John Efthimiopoulos

John Efthimiopoulos is a seasoned engineering professional with extensive experience in radio frequency design and system performance, currently serving as a Senior Radio Frequency Design Engineer at Boingo Wireless since March 2022. Previously, John held positions including Systems Performance Engineer at Verizon, Account Manager at CommScope, and RAN Engineer IV at AT&T, developing expertise in in-building cellular antenna systems primarily in New York City and Northern New Jersey. Early career roles include RF Engineer at Pinnacle Wireless, Applications Engineer at Fiber-Span, and Engineering Technician at JDS Uniphase, where John focused on distributed antenna system solutions and supporting design engineers in fiber optic technology. Educational qualifications include an Executive MBA from Wagner College and a Bachelor of Science in Electronics Engineering Technology from DeVry University.