Specialized in high-availability Linux environments, network troubleshooting, Bash automation, and system diagnostics.
I am Marcos Vasconcellos de Andrade, an IT Infrastructure and Tier 2/3 Technical Support Analyst with over 25 years of hands-on experience in IT, including a 30-year career with the Brazilian Army managing high-availability Linux server environments and enterprise network infrastructure across nationwide sites.
I specialize in root-cause troubleshooting, Linux systems administration (CentOS, Debian, Ubuntu), network security, and routine task automation via Bash scripting and Python. Notably, I architected and deployed a customized Linux Mint build (remaster) that standardized enterprise workstations and cut setup and helpdesk ticket resolution time by 99%.
I hold a degree in Internet Systems from IFB (2020) and a Postgraduate degree in Data Engineering and Architecture with AI certification from XP Educação (2024). I combine deep system and network administration with advanced database diagnostics (Oracle SQL), DataOps, and Generative AI workflows.
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Description: A curated collection of production-ready Bash/Shell scripts for Linux system administration, Tier 2/3 technical support, server health monitoring (disk space, service availability), automated backups, and network ICMP ping sweep diagnostics.
Technologies used: Bash Scripting, Linux (Debian, Ubuntu, CentOS), Systemd, Networking.
Description: A technical blog dedicated to sharing articles, guides, and insights on Linux systems, technical automation, and artificial intelligence.
Technologies used: Jekyll, Chirpy Theme, HTML5, CSS3, GitHub Pages.
Description: A fast stock analysis platform developed with Python and financial APIs, demonstrating real-time data ingestion, API troubleshooting, and system responsiveness.
Link to project on GitHub
Description: Web application for property management with role-based access control and backend database integration.
Link to project on GitHub