Our Team

Experts at Service

The IST management team brings over 100 years combined years of IT and security expertise to your organization. We’ve successfully managed large integrated security and Information Technology projects throughout the United States and the world. Following are bios for our key management personnel:

Alexander W. Oppenhimer – CEO

Alexander Oppenhimer has over 25 years of technical and management experience in network engineering, systems administration and project and security program management. He serves as a primary and essential technical point of contact for IST customers, working closely with network and systems engineers to ensure successful project outcomes. He is responsible for developing project plans, coordinating status meetings and managing engineering resources to deliver the maximum ROI for IST clients. In addition to a B.A. from the University of Virginia, Oppenhimer holds numerous technical certifications in advanced security hardware and information technology software systems.

Jon A. Langhorst, PSP – President

Jon Langhorst sets the standard for excellence at IST as its President, bringing several decades of experience in every aspect of the security industry to bear on the company’s growth and development. For almost 40 years, Langhorst has been managing large, complex and sensitive projects for organizations within and outside the public sector. His expertise in the design and engineering of integrated security systems, technical project management experience, and intimate knowledge of the most advanced video, intrusion and access control systems, as well as physical construction requirements, gives Jon the insight required to successfully guide IST and its clients into the future.

Michael Margolis – COO

Michael Margolis leads IST’s engineering group supporting IST's products and services, including system design, IP network design and cyber security. He has headed IST engineering since 1997. Throughout his extensive career in security and computing, Margolis has been involved with networking, cyber security, high availability and scalability of IP based systems. He has solid experience with scalable IP video systems, FIPS compliant access control, intrusion systems, compound design and countermeasures. Margolis leads research and development efforts for new technologies developed by IST and its subsidiaries. He holds a bachelor’s degree in Computer Science from The George Washington University School of Engineering.

Michael S. Ruddo – Chief Strategy Officer

Michael Ruddo brings IST clients a unique combination of industrial security, procurement and contract negotiation expertise developed over the course of his 30+ years of experience designing, engineering and implementing security management systems. He is responsible for managing the strategic vision and the brand of the company, including developing and building relationships with the industry’s leading manufacturers of security and IT products, ensuring IST clients have access to the most advanced solutions and services to meet their needs at preferred pricing levels. He is also responsible for negotiation and management of our various Contract Vehicles. Ruddo has been a member of the IST team since 2005.

TaChung Chang – Vice President and Senior Systems Engineer

With nearly 20 years of experience in database design, administration and application development, TaChung Chang brings IST clients exceptional engineering and integration expertise to meet their security needs. His skills cover platforms including UNIX, LINUX, Solaris and MS Windows, and his certifications include Certified Netware Engineer (3.x/4.x); Certified Lotus Notes Application Developer (4.x); Microsoft Certified Systems Engineer (4.x) and Cisco Certified Network Associate. Chang earned his M.S. in Computer Science at the State University of New York in New Paltz, NY.

Robert Carson – Vice President, Network Operations

Robert Carson's broad-ranging computer and network engineering expertise was built over the course of more than twenty years working in diverse technical and enterprise environments. His areas of specialty include large-scale directory service implementations and server consolidation using virtualization. Carson holds a Master's degree in Nuclear Engineering from Georgia Institute of Technology.
Contract Vehicles
Certifications