Robert Hallinan

Senior Engineer I

Robert Hallinan is a Senior Engineer at NetCraftsmen. Robert holds the CCNP Enterprise (formerly CCDP & CCNP Route/Switch) and CCNP Collaboration certifications along with the CompTIA Security+ and has 10 years of industry experience. Robert has hands on experience with designing and implementing complex networks including route/switch, Cisco UCM solutions, and ASA firewall integrations. Additionally Robert has a strong interest in automation using Python.


  • Cisco Certified Network Professional (CCNP) - Enterprise
  • Cisco Certified Network Professional (CCNP) - Collaboration
  • Cisco Video Network Specialist
  • CompTIA Security+


At NetCraftsmen we are able to work on the latest network technologies for multiple clients – sharing best practices and always learning. The strong technical background and willingness to provide assistance by everyone here means you are never more than a phone call or e-mail away from an expert.


I enjoy the daily technical challenges and getting to work with some of the best engineers around in an employee-focused company. There is always someone willing to give a hand where needed and the teamwork is strong. It is really satisfying to help clients tackle their challenges head-on – whether in a planned project – or in the trenches of an emergency outage.


My time outside of work is mainly spent with my family – we have two young children who need lots of chasing around. Some of their favorite spots in Baltimore are the library, the zoo, and the aquarium.


Nick Kelly

Cybersecurity Engineer, Cisco

Nick has over 20 years of experience in Security Operations and Security Sales. He is an avid student of cybersecurity and regularly engages with the Infosec community at events like BSides, RVASec, Derbycon and more. The son of an FBI forensics director, Nick holds a B.S. in Criminal Justice and is one of Cisco’s Fire Jumper Elite members. When he’s not working, he writes cyberpunk and punches aliens on his Playstation.


Virgilio “BONG” dela Cruz Jr.

CCDP, CCNA V, CCNP, Cisco IPS Express Security for AM/EE
Field Solutions Architect, Tech Data

Virgilio “Bong” has sixteen years of professional experience in IT industry from academe, technical and customer support, pre-sales, post sales, project management, training and enablement. He has worked in Cisco Technical Assistance Center (TAC) as a member of the WAN and LAN Switching team. Bong now works for Tech Data as the Field Solutions Architect with a focus on Cisco Security and holds a few Cisco certifications including Fire Jumper Elite.


John Cavanaugh

CCIE #1066, CCDE #20070002, CCAr
Chief Technology Officer, Practice Lead Security Services, NetCraftsmen

John is our CTO and the practice lead for a talented team of consultants focused on designing and delivering scalable and secure infrastructure solutions to customers across multiple industry verticals and technologies. Previously he has held several positions including Executive Director/Chief Architect for Global Network Services at JPMorgan Chase. In that capacity, he led a team managing network architecture and services.  Prior to his role at JPMorgan Chase, John was a Distinguished Engineer at Cisco working across a number of verticals including Higher Education, Finance, Retail, Government, and Health Care.

He is an expert in working with groups to identify business needs, and align technology strategies to enable business strategies, building in agility and scalability to allow for future changes. John is experienced in the architecture and design of highly available, secure, network infrastructure and data centers, and has worked on projects worldwide. He has worked in both the business and regulatory environments for the design and deployment of complex IT infrastructures.