High-tech Telecom, Wireless, IT, Cloud, Intellectual Property Consultancy in the heart of Wall Street

Leadership and Key Staff

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 development, program management, procurement and contract administration budgeting, scheduling, QA, technology operational and strategic planning.  Read more

    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- and video networks for global Best-In-Class carriers and financial companies.  Previous roles in the past two decades have included Chief Technology Officer at Secure Enterprise Systems Engineering a technology assessment and enterprise cybersecurity firm he launched in the recent past; General Manager and Director of Ground Systems Engineering at SES, the world’s second largest satellite services provider; Director of Network Architecture at Capital One Financial, Chief Technology Officer at InfoPort Communication Group, and Vice President of Packet Services at Teleport Communications Group (TCG) (eventually acquired by AT&T.)Read more

      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 experienced technical project manager.  He has designed and deployed large-scale Networks for over thirty –five (35) years supporting multiple missions –critical applications including Financial services, security and telemetry.  Read more


      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 the design, engineering and implementation management of Technology infrastructure including distribution cabling (inside and outside plant), design of data centers, IDF, and MDF rooms as well as digital video surveillance, access control systems and various AV systems for corporate and institutional clients.  Mr. Bieyro is a BICSI Registered Communications Distribution Designer (RCDD).


      Jim Gleason

      Director Business Development

      Jim Gleason is a seasoned professional with a rich background in sales, marketing and business development.  Jim is responsible for new business and market developmentJim enjoys a successful and proven track record of providing innovative technology solutions to customers across multiple mission critical industries such as Global Financial Services, Public Sector (including; State and Local Government, Federal, Health Care and Higher Ed) as well as major publishing industries.  Jim has over 20+ years of experience providing business and management consulting services encompassing leading edge technological innovation.

        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 over ongoing DVI projects from budget and schedule perspective to satisfy client objectives.  He continues to serve as technical reviewer of many DVI client engagements.



          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 systems for Data Centers and Command Centers and Communication Rooms including cable tray, power, cooling, room layouts, access flooring, lighting and furnishings; Backbone Cabling Systems (twisted pair, Fiber Optic [SMFO/MMFO] and Coax]); Carrier Service Entry Facilities; Outside Cable plant (Buried trench, Duct bank, Aerial runs); and Cable Management Systems. Over the course of her career, Ms. Tubman has supported numerous clients in the transportation, financial services, media and government sectors. She has a BS in Mechanical Engineering from the Lvov Polytechnic Institute, Ukraine. Ms. Tubman has professional associations with the Building Industry Consulting Service International (BICSI).

            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 has participated as a core team member in the planning, design, MEP coordination and construction project management for over 1,000,000 sq. ft. of data center and/or technology space. Mr. Trapini has thirty-five (35+) years of experience designing and directing major telecommunications projects including voice/data network design/implementation, F/O infrastructure design (both inside & outside plant) and implementation, commercial A/V systems design & implementation project management, security & Class E (Fire) implementation coordination, data center & technology equipment room layout/design/integration & MEP engineering coordination and data center migration/relocation project management. Previous affiliations included Canon Americas, Bank Of America, Wachovia Bank, Siemens Transportation Systems, and Salomon Brothers among others. Mr. Trapini has a B.S., Electrical & Mechanical Engineering from the Fairleigh Dickinson University, Teaneck, NJ

              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 DVI clients. Mr. Chang has also deployed, managed, operated and maintained complete IT infrastructure for small and medium DVI clients. He also performed applications software development and telecommunications systems analysis. Mr. Chang has conducted network traffic and performance studies on both data and voice networks, and has developed telecommunications and database applications. Mr. Chang has also implemented Firewall/VPN (site-to-site hub-and-spoke) for many clients, with link redundancy, multi-homing, traffic load-balancing, and high availability solutions. He also implemented Ethernet three-layered hierarchical switched networks, Wi-Fi networks, Site-to-Site disaster recovery and business continuity backup solution, Symantec Protection Suite Enterprise Edition (on physical appliances and VMware platform), Barracuda Networks products, other security software, and hosted security solutions for SMTP filtering security, web contents security, Anti-Spyware solutions for customers. Mr. Chang received his M.S. degree in Computer Science from the New Jersey Institute of Technology.

                John G. Puma

                Senior Project Manager and Energy Practice Consultant

                Mr. Puma has supported Management Consulting and New Business Development by incubating, building and funding Start-up Companies in various industries including but not limited to Renewable Energy, Energy Efficiency and Conservation, Emerging Technologies, Real Estate. He is conversant in strategic planning, business and product development, start-up operations, marketing and national roll-out of new products, systems and services. As the head of our Energy practice, Mr. Puma focuses on Renewable Energy, Energy Efficiency and Conservation, Emerging Technologies. In conjunction with data centers, Mr. Puma secures grant funding and other financing for clients who deploy energy efficient systems financing Mr. Puma has strong background in management of finance, budgeting, operations, and legal matters.  



                Other Staff

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