Google Workspace Security & Email Deliverability Specialist Needed

We are looking for an experienced Google Workspace and email deliverability specialist to investigate and resolve two urgent issues with our company email system. Issue #1: Possible unauthorized email activity We recently discovered that multiple Google Workspace accounts sent emails that were not created or authorized by our team. Our investigation shows: - Suspicious Gmail activity in Google Workspace logs - Some activity related to API access - Some activity related to web access - Possible OAuth/app authorization involvement We need help determining: - What application or integration caused the activity - Whether any account or third-party app access was compromised - Whether our current integrations are safe - The best security steps to prevent this from happening again Issue #2: Email deliverability problems We are experiencing significant email delivery issues. Symptoms include: - Business emails and interview invitations going to spam or not being received - Poor email response rates - Possible sender reputation issues Our setup: - Google Workspace - Multiple company mailboxes - Third-party email outreach tools connected to some accounts We need a complete audit of: - SPF configuration - DKIM setup and signing - DMARC configuration - Google Workspace security settings - Email authentication - Domain reputation - Blacklist status - Third-party email tool configuration - Overall email sending health We are looking for someone who can: - Investigate the security issue - Identify the root cause - Audit and improve our email infrastructure - Recommend and implement solutions - Help improve long-term email deliverability Please apply only if you have hands-on experience with: - Google Workspace administration - Gmail security investigations - OAuth/app permissions - SPF, DKIM, DMARC - Email deliverability and sender reputation Thank you.