I design, secure, and automate IT infrastructures using Linux, Python, and Docker.
Focused on building resilient, monitored, and production-ready systems.
GitHub: alvarezops | LinkedIn: José Álvarez
- Network & Security: Cisco IOS-XE, Wireshark, Nmap, Network Hardening, DNS Security. (Unbound)
- Automation: Python (Netmiko, Requests, Dotenv), Bash Scripting, Git Workflow.
- Infrastructure: Linux (Ubuntu 24.04 LTS), Docker & Docker Compose, Raspberry Pi, ESP32.
- Observability: Prometheus, Grafana, Node Exporter, MQTT, Node-red, InfluxDB.
- Dev Tools: PyCharm Professional, Anaconda, Jupyter Notebook, VsCode.
Status: Completed & Documented
- Enterprise-grade IoT telemetry infrastructure (ESP32/MQTT/TLS) with full Edge-to-Cloud orchestration.
- Impact: Implemented Security-First design using VLAN segmentation, Cloudflare Zero Trust, and time-series analytics (InfluxDB/Grafana).
Status: Completed & Documented
- Automated hybrid backup infrastructure with 3-2-1 strategy: Local → Pi Storage → Encrypted Cloud Copy.
- Impact: Ensured data integrity and zero-knowledge encryption for critical files.
Status: Completed & Documented
- Private recursive DNS resolver (Pi-hole + Unbound) to eliminate ISP tracking and ad-telemetry.
- Impact: Network-wide security hardening and DNSSEC validation.
Formal Education: SMR (Sistemas Microinformáticos y Redes) - EU EQF Level 4 (In Progress)
Certifications:
- Fortinet NSE 3: Network Security Associate
- Google Cybersecurity Professional Certificate V2
- CCNA: Introduction to Networks
- CCNA: Switching, Routing, and Wireless Essentials
- Linux Essentials (LPI / Cisco)
- Junior Cybersecurity Analyst Career Path
- Network Technician Career Path
Looking for roles in NOC, Junior SysAdmin, or IT|OT Operations.
I bring a security-first mindset and the ability to automate repetitive tasks to improve operational efficiency.