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Peter Mascheroni
Senior Solutions Engineer specializing in Microsoft 365, cloud migration, and enterprise automation
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Security-focused engineering leader working with an MSP and internal teams to tighten tenant security (least privilege/global admin reduction, conditional access, MFA) while maintaining operational responsiveness. Has implemented and operated Rapid7, Expel, Microsoft Defender/Entra, and Cisco Umbrella, and led a challenging Microsoft Copilot rollout integrating SharePoint and Salesforce with strong Jira/KB/postmortem practices.
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Key Strengths
- Led least-privilege rollout by revoking global admin and implementing approval-based privileged access while balancing incident response needs
- Improved security posture via conditional access policies (geo restrictions) and stronger authentication controls (MFA/password policies)
- Implemented and tuned vuln management and security automation tooling (Rapid7 agent rollout; Expel automation with Defender) to reduce alert noise and improve response
- Troubleshot complex Copilot integrations across SharePoint and Salesforce using logs/metrics to identify root cause (incorrect user data mapping)
- Strong operational documentation habits: Jira tracking, knowledge base articles, and postmortems to scale troubleshooting across teams
- Manages multiple concurrent onboardings using structured phases (discovery → setup → validation → go-live), sprint-based execution, and P1 triage
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