Senior Security Test Engineer with Security Clearance

About the Team

ECS Federal LLC is the federal segment of a $4B global organization with over 10,000 employees. Our nearly 3,500 professionals deliver advanced technology solutions in data and AI, cybersecurity, and enterprise transformation, serving defense, intelligence, and federal civilian agencies. Our work powers mission-critical outcomes, strengthens technology partnerships, and creates meaningful opportunities for our people. We are defined by a commitment to excellence in delivery, a culture of innovation, and an environment where talent can thrive and grow. We value attracting and developing top talent, fostering a culture that is engaging, accountable, and mission-driven.

The War Data Platform (WDP) is a key initiative within the U.S. Department of War's (DoW) AI-First strategy introduced in early 2026. The WDP separates business and financial data from operational warfighting data, aiming to accelerate the deployment of artificial intelligence (AI) on the battlefield. Extending to Unclassified, Secret, and Top Secret environments, the platform supports collaboration between Combatant Commands, Joint Staff directorates, Senior Executive Service leaders, and operational analysts.

About the Role

The Senior Security Test Engineer serves as the principal authority for security test engineering across WDP Core Integration's full software development lifecycle. This role embeds automated security validation, compliance gating, and penetration testing activities directly into DevSecOps pipelines spanning NIPRNet, SIPRNet, and JWICS. As a senior technical leader, you will translate DoW cybersecurity requirements and contract obligations into concrete, measurable test strategies that protect mission-critical software releases and sustain continuous authorization across all WDP enclaves.

You will operate across development, testing, integration, staging, and production environments, designing automated test suites and implementing DevSecOps-aligned strategies that integrate automated gate checks, artifact-lineage verification, and STIG-based compliance validation. Your work involves creating reusable security-testing scripts, performing virtual-machine and container-security validation, and maintaining a security-testing risk register. You will coordinate closely with software engineers, DevSecOps pipeline operators, and cybersecurity teams to reproduce issues, verify corrective actions, and synchronize readiness for sprint and release events.

Note: This position is contingent upon contract award.

Hiring Process

This role is located in the National Capital Region, covering the Pentagon, Falls Church, and Fairfax. Candidates must possess a current Secret security clearance with the ability to obtain and maintain a Top Secret (TS) clearance with Sensitive Compartmented Information (SCI).

Equal Opportunity

ECS Federal LLC is an equal opportunity employer and does not discriminate or allow discrimination on the basis of any characteristic protected by law. All qualified applicants will receive consideration for employment without regard to disability, status as a protected veteran, or any other status protected by applicable federal, state, or local jurisdiction law.