Stewart Alexander

Network Security and Infrastructure Consultant for Small Businesses

• Advised 3 SMBs on network security best practices, implementing PCI-DSS, Zero Trust, and least privilege architectures
• Conducted PCI-DSS gap assessments and vulnerability scans for SMB clients.
• Engineered custom automation solutions using MySQL, PostgreSQL, SaltStack, Ansible, OSQuery, and Python for efficient data management, saving one company more than $30,000
• Developed web interfaces with Flask, CSS, HTML5, and JavaScript, enabling intuitive automation control and monitoring.

Key Technologies: Python (NAPALM, Netmiko, Paramiko Pyshark, Requests / HTTPX), Ansible, PiHole, Ubuntu, Wireless Infrastructure, SaltStack, OSQuery, MySQL, PostgreSQL, Flask, CSS, HTML5, JavaScript, Network Security, PCI-DSS, Zero Trust, Least Privilege Architecture

Leading AI-Powered Robotics Network Infrastructure for Automated Warehouse Operations

• Architected hybrid-cloud (AWS & GCP) network for AI-driven warehouse robotics, scaling to multiple sites.
• Built Zero Trust architecture with Juniper SRX, Palo Alto, pfSense; blocked advanced threats, protected AI/ML data.
• Automated provisioning via Saltstack, Python and Bash tooling cut deployment time 60%.
• Drove 99.9% uptime with SRE monitoring stack (Docker, Cisco, Meraki, Ubiquiti).
• Tuned networks for sub-millisecond latency, enabling real-time AI inference and computer-vision robotics.

Key Technologies: AWS, Google Cloud Platform, Docker, Terraform, Python (NAPALM, Netmiko, Paramiko Pyshark, Requests / HTTPX), Saltstack, Network Security, Zero Trust Architecture, AI/ML Infrastructure, Robotics Networking, Cisco, Meraki, Ubiquiti, Juniper switches and SRX Next Generation Firewalls (NGFWs), Palo Alto Firewalls, pfSense

Senior Infrastructure Engineer for a North Carolina Community College

• Designed enterprise network architecture for Alamance Community College, enabling rapid scaling and streamlined product development.
• Managed multi-cloud Linux environments (RHEL, Ubuntu, CentOS) and automated CI/CD delivery via Jenkins, OSQuery, and SaltStack.
• Implemented Zero Trust security including VPN, Palo Alto/Cisco firewalls, IDS, and disaster recovery strategy cutting downtime by 85%.
• Deployed real-time monitoring with SaltStack and Python, ensuring high availability across two college campuses.
• Mentored junior engineers on networking, Linux, and DevOps best practices.

Key Technologies: Linux System Administration, Python (NAPALM, Netmiko, Paramiko Pyshark, Requests), Jenkins CI/CD, Ansible Configuration Management, SaltStack, Network Security, Multi-Cloud Architecture, DevOps Practices, PFSense & Pal Alto Firewalls

Enterprise Mainframe and Linux Systems Consulting for Leading Open Source Technology Company

• Provided specialized AIX Power Systems engineering for Red Hat enterprise clients, supporting mission-critical UNIX workloads and legacy system migrations.
• Designed zOS mainframe-to-hybrid cloud integration strategies, enabling seamless enterprise transitions while preserving existing mainframe investments.
• Optimized AIX and zOS system performance through custom solutions, achieving 25% processing efficiency improvement for key client workloads.

Key Technologies: IBM AIX, zOS Mainframe Systems, UNIX System Administration, Red Hat Enterprise Linux, Performance Tuning, Legacy System Integration, Enterprise Architecture

Quality Assurance and Testing Leadership for Global Cash Automation Technology

• Led comprehensive testing for ARCA's cash automation systems deployed across 50+ countries and 500+ financial institutions globally.
• Designed automated testing frameworks for electromechanical systems, reducing manual testing time by 50% and improving reliability.
• Applied 5Why/8D problem-solving methodologies to identify root causes, achieving 40% reduction in customer-reported issues.

Key Technologies: Test Automation, Python Development (PANDAS, NumPy, NAPALM, Requests, FastAPI), Quality Assurance, Banking Technology, Cash Recycling Systems, International Compliance Standards, Root Cause Analysis

Autonomous Vehicle and Robotics Network Architecture for Advanced Research Applications

• Architected high-availability mesh network integrating Locata ground-based GPS, delivering sub-3 cm positional accuracy and boosting crash-test precision by 50%.
• Implemented Zero Trust security and real-time monitoring with millisecond-level latency tracking, protecting autonomous vehicle research data and optimizing performance.
• Led robotic–vehicle network integration projects and set industry networking standards with automotive partners for autonomous testing and certification.

Key Technologies: Autonomous Vehicle Networking, Wireless Mesh Networks, GPS/GNSS Systems, Real-time Communications, Robotics Integration, Automotive Testing Infrastructure

Enterprise Systems Engineering and Product Development for Fortune 500 Global Technology Leader

• Resolved 600+ critical tickets for Fortune 500 clients as IBM System X BladeCenter & Pure Systems Network Product Engineering lead.
• Developed technical documentation improving first-call resolution rates by 35% across IBM's global support organization.
• Received IBM's 'Above and Beyond Excellence Award' (October 2013) for outstanding technical contributions and customer support excellence.

Key Technologies: IBM BladeCenter, Pure Systems, Enterprise Networking, Data Center Infrastructure, Technical Support, Problem Resolution, Enterprise Architecture

24/7 Systems Operations for Leading Analytics Software Company

Managed overnight operations for SAS production analytics environments—monitoring mainframes, servers, and networks; performing scheduled maintenance; responding to alerts; and documenting incidents—to maintain uninterrupted service for Fortune 500 clients.

Key Technologies: Enterprise Systems Operations, Mainframe Administration, 24/7 Monitoring, Incident Response, Service Level Management

Enterprise Network Engineering and Customer Support for Leading Ethernet Infrastructure Company

• Optimized network performance and troubleshooting for complex enterprise environments, improving customer satisfaction scores and reducing escalation rates.
• Achieved 'Technical Superstar' recognition for exceptional Ethernet expertise and optimizing call ticket resolution processes.

Key Technologies: Extreme Networks Switching, Enterprise Ethernet, VLAN Configuration, Network Troubleshooting, Technical Support, Customer Success

IT Leadership and Infrastructure Management for Independent Educational Institution

Led comprehensive IT infrastructure transformation for Duke School, designing campus network architecture, managing technology budgets, and supporting 400 staff, and 1000+ students.

Key Technologies: Educational Technology, Campus Networking, Ubiquiti Wireless Infrastructure, Fortinet Fortigate NGFWs, Mac and PC support

Relevant Coursework: Computer Science, Physics, Meteorology

Professional Certifications

• CCSP - Certified Cloud Security Professional (2022–Present)
• RHCE - Red Hat Certified Engineer (2014–Present)
• ENA - Extreme Networks Associate (2006)
• Motorola Wireless Platform Technical Engineer (2006)

Industry Recognition

• IBM "Above & Beyond Excellence Award" (October 2013)
• Extreme Networks "Technical Superstar" Award (2006)

Technical Publications

• Medium.com – "20 Awesome Command-Line Tools for Mac"; 41,000+ total views, 1,000+ monthly readers
• LinuxTech.me – Creator of Linux portal serving 2,500+ monthly users with NLP-powered Command Explorer