a
anz4ks

Gustavo H

@anz4ks

Infrastructure and Security Systems Engineer

Brazil
English
About me
Multidisciplinary Tech Specialist focused on performance, security, and reliability. 6+ years of hands-on experience across Rust development, Linux systems, advanced networking (MikroTik), and cybersecurity. I work across the full stack — from infrastructure and network design to backend systems — solving complex technical problems, optimizing performance, and hardening critical environments. Strong in debugging, automation, and building resilient, high-efficiency systems.... Read more

Skills

a
anz4ks
Gustavo H
Offline • 
Average response time: 1 hour

See my services

Bug Fixes
I will fix bugs or issues in your website or backend fast
From$40 / projectMore details
Programming & Tech
I will fix critical server or system issues fast urgent support
From$150 / projectMore details

Work experience

Freelancing_Career

Infrastructure & Security Specialist

Freelancing Career • Full-time

Feb 2021 - Mar 2026 • 5 yrs 1 mo

Worked across infrastructure, networking, cybersecurity, and software development in real-world production environments. Led end-to-end technical projects, including network architecture (MikroTik), Linux/Windows server hardening, and high-availability setups (failover, load balancing, VPNs). Performed vulnerability assessments and penetration testing to improve system security and resilience. Built high-performance backend systems and automation tools using Rust, focused on reliability and operational efficiency. Specialized in advanced troubleshooting, debugging critical failures, and restoring systems under high-pressure scenarios.