Cybersecurity Engineer Sr Principal

General Dynamics Information Technology•Falls Church, VA

11h•Hybrid

About The Position

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.

Requirements

10+ years engineering Microsoft Entra ID (Azure AD) identity and authentication services
Expertise with Conditional Access, modern authentication methods (MFA, passwordless, FIDO2, Windows Hello for Business, device-based auth)
Identity Access Management (IAM), Identity Governance (IG), Privileged Access Management (PAM), Zero Trust Architecture (ZTA)
Automation using PowerShell, Microsoft Graph, or API-based workflows.
Microsoft Entra ID Administration, Active Directory Integration

Nice To Haves

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)

Responsibilities

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, DoD, ITAR, etc.).

Benefits

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
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
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
short and long-term disability benefits, life, accidental death and dismemberment, personal accident, critical illness and business travel and accident insurance