PKI Systems Administrator - TS/SCI with Polygraph

Req ID: RQ219454 Type of Requisition: Regular Clearance Level Must Be Able to Obtain: Top Secret SCI + Polygraph Public Trust/Other Required: None Job Family: IT Infrastructure and Operations Skills: Multi-Factor Authentication (MFA),PKI Certificate Management,Public Key Infrastructure,Token Standards Experience: 10 + years of related experience US Citizenship Required: Yes Job Description: PKI SYSTEMS ADMINISTRATOR YOUR IMPACT Own your opportunity to support national defense. Your work will help keep critical operations secure and connected across the global enterprise directly, contributing to a mission that protects our nation every day. CIS is growing, and we invite both our experienced incumbents and new team members to be part of whatu2019s next. Incumbents bring invaluable mission insight, while new talent adds fresh ideas and energy. Together, weu2019ll strengthen continuity and drive the next generation of innovation. MEANINGFUL WORK AND PERSONAL IMPACT As a PKI Systems Administrator supporting CIS, you will ensure integrity, availability, and secure operation of enterprise public key infrastructure services. You will manage certificates, tokens, authentication services, and identity related security functions that underpin access to critical systems across multiple networks and security domains. Your work strengthens identity assurance, protects sensitive environments, and supports secure mission essential operations across a large, distributed enterprise. KEY RESPONSIBILITIES: + Issue, manage, and maintain certificates, tokens, and authentication credentials for users and systems, ensuring adherence to PKI standards and security requirements + Support full lifecycle PKI operations, including issuance, synchronization, renewal, revocation, and troubleshooting of certificates across multiple networks and enclaves + Provide knowledge-based support for customers, Trusted Agents (TAs), and system administrators, advising on authentication, token management, and certificate usage + Maintain PKI infrastructure health by monitoring certificate stores, expiration timelines, CRL validation, and associated authentication systems + Ensure compliance with enterprise multifactor authentication requirements and enforce credentialing policies for both user and nonperson entity (NPE) identities + Support identity related incident response by diagnosing authentication failures, resolving certificate conflicts, and restoring secure access + Maintain required documentation, service procedures, and operational artifacts to support secure and consistent PKI operations WHAT YOUu2019LL NEED TO SUCCEED : + EDUCATION: Bacheloru2019s degree in an IT-related field, or 10+ years of relevant IT experience in lieu of a degree + CERTIFICATION: Meet DoD 8140 Information Assurance Workforce certification requirements (e.g., Security+ CE, etc.) + CLEARANCE: Active TS/SCI clearance with a favorable polygraph + Experience with PKI administration, certificate services, token issuance, or authentication workflows in enterprise or secure environments + Working knowledge of multifactor authentication, identity credential management, and certificate lifecycle processes + Ability to troubleshoot certificate issues across distributed systems, networks, and platforms + Strong customer service, communication, and documentation skills, with the ability to support technical and nontechnical users + Familiarity with identity management tools, CRL validation, and certificate authorities is highly desirable + US citizenship required + LOCATION: Onsite GDIT IS YOUR PLACE At GDIT, the mission is our purpose, and our people are at the center of everything we do. Growth: AI-powered career tool that identifies career steps and learning opportunities Support: An internal mobility team focused on helping you achieve your career goals Rewards: Comprehensive benefits and wellness packages, 401K with company match, and competitive pay and paid time off Community: Award-winning culture of innovation and a military-friendly workplace OWN YOUR OPPORTUNITY Explore an enterprise IT career at GDIT and youu2019ll find endless opportunities to grow alongside colleagues who share your desire to drive operations forward. #CIS The likely salary range for this position is $147,292 - $199,278. This is not, however, a guarantee of compensation or salary. Rather, salary will be set based on experience, geographic location and possibly contractual requirements and could fall outside of this range. Our benefits package for all US-based employees includes a variety of medical plan options, some with Health Savings Accounts, dental plan options, a vision plan, and a 401(k) plan offering the ability to contribute both pre and post-tax dollars up to the IRS annual limits and receive a company match. To encourage work/life balance, GDIT offers employees full flex work weeks where possible and a variety of paid time off plans, including vacation, sick and personal time, holidays, paid parental, military, bereavement and jury duty leave. To ensure our employees are able to protect their income, other offerings such as short and long-term disability benefits, life, accidental death and dismemberment, personal accident, critical illness and business travel and accident insurance are provided or available. We regularly review our Total Rewards package to ensure our offerings are competitive and reflect what our employees have told us they value most. We are GDIT. A global technology and professional services company that delivers consulting, technology and mission services to every major agency across the U.S. government, defense and intelligence community. Our 30,000 experts extract the power of technology to create immediate value and deliver solutions at the edge of innovation. We operate across 50 countries worldwide, offering leading capabilities in digital modernization, AI/ML, Cloud, Cyber and application development. Together with our clients, we strive to create a safer, smarter world by harnessing the power of deep expertise and advanced technology.Join our Talent Community to stay up to date on our career opportunities and events at Opportunity Employer / Individuals with Disabilities / Protected Veterans

Created: 2026-05-11