From subways to airports,  we’re a WBE/DBE firm that keeps millions of people connected, safe, and on time. With over 250 major public infrastructure projects completed — including for the NYC Transit Authority, Long Island Railroad, NJ Transit, and Amtrak — MKJ has earned its reputation as the trusted name in transit communications and systems integration.
Our team brings more than 150 years of combined engineering experience to every project, uniting precision, innovation, and a problem-solving mindset. Whether we’re modernizing legacy infrastructure or designing next-generation systems from the ground up, MKJ ensures seamless integration and lasting performance — delivered on time and on budget.
As cities evolve, so do we. MKJ has expanded its reach to include healthcare facilities, commercial properties, and educational institutions, where reliable, future-ready communication systems are mission-critical. Our in-house fabrication and diagnostic testing facility allows us to build, test, and fine-tune every component before it ever hits the field — guaranteeing quality and reliability at scale.
Backed by 24-hour on-call service, MKJ partners with clients long after project completion, ensuring systems continue to perform at peak capacity.
At MKJ, we don’t just install systems — we connect people, safeguard infrastructure, and keep the city running.

“MKJs team of designers and integrators have done a fantastic job throughout  the LGA central terminal b replacement project. MkKJ overcame every challenge and delivered a world class public address system to a world class terminal building- on time and on budget.”

Ted Jadermark, Project Director Airport System
Skanska Walsh / Design - Build Joint Venture

“We have had the pleasure of working with MKJ for over 10 years. They are one of the best service providers we work with, attentive  to project needs, timely, professional and a pleasure to do business with.”

Jay Lender, VP and General Manager
Transit Group / EJ

MKJ COMMUNICATIONS

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