Mark Rajcok

Mark Rajcok is a seasoned big data architect and developer, specializing in technologies such as Spark, Kubernetes, and MapR. Currently serving as a Lead Cybersecurity/Data Engineer at AT&T, they also instruct a course on Angular on Udemy, focusing on its core concepts. Mark's previous roles include Software Architect and Senior Software Engineer at Avaya, as well as various technical positions at AT&T and Lucent Technologies, where they contributed significantly to database development and data engineering. They hold a Bachelor of Engineering and a Master’s degree from the Stevens Institute of Technology.