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# Sr. Systems Engineer

- **Company:** EXPERT RECRUITING SOLUTIONS, LLC
- **Location:** Washington, DC, United States
- **Experience:** Expert
- **Contract:** Temporary to permanent
- **Skills:** Systems Engineering, Cloud Computing, System Configuration, Linux Servers, Firewalls (Computer Science), IronPort, Firewall Services Module, Vmware
- **Published:** November 9, 2026
- **Apply:** https://www.careerbuilder.com/job-details/sr-systems-engineer-washington-dc--b691881f-e487-4f59-9aa4-a5d2ba3df060

## About the Role

Systems Engineering, Email Security, Cloud Computing, IronPort Product/Service Family, Email Technology, Firewalls, MTA, Lead the migration from on-premises IronPort email security appliances to Proofpoint cloud-based email security solution, ensuring seamless transition with minimal disruption to email services.
Expert level experience designing, configuring and maintaining Proofpoint as an enterprise service
Experience in setting Proofpoint firewall rules and maintaining block lists; responding to requests to quarantine or release email
Deep understanding of MTA and Proofpoint Messaging Security Gateway and Proofpoint Messaging Security Gateway 8.x
Experience with Linux Server and VM Ware