Seacord earned a Bachelor's degree in computer science from Rensselaer Polytechnic Institute in December 1983.
He led the Secure Coding Initiative in the CERT Division of Carnegie Mellon University's Software Engineering Institute (SEI) in Pittsburgh, Pennsylvania until 1991, working on the User Interface Project.
[1] He also has worked at the X Consortium in Cambridge, Massachusetts, where he developed and maintained code for the Common Desktop Environment and the X Window System.
Seacord was an adjunct professor in the Carnegie Mellon School of Computer Science and in the Information Networking Institute.
[4] Seacord is on the Advisory Board for the Linux Foundation[5] and convenor for the ISO/IEC JTC1/SC22/WG14 international standardization working group for the C programming language.