I would have to guess a Ph.D. in Cyber Engineering to start off near the Vulnerability Research work. Starting with a higher emphasis on research in cryptography, building tamper resistant systems, maintaining integrity and confidentiality on mobile desktop, server, SCADA and embedded systems.

Then kernel development, in depth work with creating custom applications that deal with TCP and UDP security and analysis, deep dives into the inner working on how various IoT devices work, building autonomous cyber reasoning systems, automated cyber ranges, and or automated policy client/server enforcement systems.