PKI Systems Administrator — Secure Linux Admin with Clearance

A3T (Agil3 Technology Solutions); Mechanicsburg (Cumberland County); On-site; USD 90,000 - 130,000; Full time

Job summary

A3T is seeking a PKI Systems Administrator to support a federal government agency and its mission partners. You will install, configure, and administer PKI systems, manage certificates, and handle security-related tasks while ensuring compliance and audit readiness.

The role requires a Secret Clearance and hands-on Linux administration experience. You will perform routine backups, maintain access controls, and support ongoing hardware and software upgrades within a security-focused environment.

Qualifications

• Secret Clearance required.
• Minimum three years experience as a system/application administrator in a Linux environment.
• Bachelor's Degree in an IT-related field or 6 years related experience or vendor certification.
• Baseline IAT Level II certification IAW DoD 8570.01-M (Security+ or higher).
• Ability to obtain and maintain a Computing Environment (CE) certification within 6 months of start date.

Responsibilities

• Install and configure PKI systems, performing ongoing administration (change requests, user account management, access control, configuration management, database maintenance, software upgrades, compromise reporting, backups).
• Execute Certificate Registrations (CRs) per PKI PMO with system/config/app installation and upgrades, host/network interface configuration, CRL publication, replication, and backups.
• Set up user accounts and assign security privileges and access controls; delete security audit logs and archive data; manage passwords/PINs and records for HSM operations; maintain access logs for physical security audits.

Skills

PKI

Linux administration

Security clearance

System administration

Education

Bachelor's degree in IT-related field

6 years related experience

Vendor certification (Professional or higher)

Job description

A3T is seeking a PKI Systems Administrator to support a federal government agency and its mission partners. You will install, configure, and administer PKI systems, manage certificates, and handle security-related tasks while ensuring compliance and audit readiness.

The role requires a Secret Clearance and hands-on Linux administration experience. You will perform routine backups, maintain access controls, and support ongoing hardware and software upgrades within a security-focused environment.