Mark Crawford

+10 years experienced network engineer. Expert at designing and implementing secure, robust, low latency networks. Led the design, management and successful completion of major infrastructure projects—including PCI-DSS compliance and cybersecurity insurance readiness.

Deep experience in resolving system outages in a timely manner while providing effective communication with key stakeholders. Proven ability to maintain strict enterprise security standards (MFA, VPN, Zero-Trust/NIST). Currently incorporating Agentic Engineering and AI-powered automation—building custom AI Agents to eliminate repetitive business and IT workflows.

Sr. Network Engineer at Imaratek (2024-04 – 2026-05)

• Network & Security Optimization: Upgraded and secured wireless and next-gen switching infrastructure for commercial clients, resulting in measurable improvements in video conferencing and SaaS application latency.
• Security Posture Enhancement: Deployed Next-Gen Firewalls (NGFW), IDS/IPS, and Multi-Factor Authentication (MFA) across client environments to enforce zero-trust network access.
• Identity & Endpoint Automation: Streamlined identity lifecycle management (onboarding/offboarding) utilizing Microsoft Entra ID and Defender for Endpoint.
• Strategic Roadmap Planning: Advised executive teams on technology allocation, reducing tech debt and structuring capital expenditure roadmaps.

Enterprise System Administrator at City of East Point, GA (2023-03 – 2024-03)

• Infrastructure Hardening: Redesigned Cisco firewall access control policies and migrated identity providers to Microsoft MFA, eliminating key security exposure points.
• Network Segmentation: Overhauled citywide IP schemes and VLAN segmentation across critical municipal facilities (including Police Dept.), significantly reducing latency and broadcast domains.
• Hybrid Cloud VPNs: Executed seamless SCADA IPsec and SSL VPN migrations between cloud providers with zero downtime to critical infrastructure monitoring.

Network Engineer at City of Roswell, GA (2015-01 – 2023-02)

• Data Center & Backbone Overhaul: Engineered migration of city fiber backbone from 1Gbps to 10Gbps using HP Aruba 6400/6200 switches; implemented BGP traffic engineering to optimize dual-ISP load balancing.
• Performance Optimization: Redesigned Fortinet/SonicWALL firewall rulebases, optimizing throughput and reducing critical financial billing run processing times from 24+ hours to under 3 hours.
• High Availability Architecture: Implemented active-active remote data center failover, HP SimpliVity HCI cluster, and citywide Ruckus WLAN infrastructure.
• Compliance & Policy: Initiated alignment of city IT policies with CIS Controls and NIST cybersecurity frameworks.

Cisco Instructor Trainer at Cisco Networking Academy (2004-11 – 2014-01)

Facilitated networking and IT courses including CCNA and Cisco IT Essentials I and II (A+ and Server+).

• Utilized Cisco routers, switches, access points, and Microsoft/Linux servers to provide industry-standard lab scenarios.

B.Sc. in Computer Science and Information Technology – University of Technology, Jamaica