Identity & Access Management Lead - TS/SCI with Polygraph

Type of Requisition: Regular Clearance Level Must Currently Possess: Top Secret SCI + Polygraph Clearance Level Must Be Able to Obtain: Top Secret SCI + Polygraph Public Trust/Other Required: None Job Family: IT Infrastructure and Operations Job Qualifications: Skills: Active Directory (AD), Systems Engineering, Zero Trust Architecture Certifications: None Experience: 5 + years of related experience US Citizenship Required: Yes Job Description: The Identity & Access Management Lead serves as the lead engineer and technical authority for a complex privileged access management ecosystem supporting password vaulting, just‑in‑time administration, and hardened identity operations. This role requires deep expertise in Active Directory engineering, enterprise identity security, and automation, combined with strong leadership capabilities to guide a small team of engineers delivering mission‑critical authentication and access services. The ideal candidate brings extensive experience designing, securing, and modernizing Windows‑based identity platforms across large, multi‑domain environments. They demonstrate exceptional problem‑solving skills, clear communication, and a proven ability to operate independently or collaboratively within cross‑functional teams. Core Responsibilities: Lead Identity Architecture for a privileged access management solution, including password vaulting, JIT access workflows, and Tier‑0 protection aligned to Zero Trust principles. Design, secure, and maintain Windows‑based Active Directory forests and domains, including Group Policy, DNS, DHCP, PKI, MFA and hybrid identity integrations Develop automation and tooling using PowerShell to standardize operations, reduce manual effort, and improve reliability across identity services. Oversee engineering lifecycle delivery—requirements refinement, architecture documentation, installation instructions, deployment plans, and O&M support. Engineer solutions for geographically dispersed environments, hybrid cloud integrations, and automated deployment via configuration management platforms. Harden identity infrastructure to meet STIG, SCAP, and enterprise security compliance requirements. Perform advanced systems engineering, including modeling, simulation, analysis, and architectural enhancements. Plan and direct OS upgrades, directory modernization efforts, and enterprise‑wide identity improvements. Develop technical documentation for new and existing systems, ensuring clarity, repeatability, and operational readiness. Identify, analyze, and resolve complex system issues, including authentication failures, directory inconsistencies, and privileged access anomalies. Provide training and technical guidance to engineers and operational support staff. Serve as a client‑facing liaison, ensuring requirements are met and technical solutions align with mission needs. Maintain current knowledge of identity security, Windows infrastructure, and emerging directory technologies. Manage and mentor a small engineering team, providing leadership, direction, and professional development. Tier 0 & Cloud Identity plane governance: Serves as the primary authority for Tier 0 Access Plane Management across Azure and Microsoft Entra ID. Responsible for designing and enforcing strict identity boundary controls, privileged access management (PAM), and Directory-level security architectures, while overseeing secure application registration and single sign-on (SSO) integrations using SAML 2.0, OpenID Connect (OIDC), and OAuth. Preferred Experience & Technical Strengths Directory Services: Active Directory, Group Policy, LDAP, DNS, ADCS, OCSP, DHCP, DFS, ADFS, Entra ID, hybrid identity Security & Identity: PKI, MFA, privileged access controls, STIG compliance, ACAS, vulnerability mitigation Automation & Systems: PowerShell, Windows Server, SCCM/MCM, SCOM, Splunk, Dynatrace Cloud & Virtualization: Azure, AWS, VMware ESX, Citrix Xen Desktop/App Leadership: Technical leadership, identity operations management, cross‑functional coordination 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 you’ll find endless opportunities to grow alongside colleagues who share your desire to drive operations forward. The likely salary range for this position is $212,500 - $287,500. 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. Scheduled Weekly Hours: 40 Travel Required: None T elecommuting Options: Onsite Work Location: USA VA Chantilly Additional Work Locations: Total Rewards at GDIT: 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 in