Systems Engineer

David Rosales

Senior Systems Architect & Security Innovator Las Vegas, NV

702-***-**** ******.****@*****.***

GitHub: github.com/TheHackersWorkshop

U.S. Patent Holder: No. 12,351,126

PROFESSIONAL SUMMARY

Solutions-oriented Senior Engineer with 30+ years of professional experience in hardware-software integration, kernel-level security, and enterprise infrastructure. Expert in bridging legacy systems with modern JSON-driven architectures. Sole inventor of a patented security system and author of the "Sentinel- Integrity" framework. Proven track record of resolving Tier III escalations by performing deep-dive root cause analysis that standard diagnostics miss.

CORE COMPETENCIES

• Infrastructure: Windows Server (2000–2022), Debian 12, Active Directory, Group Policy, DNS/DHCP.

• Virtualization & Cloud: VMware ESXi, vCenter, VirturalBox, Hybrid-Cloud integration.

• Security & R&D: Linux Security Modules, Kernel-level enforcement, U.S. Patent development.

• Automation: PowerShell, Python, Bash, JSON-driven modular architectures.

• Multimedia & Design: Professional video production and asset creation using GIMP, Inkscape, and Kdenlive.

NOTABLE INNOVATIONS

• U.S. Patent No. 12,351,126: Developed a hardware-based security detection system, demonstrating expertise in the physical-to-digital security interface.

• Cross-Platform Security Research (2026):

• Windows: Published an Active Directory security framework on GitHub that achieved 40+ clones within the first 24 hours.

• Linux: Architected the "Sentinel-Integrity" project, utilizing eBPF and Linux Security Modules (LSM) for kernel-level monitoring and enforcement.

• Custom Diagnostic Tooling: Authored a suite of open-source administrative tools for monitoring, diagnostics, and automation across both Linux and Windows environments. PROFESSIONAL EXPERIENCE

Founder / Lead Product Engineer Reimagined Innovations LLC Las Vegas, NV 03/2022 – 03/2025

• Invention & Patent Development: Spearheaded the end-to-end lifecycle of the Catalytic Converter Alarm System (CCAS); transitioned the concept from prototype to a market-ready product, culminating in the issuance of U.S. Patent No. 12,351,126.

• Full-Stack Business Architecture: Orchestrated the launch of the LLC, including the design and deployment of the web infrastructure, secure payment gateways, and automated marketing channels.

• Digital Multimedia Production: Utilized open-source professional suites (GIMP, Inkscape, Kdenlive) to produce all commercial video content, branding assets, and promotional materials, maintaining high-tier production value with zero external overhead.

• Agile Project Pivot: Engineered and launched the "Las Vegas Urban Games" scavenger hunt platform; managed the technical promotion and operational logistics to drive community engagement.

• Infrastructure Management: Administered the hybrid Windows/Linux server environments and virtualized clusters (VMware/Hyper-V) required to host and secure the company’s product and gaming platforms.

Founder / Principal Systems Engineer The Hackers Workshop LLC Las Vegas, NV 07/2020 – 10/2021

• Business Operations: Orchestrated the end-to-end formation of a technical LLC, including legal filings, business banking architecture, and operational compliance.

• Hardware R&D & Product Design: Engineered and prototyped educational hardware kits and custom electronics, bridging the gap between physical circuitry and software logic.

• Systems Architecture: Designed and maintained the directory services and access control infrastructure for a mixed-OS environment (Windows/Linux) supporting development and testing.

• Technical Documentation & Open Source: Authored terminal-based monitoring frameworks and diagnostic tools now utilized in open-source educational repositories to support Tier II/III escalation logic.

Senior Systems Specialist (Confidential Contract / NDA) Las Vegas, NV 04/2009 – 12/2019

• Legacy Software Remediation: Successfully salvaged a critical educational application after a system-wide hardware upgrade; performed deep-code analysis of XML-based source files to identify and strip incompatible driver calls, restoring full functionality when official support was unavailable.

• Infrastructure Optimization: Maintained high-availability standards for mixed-environment systems, ensuring uptime through proactive maintenance and custom hardware solutions.

• Hardware Engineering & Prototyping: Designed and fabricated custom electronic components

(signal receivers and audio equipment) using limited resources, demonstrating advanced proficiency in circuit repair and signal processing.

• Advanced Technical Research: Completed intensive self-directed deep dives into C++, Python, and Arduino architectures; mastered Linux kernel fundamentals and system administration during a decade-long period of continuous professional development. TECHNICAL PROJECTS & OPEN SOURCE

GitHub: github.com/TheHackersWorkshop

• Security & Systems Architecture:

• Windows-Admin-Command: Developed a professional-grade PowerShell management CLI for advanced Active Directory administration.

• Sentinel-Integrity / Watcher.py: Built behavior-driven system monitoring and threat detection tools for Linux kernel security.

• Headless Monitoring Whitepaper: Authored a technical roadmap for Unreal Engine-based system monitoring and IT operations analytics.

• Infrastructure & Automation Toolkits:

• Modular Network Suite: Created a collection of security toolkits including an interactive DNS (dig) menu and Nmap-Suite for rapid scanning.

• Linux Admin Framework: Developed a widespread collection of command aliases, systemctl control menus, and automated permission-checking scripts.

• Embedded Systems & Hardware Engineering:

• 8-bit Computing: Designed PCB layouts for 6502-based processors and LED matrix controllers ("Computer Brain").

• IoT & Mobile Integration: Built the "LVUrbanGames" platform, utilizing Kotlin for Android and ESP32/Bluetooth Low Energy (BLE) beacons.

• Sound Synthesis: Engineered the "8BitSoundMachine," a hardware-based synthesizer inspired by vintage 1980s home computer architecture.

• Software Engines:

• Dark Journey / Forgotten Ship: Architected modular, grid-based text adventure engines in Python focusing on functional accuracy and high-quality logic flow. EDUCATION & CREDENTIALS

• U.S. Patent Holder: No. 12,351,126 (Hardware Security Systems)

• Copyright Holder: Proprietary Firmware & Embedded Logic for CCAS architecture

• Certification: CompTIA A+

• Academic: Object-Oriented Programming & Java, CSN (1999)

• Languages: PowerShell, Python, Bash, Java, C++, XML, SQL, JSON

• Hardware & Microcontrollers: Arduino, ESP32, Atmel AVR, Raspberry Pi, 8-bit Legacy Architectures (6502/Z80)

• Protocols & Logic: Serial/UART, I2C, SPI, RF Signal Processing, Kernel-level eBPF/LSM

• Tools: GIMP, Inkscape, Kdenlive, Git, VMware, Hyper-V

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