About Us

We are a low voltage structure cabling company that has the skills you need to provide a turnkey solution for your business.

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For more information please download our Capabilities Statement.



NDT offers both new construction and retrofitting configuration of existing data and VoIP networks, integration of telecommunications systems, and support and provisioning for PBX and LAN/WAN. We also accommodate other technical services including professional IT assessments and auditing services.

Management & Support

We support public and private organizations to operate at maximum performance so you remain competitive. Our goal is simple; share our ideas about technology and assist companies overcoming technical obstacles for business. Ultimately demonstrating how NDT can improve your bottom line longterm.

COVID-19 Update

COVID-19 Update


This unfortunate virus has ushered in a time of unprecedented change and uncertainty. NDT’s top priority is protecting the health and well-being of employees and partners while keeping the business running for our customers and supporting the communities we serve.


We have made these changes to protect our technicians, who are the heart of our business.

  • If you are not feeling well, stay home.
  • NDT has revised its guidelines to adhere to local, state, and federal guidelines – we require all technicians to wear a mask and disposable gloves.


Thank you for your patience and understanding as we may work through scheduling challenges in the coming weeks. We know your business may not stop, and we hope to fulfill all requests promptly.

  • Please call and schedule your installation requisition as soon as possible. Please allow us 24 hours to respond.
  • To avoid touch, we submit all requests electronically through phone and email.
  • Please make sure the requested area for our techs is clean as reasonably possible to avoid exposure.


We are always looking to hire those from the community, including veterans. If you know someone skilled in our line of work, we would love to hear from them. We may not be in a position to employ immediately, but as we start to come out of this, there will be opportunities available.

From our family to yours, we hope everyone is sage and taking the steps outlined by local, state, and federal authorities. The health of NDT’s clients, employees, and partners is our PRIMARY concern. If there is anything we can do to make this less burdensome, please contact us.

Thank you,
Joseph Ruffin, CEO

Current Technicians

This is a resource page for our current NDT Field Technicians. Please check this page frequently for updates. If you have any questions please call Dispatch.

Technical jobs require the right tools. All Technicians should show up on time with a plan to execute the task at hand.

Required Gear for all Technicians:

  • Tone generator
  • Butt-set
  • Punch down tool
  • Wire cutters
  • Fish Tape
  • Glow Rods
  • Cordless drill
  • Small hand tools such as screwdrivers
  • Drywall/sheetrock hand saw
  • Laptop (PC)
  • Smart cell phone (with data plan)
  • SBA 8A Certified

Vehicle Accident Form

Capabilities Statement

Have you run into a problem or have a question about a ticket?

Our Location

Network Design Technologies
813 Tatnall Street
Wilmington, DE 19801

Phone: 610.991.2929
Fax: 302.654.5729

Work With Us

We are always looking for partners and skilled technicians. If you are interested in joining our team, contact us for more information.


Connect With Us