PKI System Administrator

Unleash Your Potential

At Leidos, we deliver innovative solutions through the efforts of our diverse and talented people who are dedicated to our customer’s success. We empower our teams, contribute to our communities, and operate sustainably. Everything we do is built on a commitment to do the right thing for our customers, our people, and our community. Our Mission, Vision, and Values guide the way we do business.

If this sounds like an environment where you can thrive, keep reading!

The Mission

Leidos is seeking a System Administrator to partner on a large enterprise IT contract for the DOD. The System Administrator will partner and lead operations across multiple geographic locations. The System Administrator provides systems and software operations and maintenance support in a large network enterprise, multi-enclave environment. This individual will work in a team environment to ensure mission needs are met and ensure functionality of capabilities of customers.
This role requires an individual that is technical, customer oriented and familiar with using desktop software applications such as web browsing and client software, and IT Service Management (ITSM) software. This individual should be detail oriented in order to capture customer inquiries appropriately. Role requires excellent oral and written communication skills with experience interacting with walkup customers of all types, to include senior executives. Individuals should be familiar with the basic concepts of Public Key Infrastructure (PKI) utilizing token cards and soft certificates to allow authentication within classified systems and for digital signing/encrypting communications. Administrator will handle walkup customers at the PKI main office, assist remote customers to troubleshoot issues, train Trusted Agents at remote sites/locations to perform basic TA duties, and ensure the PKI servers are operational and maintained. O&M duties include patching, routine maintenance, upgrades, and implementing new PKI technologies developed by the customer’s Engineering division.

Primary Tasks

• Experience with interacting with customers, senior managers, and customers, to handle service inquiries and problems.
• Coordinate with customers and stakeholders to collect data, conduct analysis, develop, and implement solutions associated with incident tickets and requirements.
• Implement, troubleshoot and maintenance of complex PKI, RCVS, OCSP, and other Identity Management tools/systems.
• Enforce security strategies and policies within established guidelines across the O&M IdAM function.
• Design, develop and document solutions to complex active directory and windows technical issues.
• Provide follow-up reports (technical findings, feedback, resolution steps taken) for root cause analysis, engineering technical assessment and process improvement initiatives.
• Mentor junior team members
• Update troubleshooting documentation for 24/7/365 IT Operations Center watch personnel

Basic Qualifications

• Mastery of IdAM technical areas and broad expertise across multiple level systems.
• Experience with RCVS, OCSP, Certificate Authorities and other PKI technologies
• Knowledge of Intelligence Community (IC) systems security standards, concepts and tools to be able to complete technology assignments.
• Experience working independently on technical solutions in support of a client
• Experience with issuing, troubleshooting, and managing token cards to support 2FA for administrator accounts
• Familiarity with troubleshooting soft-certificate issues for customers locally and at remote locations
• Experience with Tier 2 system/server administration
• Experience supporting a broad range of assignments requiring originality and innovation in determining how to accomplish tasks.
• Experience developing methodologies and presenting solutions to team members.
• Experience collaborating with and reviewing the work of team members on requirements and solutions.
• Experience with log reviews, incident analysis, and identification of issue trends
• Experience with utilizing an IT Service Management (ITSM) tool, such as Service Now, to track, manage, and resolve customer incidents and complete customer requests
• Strong oral and written communications skills
• Ability to work independently

Education:

• Bachelor’s degree and 4+ years of prior relevant experience, Master’s degree with 2 years, Associate's with 6 years, or High School Diploma with 8 years or High School Diploma with 8 years of related experience.

Clearance:

• Due to the nature of the government contracts we support, US Citizenship is required.
• TS/SCI with Poly required for Position or TS/SCI and willingness to obtain and maintain a poly.

Certifications:

• Candidate must, at a minimum, meet DoDM 8140.03 (previously DoD 8570) – IT System Admin Intermediate certification requirements (Cloud+, GICSP, SSCP, Security+ CE, GSEC, or higher). Specific “or higher” certifications for systems administrators include FITSP-O, GFACT, CASP+, CCNP Security, or CCSP.

If you're looking for comfort, keep scrolling. At Leidos, we outthink, outbuild, and outpace the status quo — because the mission demands it. We're not hiring followers. We're recruiting the ones who disrupt, provoke, and refuse to fail. Step 10 is ancient history. We're already at step 30 — and moving faster than anyone else dares.

Original Posting:

June 1, 2026

Pay Range:

Pay Range $73,450.00 - $132,775.00

The Leidos pay range for this job level is a general guideline only and not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law.