Resume
Douglas Collins
Systems & Cybersecurity Engineer | DevOps Specialist
North Carolina, USA | EST Time Zone
📋 Professional Summary
Results-driven Systems Analyst with 10+ years of hands-on experience in IT infrastructure, cybersecurity, and DevOps. Proven track record of designing and implementing secure, scalable enterprise solutions. Expertise in VMware virtualization, network segmentation, automated patch management, and compliance frameworks (ISO27001, GDPR).
👨💼 Professional Experience
System Analyst
Manufacturing Corporation | North Carolina January 2021 – Present
**Key Achievements:**
- Designed and maintained VMware-based infrastructure (ESXi 7.0, vSphere) running on Dell R640 servers supporting 100+ virtual machines
- Led network segmentation project implementing 8 VLANs across manufacturing plant, improving security posture and reducing attack surface by 60%
- Developed automated patch management solution using WSUS and PowerShell, reducing manual patching time by 80% and achieving 95% compliance
- Migrated 300+ users to Microsoft Intune and O365, enabling modern device management and improving collaboration
- Implemented Palo Alto PA-1410 firewalls with Prisma Access VPN, replacing legacy Fortinet infrastructure
- Ensured compliance with ISO27001 and GDPR standards through security audits and vulnerability remediation
**Technologies:** VMware ESXi, vSphere, Cisco Catalyst, Palo Alto Firewalls, WSUS, PowerShell, Active Directory, Zerto, Intune, O365
IT Support Specialist
Manufacturing Corporation | North Carolina June 2018 – December 2021
**Key Responsibilities:**
- Managed internal ticketing system (Lansweeper) handling 50+ tickets per week with 95% satisfaction rating
- Deployed and configured Unifi access points and switches across 5 branch locations
- Performed device onboarding, Active Directory user management, and Group Policy administration
- Created comprehensive technical documentation for IT processes and Standard Operating Procedures (SOPs)
- Trained helpdesk staff on troubleshooting methodologies and escalation procedures
- Supported SAP ERP system and manufacturing equipment (CNC machines, Modula vertical storage)
**Technologies:** Windows Server, Active Directory, Unifi, Lansweeper, SAP, GPO
🛠️ Technical Skills
Virtualization & Cloud
- VMware ESXi, vSphere
- Proxmox VE
- Docker, Docker Compose
- Microsoft Azure (basics)
Networking
- Cisco Catalyst, Meraki
- Palo Alto Firewalls
- pfSense, Unifi
- VLANs, SD-WAN, VPN
Security & Compliance
- Palo Alto, Fortinet Firewalls
- Wazuh SIEM, ELK Stack
- Nessus Vulnerability Scanning
- ISO27001, GDPR
Automation & Scripting
- PowerShell (advanced)
- Bash scripting
- Ansible playbooks
- Git version control
Operating Systems
- Windows Server 2016-2022
- Ubuntu Server, Debian
- Active Directory, DNS, DHCP
- Windows 10/11 administration
Monitoring & Management
- Zabbix, Grafana
- WSUS patch management
- Microsoft Intune
- Lansweeper asset tracking
🎓 Education & Certifications
**CompTIA Security+** *(In Progress - Expected 2026)*
Comprehensive cybersecurity certification covering threats, vulnerabilities, and risk management
**Cybersecurity Training**
- TryHackMe: Completed 50+ rooms covering penetration testing, security operations, and incident response
- HackTheBox: Active participant in CTF challenges and vulnerable machine exploitation
- MITRE ATT&CK Framework training
**Continuous Learning**
- Self-hosted homelab running production-grade infrastructure
- Regular participation in cybersecurity communities and forums
- Staying current with emerging technologies through hands-on experimentation
🏆 Key Projects & Achievements
- Network Segmentation Initiative: Led complete redesign of flat network into 8 segmented VLANs following zero-trust principles
- Automated Patch Management: Reduced patching overhead by 80% through PowerShell automation and WSUS optimization
- Firewall Migration: Successfully migrated from Fortinet to Palo Alto infrastructure with zero downtime
- Cloud Migration: Transitioned 300+ users to cloud-based services (O365, Intune) improving flexibility and security
- Homelab Infrastructure: Built and maintain personal lab environment for continuous learning and proof-of-concept testing
Ready to Discuss Opportunities?
I'm actively seeking roles in DevOps, Systems Engineering, and Cybersecurity.