My RHCE (in RHEL3) has now expired. I am an Oracle PL/SQL Developer Certified Associate though. I like Perl, Groovy, C# PostgreSQL, Oracle. and lots more.
It pains me to use a PHP/MariaDB app for my website, but standing on the shoulder of giants/not reinventing the wheel is a good thing™. And no-one ever visits so scalability isn’t an issue.