual operator workload and improved reliability during live operations.
JavaScript OBS WebSockets
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.

Proven Track Record (EU/UK)

Worked with clients across Spain, UK, and LATAM. References available upon request. Track record backed by retention, uptime, and security outcomes.

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
OBS / Real-Time Production Tooling
Security Tooling / OPSEC
Real-time Interface Tooling
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
→
GitHub
github.com/ericks-dev
→