Experience & Credentials

About Me:

I am currently employed as a Senior Network Engineer for a midsize enterprise in the healthcare industry and am interested in working on service provider networks. I also do freelance technical writing.

Ivan Pepelnjak wrote an excellent piece “On I-Shaped and T-Shaped Skills” which highly influenced what I focus on in my career. I enjoy classical “routing and switching” which is why I worked to obtain skills to the expert level in that area. Yet, I am constantly learning and rounding out my skill set in other areas as well, such as service provider technologies, automation, wireless, datacenter technologies, and more.

The computer network represents the arteries of the modern business environment, with the data flowing across as the lifeblood. By having expert-level core networking knowledge and fundamental knowledge of what interacts with the network as a whole, I am in a better position to help an organization thrive on produced and consumed data.

I am a member of the Cisco Champion program for 2019, and I participated in GestaltIT’s Networking Field Day 19.


  • I designed and integrated a VeloCloud-based SD-WAN environment to migrate away from a 400-site MPLS L3VPN WAN. This included a 15-site trial/PoC environment from one provider, followed by a full production rollout using a different provider. During the migration phase, there were two separate MPLS L3VPNs, two separate SD-WAN environments, two datacenters, and 400 sites supported simultaneously. I used BGP at the datacenters and various kinds of filtering and BGP policy adjustments to harmoniously stitch all of the environments together for full connectivity between all sites.
  • I designed and implemented the network portion of an enterprise disaster recovery plan (similar to but slightly more complex than my post Easy Disaster Recovery Plan). This included segregating production and DR traffic with VRFs and BGP filtering.
  • I participated in the networking aspects of moving an in-house datacenter to a colocation facility and detailed the aspects of maintaining connectivity between the old and new datacenters during the migration and lessons learned during the process. This includes working with Cisco’s Nexus datacenter series switches running NX-OS.


  • I wrote a 3-part series On Learning describing the methods I discovered which work best for me to learn, retain, and manage large amounts of knowledge.
  • Using Python, YAML, Jinja2 and multithreading to rapidly generate and push configurations to multiple devices. One of the ways I used this knowledge in production was to generate a large configuration set of firewall rule changes.
  • I needed a simple configuration backup system for the hundreds of Cisco routers and switches on my network. I initially used RANCID, but then learned how to use Oxidized.


  • University of Central Florida (UCF):
    • Bachelor of Science: Information Systems
  • Cisco:
  • Juniper: JNCIA
  • VMware: VCP-DCV
  • Certified Wireless Network Professional (CWNP): CWNA

Completed Training:

  • Cisco CCIE Expert Level Training (Cisco 360):
    • 25 full non-graded & 15 full graded 8-hour CCIE practical labs
  • Cisco CCDE by Micronics
  • Cisco CCIE Service Provider by Micronics

Contact Information:


Experience & Credentials   |   Media & Sponsored Content

 LinkedIn: jedcasey     Twitter: @Wax_Trax

 GitHub: Wax-Trax    GoodReads

I am open to new challenges and opportunities, particularly in the service provider vertical. I am also interested in freelance writing projects and remote work.