**MANTECH** seeks a motivated, career and customer-oriented **Principal Cyber Systems Engineer** to join our team in **Chantilly, VA** .

The Principal Cyber Systems Engineer will leverage their strong technical background and knowledge to support complex cybersecurity initiatives by delivering hands-on engineering expertise across a wide range of security technologies. You will help protect vital systems and drive cyber defense innovation in a collaborative, high-impact environment.

**Responsibilities include but are not limited to:**

+ Providing engineering support and system administration for specialized cybersecurity applications and systems—including installation, configuration, maintenance, patching, and backup/restoration
+ Serving as a subject matter expert in the creation, editing, and management of signatures, rules, filters, and custom content for cybersecurity systems such as IDS, IPS, firewalls, web application firewalls, proxy servers, an...