Blue teamer being encouraged to apply for a pentester job, how should I prep?

So I have about twenty years in IT, fifteen as a senior engineer and the last seven in infosec. All my infosec time has been either on enterprise blue team tools (IDS/IPS, SSL decrypter, WAF, CASB etc.) or in threat hunting and DFIR (SIEM, SOAR, EDR, etc.).

Recently a recruiter I've been working with encouraged me to apply for a red team job as a pentester. I guess for this particular job they made a list of certs they thought …

blue cybersecurity job pentester prep