Cybersecurity Engineer Sr Principal

Public Trust: None

Requisition Type: Regular

Your Impact

Own your opportunity to be at the center of GDIT’s business operations. Make an impact by collaborating across functions to make mission success achievable.

Job Description

Apply your expertise to advance the mission and strengthen our enterprise security posture as a Cybersecurity Engineer Sr Principal. Here, you’ll help design and optimize identity foundations across Microsoft Entra ID (Azure AD), hybrid identity services, and modern authentication technologies.

You’ll architect and drive modern authentication and identity engineering solutions, ensuring today is secure and tomorrow is smarter—driving robust, scalable, and compliant access experiences across the enterprise.

HOW YOU WILL MAKE AN IMPACT :

• Partner with senior leadership, cloud architects, and cybersecurity teams to design secure identity and authentication controls across Microsoft 365, Azure, and hybrid environments—balancing innovation, resilience, and compliance.

• Engineer, implement, and manage Microsoft Entra ID authentication solutions including Conditional Access, MFA, passwordless strategies, identity protections, authentication strength policies, and Zero Trust–aligned guardrails.

• Oversee complex authentication and federation integrations including SAML, OAuth/OIDC, Entra ID Application Proxy, certificate-based auth, header-based auth, and legacy protocol reductions or retirements.

• Lead modernization efforts including consolidation of authentication methods, migration from legacy identity providers, and the implementation of modern, cloud-native identity protections.

• Drive automation of identity lifecycle and authentication management using PowerShell, Graph API, and cloud automation platforms.

• Support compliance, audit readiness, and governance reviews via automated reporting, monitoring dashboards, and robust operational documentation.

• Troubleshoot identity, MFA, SSO, and application access issues across hybrid AD, Entra ID, and federated authentication platforms—partnering with security operations, service owners, and application teams.

• Serve as a subject-matter expert in authentication security, risk reduction, hardening, and alignment with enterprise and regulatory frameworks (Zero Trust, NIST, DoW, ITAR, etc.).

• Education: Bachelor's Degree or 4 years of additional experience

• 10+ years engineering Microsoft Entra ID (Azure AD) identity and authentication services

• Required Experience: Expertise with Conditional Access, modern authentication methods (MFA, passwordless, FIDO2, Windows Hello for Business, device-based auth)

• Required Technical Skills: Identity Access Management (IAM), Identity Governance (IG), Privileged Access Management (PAM), Zero Trust Architecture (ZTA)

• Required Skills and Abilities: Automation using PowerShell, Microsoft Graph, or API-based workflows. Microsoft Entra ID Administration, Active Directory Integration

• Preferred Skills: Experience designing or supporting federated authentication (SAML, OAuth/OIDC, WS-Fed). Deep troubleshooting skills across hybrid identity stacks (Entra ID, AD, ADFS, Entra Connect.) Understanding of Zero Trust principles and cloud authentication security baselines. Familiarity with Okta as an IDP. Relevant certifications preferred (MS-100/102, AZ-305, SC-300)

• Location: Hybrid

GDIT IS YOUR PLACE:
● Full-flex work week to own your priorities at work and at home
● 401K with company match
● Comprehensive health and wellness packages
● Internal mobility team dedicated to helping you own your career
● Professional growth opportunities including paid education and certifications
● Cutting-edge technology you can learn from
● Rest and recharge with paid vacation and holidays

Work Requirements

Years of Experience

10 + years of related experience

* may vary based on technical training, certification(s), or degree

Certification

Travel Required

Less than 10%