Hybrid Systems Administrator — Exchange & Virtualization

Peraton; North Carolina; On-site; USD 110,000 - 140,000; Full time

Job summary

Peraton is seeking a Sr Systems Administrator to support E-Mail systems, virtualization technologies, and Windows Active Directory. The role covers on-prem Exchange, Proofpoint security, and modern DNS-based authentication protocols such as DKIM, SPF, and DMARC.

The position begins with a 6-week orientation onsite in Boston, 5 days per week, followed by a hybrid onsite schedule with a minimum of 3 days per week at the Boston location. The role may revert to full-time onsite at any time.

Qualifications

• Bachelor's degree or equivalent with 5+ years of experience, or 7+ years with an Associate degree, or 9+ years with a high school diploma.
• U.S. Citizenship or Green Card and ability to pass background check.
• Hands-on administration, troubleshooting, patching, and support of MS Exchange, VMware infra and Windows AD.
• Experience with Active Directory, DNS and Windows core services.
• Experience managing private cloud environments and designing highly available virtualized infra with monitoring standards and procedures.
• Knowledge of HPE ProLiant servers and ESXi v8/v9.
• Experience working with vendors and end users on system troubleshooting.
• Ability to automate processes with scripts (PowerShell, Perl, VBS).
• Strong multitasking, communication, analytics, and organizational skills.

Responsibilities

• Monitor health and performance of on-premises Microsoft Exchange environments.
• Keep Exchange up to date with latest supported versions.
• Collaborate with backup teams to test and secure backups and participate in monthly restore tests.
• Manage E-Mail retention and archiving to meet legal requirements.
• Administer Proofpoint and DNS-based E-mail authentication (DKIM, SPF, DMARC).
• Maintain Windows/Active Directory performance and VMware virtualization environment health.
• Recommend and implement changes to improve Exchange performance and resiliency.
• Plan hardware builds to refresh resources and right-size guest machines.
• Architect ESXi-host performance and availability, and ensure alignment with business needs.
• Support after-hours rotations as needed.

Skills

Exchange administration

VMware virtualization

Windows Active Directory

DNS

PowerShell scripting

Vendor coordination

Troubleshooting

Documentation

Networking basics

Automation

Education

Bachelor's degree in IT/CS

Associate degree

High School diploma with 9 years experience

Tools

HPE ProLiant servers

ESXi v8/v9

Proofpoint E-mail security

DKIM SPF DMARC

Job description

Peraton is seeking a Sr Systems Administrator to support E-Mail systems, virtualization technologies, and Windows Active Directory. The role covers on-prem Exchange, Proofpoint security, and modern DNS-based authentication protocols such as DKIM, SPF, and DMARC.

The position begins with a 6-week orientation onsite in Boston, 5 days per week, followed by a hybrid onsite schedule with a minimum of 3 days per week at the Boston location. The role may revert to full-time onsite at any time.