Security & Firewalls
- Advanced Sophos administration (XG/XGS)
- High Availability (HA) and failover setup
- Site-to-site and remote access VPNs
Available for remote work
Networks that stay up.
Environments that leave no gaps.
I'm Anderson Argenta, a Network and Security Administrator focused on firewall administration, network security and keeping mission-critical corporate infrastructure running.
- Sophos XG/XGS
- Ubiquiti UniFi
- Mikrotik
- Aruba
$ whoami anderson.argenta $ cat profile.txt role : Network & Security Administrator focus : Firewalls · Networking · Security company : Raidbr location : Caxias do Sul — Brazil $ status --environment ● perimeter ............ protected ● high availability .... active ● corporate vpn ........ online $ _
The person behind the console
IT professional with hands-on experience in network security, firewall administration and infrastructure management.
I currently work at Raidbr, where I optimize networks, implement security policies and support critical corporate environments — the kind where downtime is expensive and a careless configuration is even more so.
I keep improving my English by working straight from official vendor documentation — release notes, architecture guides and knowledge bases — which is how I learn and troubleshoot every day.
- Role Network & Security Administrator
- Based in Caxias do Sul, Brazil · UTC−3
- Education Technologist Degree in Computer Networks — Uniftec
- Certification Sophos Architect — completed
Core skills
The two areas I work on every day, from the network perimeter down to the access layer.
Network Infrastructure
- Ubiquiti UniFi controller management
- Switching and routing: Aruba, Mikrotik and Dell
- Segmentation, VLANs and traffic policies
- Advanced connectivity troubleshooting
- Networking
- Cybersecurity
- Hardware Management
- High Availability
- VPN
- Troubleshooting
What I deliver in practice
Real infrastructure problems, solved with method, documentation and a focus on continuity.
Perimeter protection
Deploying, reviewing and hardening Sophos firewalls: rules, NAT, filtering and secure service publishing.
Corporate networks
Designing and supporting wired and Wi-Fi networks with UniFi, switching and routing on Aruba, Mikrotik and Dell, VLAN segmentation and diagnosis of intermittent issues.
Continuity and availability
High Availability and failover, redundant links and stable VPNs so operations keep running when something fails.
Certification and research
What I have achieved and where my attention goes outside day-to-day work.
Sophos Architect
Certification in Sophos solution architecture, focused on designing complex environments, integrating components and applying vendor best practices.
CompletedAutonomous robotics in agriculture
Research and planning of an autonomous robotic system using artificial intelligence and computer vision to automate grape harvesting in the Serra Gaúcha wine region of Brazil.
Research in progressWhat keeps me balanced
Away from the corporate environment and configuration screens, I spend my free time on things that keep me balanced.
- Playing the accordion
- Gaúcho and sertanejo music
- Walks in the park
- Action and comedy movies
Working remotely from southern Brazil
Southern Brazil runs on UTC−3 all year, with no daylight saving time since 2019 — close to North American time zones and a few hours behind Europe.
Caxias do Sul
Brazil · UTC−3
New York
Los Angeles
London
Berlin
- Local time in Caxias do Sul --:-- UTC−3 · no daylight saving time
- Work model Remote only
- English Reading technical documentation daily · speaking in progress
07 — Contact
Let's talk
Whether it's network infrastructure, information security or a new opportunity, feel free to reach out on WhatsApp or LinkedIn.
Caxias do Sul, Brazil (UTC−3) · Available for remote work with teams worldwide