ICAM Identity Provider (IdP) Engineer – Enterprise Authentication Services

General Dynamics Information Technology • Falls Church, VA

1d • $170,000 - $230,000 • Remote

About The Position

GDIT has an opportunity for an ICAM Engineer supporting a large line of business that delivers enterprise-scale Identity, Credential, and Access Management (ICAM) capabilities. This role supports the DoD ICAM mission by designing, developing, integrating, and maintaining enterprise Identity Provider (IdP) services that provide secure authentication and federation for more than 4 million enterprise identities across the Department of Defense. This is a fully remote position. The ideal candidate is a senior hands-on identity engineer with expertise in Microsoft Active Directory Federation Services (ADFS), enterprise authentication, federation technologies, and modern identity protocols. This role focuses on delivering highly available authentication services, federation trust management, single sign-on (SSO), multi-factor authentication (MFA), and secure application integration across a large-scale enterprise environment.

Requirements

• Active Secret Clearance at minimum. Interim Secret Clearances are not allowed.
• Bachelor’s Degree in a related technical discipline, or the equivalent combination of education, technical certifications or training, or work experience.
• DoD 8570/8140 IAT Level II certification (Security+ CE or higher)
• Minimum of 8 years of experience supporting Identity and Access Management (IAM), Authentication, Federation, or ICAM solutions within government or regulated environments
• Strong experience designing, implementing, and supporting Microsoft Active Directory Federation Services (ADFS).
• Extensive experience implementing enterprise Identity Provider (IdP) services supporting large user populations.
• Strong understanding of authentication, authorization, federation, and identity assurance concepts
• Experience implementing and troubleshooting SAML 2.0, OAuth 2.0, OpenID Connect (OIDC), WS-Federation, and JWT technologies
• Experience supporting PKI, certificate-based authentication, smart card authentication, and MFA solutions
• Experience integrating applications, APIs, and enterprise services with federation platforms
• Experience with Active Directory, LDAP directories, and enterprise identity repositories
• Experience configuring claims, attribute mappings, policy enforcement, token transformations, and federation workflows
• Experience supporting Linux and/or Windows Server environments
• Experience deploying and supporting enterprise COTS products in secure customer environments
• Experience working in Agile development environments and utilizing associated tools
• Strong written and verbal communication skills
• Self-starter capable of driving complex technical efforts to completion

Nice To Haves

• Experience designing and supporting highly available ADFS farms with Web Application Proxy (WAP), load balancing, and disaster recovery architectures.
• Experience with Microsoft Entra ID (Azure AD), PingFederate, PingAccess, PingDirectory, Okta, Keycloak, or similar enterprise authentication platforms.
• Experience supporting DoD Enterprise ICAM, Federation Hub, or mission partner federation initiatives
• Experience implementing federation solutions for coalition, partner, or cross-organizational environments
• Experience supporting NIST 800-63 Identity Assurance Levels (IAL), Authenticator Assurance Levels (AAL), and Federation Assurance Levels (FAL)
• Experience implementing phishing-resistant authentication technologies and passwordless authentication solutions.
• Experience supporting Zero Trust Architecture and identity-centric security initiatives.
• Familiarity with PowerShell scripting and automation for ADFS administration.
• Experience supporting enterprise monitoring, performance tuning, and capacity planning for authentication services supporting millions of identities.
• Experience with Active Directory Certificate Services (AD CS) and enterprise PKI.
• Familiarity with container technologies such as Docker and Kubernetes.
• Familiarity with DoD PKI, CAC authentication, derived credentials, and certificate lifecycle management.
• Experience supporting highly available, mission-critical enterprise authentication environments.

Responsibilities

• Design, develop, configure, and maintain enterprise Identity Provider (IdP) services supporting over 4 million enterprise identities.
• Engineer, administer, and sustain Microsoft Active Directory Federation Services (ADFS) infrastructure supporting enterprise authentication and federation.
• Configure and maintain federation trust relationships with internal and external Identity Providers (IdPs), Service Providers (SPs), and mission partners.
• Design, implement, and troubleshoot authentication solutions utilizing SAML 2.0, OAuth 2.0, OpenID Connect (OIDC), WS-Federation, and certificate-based authentication.
• Support onboarding and integration of enterprise applications into the authentication and federation ecosystem.
• Develop authentication policies, claims rules, attribute mappings, token issuance policies, and authorization workflows.
• Support enterprise Single Sign-On (SSO), Multi-Factor Authentication (MFA), Conditional Access, and phishing-resistant authentication capabilities.
• Collaborate with cybersecurity, Active Directory, cloud, infrastructure, and application teams to implement secure authentication services.
• Support implementation of Zero Trust Architecture through modern authentication, federation, and identity assurance capabilities.
• Monitor, troubleshoot, and resolve complex authentication, federation, trust, certificate, token, and identity assertion issues.
• Engineer highly available and resilient authentication services supporting mission-critical enterprise applications.
• Develop technical documentation including architecture diagrams, integration guides, SOPs, TTPs, operational procedures, and onboarding documentation.
• Participate in Agile development activities and continuous service improvement initiatives.
• Actively manage technical risks and contribute to enterprise identity modernization efforts.

Benefits

• Comprehensive benefits and wellness packages
• 401K with company match
• Competitive pay
• Paid time off
• Full flex work week
• Variety of medical plan options
• Health Savings Accounts
• Dental plan options
• Vision plan
• Ability to contribute both pre and post-tax dollars to 401(k) up to IRS annual limits
• Variety of paid time off plans, including vacation, sick and personal time, holidays, paid parental, military, bereavement and jury duty leave.
• 15 days of paid leave per calendar year
• 10 paid holidays per year
• Paid Family Leave program (up to 160 hours in a rolling 12 month period)
• Short and long-term disability benefits
• Life insurance
• Accidental death and dismemberment insurance
• Personal accident insurance
• Critical illness insurance
• Business travel and accident insurance

What This Job Offers

• Job Type: Full-time
• Career Level: Senior