Stellent IT LLCVerified Source

Sr. Systems Engineer, Email Security Migration

Onsite · Washington, District of Columbia
Posted August 13, 2026
payroll

Overview

You will lead the migration from on-premises IronPort appliances to Proofpoint cloud email security. You will own the technical design and execution, ensuring a seamless transition with zero email downtime. You will work onsite in Washington, DC alongside a small technical team, reporting directly to the IT director. This contract role focuses exclusively on the Proofpoint rollout, from firewall rule setup to final cutover.

What You'll Do7

  • 1Design the migration path from IronPort to Proofpoint, documenting architecture and cutover plans.
  • 2Configure Proofpoint email security policies, including mail flow, spam filtering, and data loss prevention.
  • 3Set up Proofpoint firewall rules and network changes to support cloud traffic.
  • 4Execute the migration during off-peak hours, monitoring email flow for issues.
  • 5Troubleshoot email delivery problems post-migration, working with Proofpoint support as needed.
  • 6Deliver a handoff document to the operations team, covering day-to-day administration.
  • 7Drive the project to completion within the 6-month contract window.

Requirements7

  • 15+ years in systems engineering with a focus on email security.
  • 2Expert-level experience designing and configuring Proofpoint as an enterprise service.
  • 3Hands-on experience migrating from IronPort or similar on-premises email gateways.
  • 4Proficiency in setting firewall rules for cloud-based email security.
  • 5Deep understanding of SMTP, DNS, and email authentication (SPF, DKIM, DMARC).
  • 6Strong troubleshooting skills in high-availability email environments.
  • 7Ability to work onsite in Washington, DC (local only).

Salary Insight

Salary not disclosed in listing

Location

Typeonsite
LocationWashington, District of Columbia

Required Skills

proofpointironportsmtpdnsfirewall
Share:

Similar open positions

Explore active roles that match your skills and interests.

System One

System One

20h agoWashington, District of Columbiacontract

Sr. System Engineer, Email Security (Proofpoint Migration)

You will own the migration of on-premises IronPort appliances to Proofpoint cloud email security for a federal agency in Washington, DC. You will design, configure, and maintain the Proofpoint environment while ensuring zero disruption to email services. Collaborating with a small team, you'll focus exclusively on this 4-month contract. This role stands out for its concentrated scope and direct impact on a high-stakes federal migration.

Competitive salary
ironportproofpointsmtp+2 more
Radiant System, Inc

Radiant System, Inc

20h agoWashington, District of Columbiacontract

Senior Proofpoint Engineer, Email Security Migration

You will own the migration of email security from on-premises IronPort appliances to Proofpoint cloud, serving a large enterprise with minimal disruption. You will configure Proofpoint firewall rules, manage block and allow lists, and respond to quarantine and release requests. Joining a security operations team, you will collaborate with IT and network engineers to ensure a smooth transition. This contract role in Washington, DC stands out for its focus on a high-impact migration project.

Competitive salary
proofpointironportsmtp+2 more
RADGOV INC

RADGOV INC

20h agoWashington, District of Columbiacontract

Proofpoint Engineer, Email Security & MTA Migration

You will lead the migration from on-premises IronPort to Proofpoint cloud email security, owning the transition for a large enterprise. You'll design, configure, and maintain Proofpoint as a service, handling firewall rules, block lists, and quarantine operations. Your expertise in MTA and Proofpoint Messaging Security Gateway will ensure seamless email flow with minimal disruption. This contract role in Washington DC offers the chance to drive a critical security infrastructure project from day one.

Competitive salary
proofpointironportmta+2 more
Trail Blazer Consulting LLC

Trail Blazer Consulting LLC

13h agoWashington, District of Columbiacontract

Senior Systems Engineer, Proofpoint & Linux

Lead the migration from on-premises IronPort appliances to Proofpoint cloud-based email security, owning the full lifecycle in a DMV-area enterprise. Manage Proofpoint Messaging Security Gateway 8.x, firewall rules, and block/quarantine operations across hybrid environments. Work hands-on with Linux and VMware while collaborating with security and infrastructure teams. This contract role requires onsite presence in Washington, DC, with a clear focus on email security modernization.

70K–75K
proofpointlinuxvmware+2 more
Apex Systems

Apex Systems

20h agoPittsburgh, Pennsylvaniapayroll

Email Migration Engineer, Enterprise Messaging

Email Migration Engineer on a large-scale enterprise messaging and collaboration transformation program. Drive migration of mailboxes from legacy systems to Microsoft 365 and Exchange Online. Lead the technical execution, from assessment to automation, and work with a dynamic team of engineers. This contract role offers a hybrid schedule and a chance to shape a critical infrastructure change.

135K
exchange onlinemicrosoft 365powershell+2 more
Simple Solutions

Simple Solutions

1d agoRaleigh, North Carolinacontract

Lead Deployment Engineer Simple Solutions Raleigh North Carolina Contract

You will own the migration of enterprise security infrastructure from Check Point to Fortinet technologies across a large-scale global environment. This role leads multi-squad network transformation initiatives while providing technical leadership and mentoring engineering teams.

65K–75K
Check PointFortinetFirewall+3 more