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alexa-amundson-resume/roles/13-network-engineer.md
Alexa Amundson 292fa97a8e kpi: auto-update metrics 2026-03-13
RoadChain-SHA2048: 9f948f149bd9f508
RoadChain-Identity: alexa@sovereign
RoadChain-Full: 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
2026-03-13 01:07:28 -05:00

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Alexa Amundson

Network Engineer

amundsonalexa@gmail.com | github.com/blackboxprogramming


Summary

Network engineer operating a multi-layer network stack: WireGuard mesh VPN, Tailscale overlay (9 peers), RoadNet WiFi mesh (5 APs), 4 Cloudflare tunnels serving 48+ domains, DNS infrastructure (Pi-hole + PowerDNS + dnsmasq), and 48 Nginx reverse proxy sites across a 7-node fleet.


Experience

BlackRoad OS | Founder & Network Lead | 2025Present

VPN & Mesh Networking

  • WireGuard mesh VPN (10.8.0.x subnet) with DigitalOcean hub routing to all edge nodes
  • Tailscale overlay network: 9 peers for management access across network boundaries
  • RoadNet WiFi mesh: 5 access points on non-overlapping channels (1, 6, 11)
  • Dedicated subnets: 10.10.{1-5}.0/24 per node with NAT through wlan0

DNS Infrastructure

  • Pi-hole on Alice: fleet-wide ad blocking and DNS resolution
  • PowerDNS on Lucidia (Docker): authoritative DNS for custom zones
  • dnsmasq on Cecilia: custom DNS zones (.cece, .blackroad, .entity, .soul, .dream)
  • Cloudflare DNS for 48+ public domains

Reverse Proxy & Load Balancing

  • 48 Nginx sites routing traffic to fleet services
  • 4 Cloudflare tunnels for zero-trust external access
  • Per-service routing: API, web, git, AI inference endpoints
  • SSL/TLS termination via Cloudflare

Monitoring & Diagnostics

  • 106 active network connections monitored across fleet
  • 867 processes tracked for network resource usage
  • SSH-based fleet probing with health checks
  • Daily KPI collection including connection counts and peer status

Security

  • Zero-trust architecture via Cloudflare tunnels (no exposed ports)
  • WireGuard encryption for all inter-node traffic
  • UFW firewall on edge nodes (INPUT DROP policy)
  • SSH key management across 50+ authorized keys

Technical Skills

VPN: WireGuard, Tailscale DNS: Pi-hole, PowerDNS, dnsmasq, Cloudflare DNS Proxy: Nginx, Cloudflare Tunnels WiFi: hostapd, RoadNet mesh configuration Security: UFW, nftables, SSH hardening, TLS Monitoring: Custom probes, ss, connection tracking


Metrics

Metric Value
VPN nodes 7 (WireGuard)
Tailscale peers 9
WiFi APs 5
Domains 48+
Nginx sites 48
CF tunnels 4
Connections 106