20 role-specific resumes with verified KPIs — BlackRoad only, no prior experience

RoadChain-SHA2048: 428ab11c02ce78d6
RoadChain-Identity: alexa@sovereign
RoadChain-Full: 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

roles/09-systems-engineer.md

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+# Alexa Amundson
+
+**Systems Engineer**
+
+amundsonalexa@gmail.com | [github.com/blackboxprogramming](https://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 | 2024–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 |