Lyndon Marshall has worked in a wide variety of technical areas. He has been a software engineer, a systems analyst, a project manager, a network administrator, a network engineer, a market research analyst, and a professor of Computer Science. For many years, he taught Computer Science at the University of Providence where he taught subjects such as computer programming, systems analysis, database systems, computer architecture and organization, and computer security. His courses in Computer Security included Principles of Computer Security, Computer Forensics, and Penetration Testing. Currently, he is teaching programming, database systems, and neural networks as part of the Applied Mathematics program at the University of Providence.