CrawfyTech Engineering

Expert network engineer with 15+ years of experience designing and implementing secure, robust, low-latency networks. Proven track record in leading major infrastructure projects and resolving critical system outages while maintaining effective stakeholder communication.

Core Expertise

Network Design & Implementation

IP address scheme design
CIDR & Subnetting
Load Balancing & High Availability
VLAN trunks & Link Aggregation
BGP & OSPF routing protocols

Security & Firewalls

CIS, NIST & ISO 27001 frameworks
Cisco FMC, Fortinet, SonicWALL
Deep packet inspection & IPS
IPSEC & SSL VPN
Multi-factor Authentication

Infrastructure & Systems

Linux, VMware, Windows
AWS cloud administration
HP Aruba, Cisco networking
Ruckus wireless systems
Storage & backup solutions

Recent Projects & Achievements

City of East Point

Enterprise System Administrator

March 2023 - March 2024

Upgraded and hardened Cisco firewall infrastructure, significantly improving security posture
Facilitated migration from Duo to Microsoft MFA, adding major security layer
Redesigned IP schemes reducing network latency and improving application performance
Migrated SCADA IPsec and SSL VPNs across cloud providers

City of Roswell

Network Engineer

January 2015 - February 2023

Led complete network and data center infrastructure refurbishment
Upgraded fiber backbone from 1Gbps to 10Gbps using HP Aruba 6200 switches
Established active-active remote data center with BGP load balancing
Implemented Fortinet Fortigates, improving web application performance dramatically
Enhanced citywide WLAN by migrating to Ruckus infrastructure
Incorporated CIS and NIST security policies

Mark Crawford