ICAM Identity Provider (IdP) Engineer – Enterprise Authentication Services

About this role

Type of Requisition: RegularClearance Level Must Currently Possess: SecretClearance Level Must Be Able to Obtain: SecretPublic Trust/Other Required: NoneJob Family: IT Infrastructure and OperationsJob Qualifications: Skills: Active Directory Domain Services (AD DS), Active Directory Federation Services (AD FS), Authentication Systems, Microsoft AzureCertifications: NoneExperience: 8 + years of related experienceUS Citizenship Required: YesJob Description: ICAM Identity Provider (IdP) Engineer – Enterprise Authentication Services 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. MEANINGFUL WORK AND PERSONAL IMPACT 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..

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.

Basic Qualifications:

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)

Required Skills/Knowledge:

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

Desired Skills/Knowledge:

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…