**ManTech** is seeking a motivated, career and customer-oriented **Cyber Security Engineer, Senior** to join our team in **Chantilly, VA.** **Responsibilities include, but are not limited to:** + Deploys Enterprise Perimeter Protection solutions with focus in cyber security + Engineers and deploys capabilities to provide new functionality, improve system performance/availability, and for generating efficiencies in the maintenance of the operational environment + Provides Tier 3 maintenance support for deployed technologies + Supports Assessment and Authorization activities related to deployed technologies + Identifies potential conflicts with implementation of deployed technologies within the enterprise and develops recommendations to remediate these conflicts + Contributes to the completion of milestones associated with specific projects + Provides solutions to a variety of complex technical problems + Develop plans to safeguard computer files against unauthorized modification, destruction or disclosure **Minimum Requirements:** + Bachelor's Degree or four (4) years of equivalent of experience + Must have 5 years of relevant work experience + Must have or be willing to obtain IAT Level II certifications within six (6) months of hire + Experience with network defense technologies in the following areas: Firewalls, IDS/IPS and email security + A solid understanding of Windows and Linux systems, general operating system security practices, TCP/IP networking, and network security concepts is required + Excellent verbal and written communication skills are required **Preferred Qualifications:** + Experience with the development, engineering, test, sustainment, and overall O&M activities for a secure government system + Demonstrated experience with F5 and FireEye security products desired + Knowledge with cybersecurity architectural principles such as defense in depth, resilience, and integrated security operations + Ability to apply security principles to the systems and enterprise system designs + Working knowledge of database and operating system security + Knowledge of defensive cyber operations + Understanding of fundamental cloud computing concepts + Experience with Information Assurance concepts and processes + Ability to function in a fast-paced environment and effectively manage multiple tasks simultaneously; coordinating resources and ensuring scheduled goals are met + Ability to make decisions and resolve problems effectively – Seek out information and data to evaluate, prioritize and formulate best solution or practice + Must be able to multi-task, work independently and as part of a team, share workloads, and deal with sudden shifts in project priorities **Clearance Requirement:** + Must possess an active TS/SCI w/ Polygraph **Physical Requirements:** + Must be able to remain in a stationary position 50% + Constantly operates a computer and other office productivity machinery + The person in this position frequently communicates with co-workers, management, and customers, which may involve delivering presentations. Must be able to exchange accurate information in these situations