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Alexa Amundson 292fa97a8e kpi: auto-update metrics 2026-03-13

RoadChain-SHA2048: 9f948f149bd9f508
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RoadChain-Full: 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

2026-03-13 01:07:28 -05:00

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Alexa Amundson

Systems Engineer

amundsonalexa@gmail.com | github.com/blackboxprogramming

Summary

Systems engineer managing 256 systemd services across a 7-node Linux fleet. Deep expertise in kernel tuning, power optimization, thermal management, device drivers (Hailo-8 NPU, I2C, GPIO, UART), and distributed system reliability with automated monitoring and self-healing.

Experience

BlackRoad OS | Founder & Systems Lead | 2025–Present

Linux Systems

Manage 5 Raspberry Pi nodes (Debian Bookworm) + 2 Ubuntu VMs
Configure and tune 256 systemd services and 35 timers
Kernel parameter optimization: CPU governors, swappiness, dirty_ratio, WiFi power management
Custom udev rules for device persistence (vcio, Hailo-8, USB peripherals)
Boot configuration: cmdline.txt, config.txt, /etc/sysctl.d/ for persistent tuning

Hardware & Device Drivers

2× Hailo-8 AI accelerators: PCIe driver installation, /dev/hailo0 device management
I2C devices: Pironman5 OLED display (0x3c), sensor interfaces
UART/serial: CP2102 adapters, BL808 RISC-V dev boards
GPIO: IR receivers, custom peripheral control
NVMe storage: 1 TB drive on Octavia for high-speed workloads

Performance Engineering

Resolved thermal throttling: identified runaway processes, reduced 73.8°C → 57.9°C
Fixed undervoltage: removed overclock settings, tuned voltage (+95mV recovery)
Power optimization deployed fleet-wide: conservative governors, GPU memory reduction (256→16 MB)
Boot-persistent config via tmpfiles.d, rc.local, sysctl.d

Networking

WireGuard mesh VPN across all nodes
DNS infrastructure: Pi-hole, PowerDNS (Docker), dnsmasq with custom zones (.cece, .blackroad)
Nginx (48 sites), Cloudflare tunnels (4), Tailscale (9 peers)
Network diagnostics: 106 active connections monitored, 867 processes tracked

Security

Credential rotation: migrated secrets from crontabs to env files (chmod 600)
Identified and removed obfuscated cron dropper (malware)
SSH key audit: 50+ keys on Alice/Octavia
UFW firewall management on edge nodes

Technical Skills

OS: Debian, Raspberry Pi OS, Ubuntu, systemd, udev, kernel tuning Hardware: Hailo-8 NPU, Raspberry Pi 5, I2C, GPIO, UART, PCIe, NVMe Networking: WireGuard, Tailscale, Nginx, DNS (Pi-hole, PowerDNS, dnsmasq) Security: SSH hardening, credential management, firewall (UFW/nftables) Scripting: Bash (212 tools, 91 scripts), Python

Metrics

Metric	Value
Systemd services	256
Fleet nodes	7
AI acceleration	52 TOPS
Processes managed	867
Network connections	106
Automated tasks	52
CLI tools	212

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