Mark Rajcok
Lead Cybersecurity Data Engineer
New Jersey, United States
Summary
👤
Senior🎓
Top SchoolMark Rajcok is a Lead Cybersecurity Data Engineer with 16 years of experience designing and building large-scale data platforms, currently driving security-focused big data initiatives at AT&T. He is a seasoned Big Data architect and developer skilled in Spark, Kubernetes and HP Ezmeral (formerly MapR), with a career that spans roles from distinguished engineering at Avaya and Lucent to long-term technical leadership at AT&T. Mark also teaches Angular on Udemy, blending deep backend data expertise with practical front-end instruction and a focus on RxJS and modern change-detection patterns. Based in New Jersey, he pairs hands-on implementation skills with an architect’s view of secure, scalable systems, and his background includes early database development experience at NAVAIR that informs his pragmatic approach to data engineering.
16 years of coding experience
31 years of employment as a software developer
BE, BE at Stevens Institute of Technology
Stackoverflow
363,717reputation
34.5mreached
1,036answers
36questions
dataframe
top-5%
routes
top-5%
rxjs
top-5%
observable
top-1%
legend
top-5%
angular-ui
top-5%
Github Skills (142)
web-application10
javascript-framework10
javascript10
jquery10
ternary-operator10
ngfor10
ionic10
angular-directives10
observable10
html10
angular10
checkbox10
typescript10
angularjs-directive10
inheritance10
Programming languages (13)
Github contributions (5)
mrajcok/a2c3-app2
Apr 2016 - Jul 2019
Contributions:31 commits, 25 pushes, 1 branch in 3 years 3 months
mrajcok/kindle_clippings
Jan 2011 - Sep 2017
Contributions:2 commits, 1 push in 6 years 8 months
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