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Our people are the key to our and your success.

Our people are the key to our and your success. Together these Senior Professionals with our Project Managers, Subject Matter Experts, design specialists and support personnel bring the necessary skill and experience to solve our clients’ challenges and deliver projects on–time and within budget.




Benedict Occhiogrosso


Mr. Occhiogrosso is a Co-Founder of DVI Communications.  He is a graduate of New York University Polytechnic School of Engineering.  Mr. Occhiogrosso's experience encompasses a diverse suite of technical and managerial disciplines including sales, marketing, business development, team formation, systems...

Daniel Minoli

Principal Consultant

Mr. Minoli is a world-renowned researcher who has published 60 technical books, 300 papers, and made 85 conference presentations. He has many years of technical-hands-on and managerial experience in planning, designing, deploying, and operating secure IP/IPv6-, VoIP, telecom-, wireless-, satellite-...

Andrzej Koltun

Director Network Architecture and Senior Program Manager

As DVI’s Director of Network & Systems Architecture, Mr. Koltun has technical responsibility for many of DVI’s projects, including aspects of: strategic planning, network and system design, and network implementation management.  Mr. Koltun is a Senior level network architect and...

Luis Bieyro

Senior Project Manager & Relocation Practice

Mr. Bieyro a Technology Infrastructure and Physical Security Specialist and has also served as a Project Manager, Telecommunications, Security and AV Design Consultant, Design Analyst and Estimator over the course of his 30+ year career.  Mr. Bieyro is experienced in...

Wen Ning Hsieh, PhD

Executive Vice-President

Dr. Hsieh is a Co-founder and EVP of DVI Communications. He holds a PHD in mathematics from MIT.  Dr. Hsieh is responsible for Corporate Finance and Administration as part of day–to–day executive responsibilities.  Dr. Hsieh also exercises a Quality assurance...

Eric Berry

Director, Sales and Marketing

Eric has over 15 years strategic sales and marketing experience with Telecommunications, Data Centers and Internet technology companies including Equinix, Abovenet and Zayo. He is thoroughly conversant with the gamut of telecom carrier services, co-location, outsourced IT and smart building...



Senior Project Managers and Practice-Heads


Ms. Raisa Tubman

Senior Project Manager

Ms. Tubman is an expert in technology infrastructure and telecommunications distribution systems with over 25 years of industry experience. She specializes in the design, procurement and implementation of complex network infrastructure. Ms. Tubman has hands-on experience with infrastructure and cabling...

Anthony G. Trapini

Senior Project Manager

Anthony Trapini is a senior level, multi-disciplined, telecommunications design engineer and experienced technology project manager. He has functioned as a core-team design engineer and construction project manager for several large, technically challenging projects throughout the NYC tri-state area. Mr. Trapini...

Jeff Chang

IT Systems Practice Head

Jeff Chang is an IT Systems expert with extensive, in-depth knowledge of servers, LAN/WAN networking, VoIP, IP Video Surveillance, and IT security. He has planned, supported and managed major network/server/system rollouts, upgrades and provides on-going support for a number of...

Gregg Gerdau

Director, Strategic Innovation

Gregg is a seasoned entrepreneur, high technology executive and management advisor with significant experience in leadership, financial management and innovation development. He has been a member of C-level executive teams responsible for Organizational Development in technology driven companies worldwide. Gregg...


Other Staff

DVI employs extensive technology- and industry-specific resources to support our broad range of technical initiatives.