> The maintenance of operational systems is done by software engineering teams, rather than traditional sysadmin types, but the hiring requirements for software engineering skills for the SRE are slightly lower than the requirements for the Software Engineering position.
but from
https://www.youtube.com/watch?v=H4vMcD7zKM0&feature=youtu.be...
"All of SREs have to pass a full software interview to get hired"