Why Complex?

Complex’s commitment is to provide innovative solutions that meet our clients’ needs and exceed their expectations. We work with our customers to find appropriate security, electrical, structured cabling and fiber optics, as well as fire solutions, and ensure we take the most comprehensive approach on every opportunity and project we embark upon. With vast experience across all fields, we serve the public and private sectors specializing in education, commercial, and industrial applications. We are confident that we can help accomplish your goals by providing the absolute best value for your project regardless of size and complexity.

Complex Security team photo

Security Solutions

Our top priority has been securing facilities with state of the art security systems. We partner with the best equipment manufacturers and software developers to ensure what you want secured stays secure. Complex can engineer, install, monitor and maintain security systems of all sizes. Our greatest asset is the ability to integrate all portions of your security system to ensure 24/7 full functionality, and enabling total facility security at a click of a button.

Line Voltage Solutions

Complex’s electricians offer extensive experience, allowing us to provide a wide array of electrical services for industrial, commercial, solar, and residential environments. Whether you need industrial maintenance, commercial design build, home solar installation, or residential service work, Complex is an email or phone call away. Complex’s trained professionals consisting of multiple Masters, Journeyman, and Apprentices with the highest safety standard and code compliant installations are here to serve.

Structured Cabling & Fiber Optics Solutions

Complex offers full-line solutions including copper, fiber and coaxial cabling systems that help connect and enhance our customers network needs. We apply innovation based on your project’s technical, logistical and physical demands. By utilizing the latest technology with our industry leading partners we specialize in both indoor and outdoor applications. We offer integrated support from the initial design to connectivity and ongoing maintenance.

Complex History

Established in 2014 by colleagues and field veterans, John Kerlin and Charles Stand, Complex has grown from humble beginnings. Located in SE Wisconsin, Complex saw an increased demand for cutting-edge solutions and opened a second location in Madison, WI in 2020. Complex has since grown to over 20 employees and continues serving Wisconsin and Illinois.


Charles Strand


John Kerlin Headshot

John Kerlin


Hamido El-Shafei Headshot

Hamido El-Shafei

VP of Sales

Ryan Hartig


Ryan Bachman Headshot

Ryan Bachmann

Head of Electrical Division

Theron O'Connor Headshot

Theron O’Connor

Head of Structured Cabling Division

Drew Kerlin Headshot

Drew Kerlin

Project Superintendent

Jenny Strand

Executive Assistant

Max Hoffman

Sales Executive

Annie Malinkowski Headshot

Annie Malinowski

Office Support Specialist