ManTech seeks a motivated, career and customer-oriented Principal Cyber Support Developer to join our team in the Chantilly, VA. Responsibilities include but are not limited to: Integrate, tailor, engineer, design, and maintain cybersecurity relevant features & capabilities using well-known windows and cloud vendor capabilities/services/platforms (e.g. Amazon Web Services, MS Azure, Oracle Cloud) or 3rd party vendor cloud products to align & support NIST cybersecurity framework (Identify, Protect, Detect, Respond, Recover) customer mission goals. Apply system security engineering expertise in one or more of the following: system security design process; engineering life cycle; information domain; cross domain solutions; commercial off-the-shelf and government off-the-shelf cryptography; identification, authentication, and authorization; system integration; risk management; intrusion detection; contingency planning; incident handling; configuration control; change management; auditing; certification and accreditation process; principles of IA (confidentiality, integrity, non-repudiation, availability, and access control); and security testing. Overall desire to automate sundry of cybersecurity-related workflows, develop solution patterns with cloud-managed resources & features, implement automated solution(s) where feasible related to Security-Orchestration-Automation-and-Response (SOAR), and deploy & maintain solutions enabling cyber operations monitoring teams. Provide inputs, participate, and assist with architecture design and documentation by using a blend of Agile, ITIL, and/or general waterfall-based delivery framework approaches depending on specific project activity or enterprise security service. Interact with stakeholder, customer, and data consuming team(s) to turn cyber data into action with intelligent analytics and clear insights, define input requirements to support data models, and final outputs for quick analysis and summary reporting for actions. Lead or brief in-depth technical meetings providing subject matter expertise when needed and demonstrate ability to pivot between work assignments in a small (2-3 person), high performance team based on fast-paced customer prioritization needs. Use Linux OS [graphical user interface (GUI) and command line interface (CLI)], preferably experience with Red Hat v8.0. Experience with Windows Server 2016, Windows Server 2019, Active Directory, Server Roles, Access Rights and Security Groups. TCP/IP networking, 802.1x and network security concepts is required. Minimum Qualifications: Bachelor's degree or 4 years of additional software development in lieu of degree 7 years of software development experience Experience with Git, Gitlab, developing with continuous integration-continuous delivery (Cl/CD) pipeline Experience with software programming integrating data protection/encrypt-decrypt capabilities to support data confidentiality and integrity requirements. Experience with installation and administration of COTS applications on RHEL and/or Microsoft Windows Server v2019 & v2022 Experience with scripting in Linux, Bash, PowerShell, Python, or comparable language IAT Level II (GSEC, Security, SSCP, or CCNA-Security) certification Preferred Qualifications: Experience with developing and implementing solutions associated with Microsoft Windows Server and RedHat Enterprise Linux. Experience with cloud technologies (AWS, Azure) and virtualization (VMware, Hyper-V) Strong understanding of networking concepts, including DNS, DHCP, and VPN technologies Experience with Data Integration, Data Engineering and Data Lake implementations using ETL, Big Data and Cloud Technology. Knowledge of Security Information and Event Management (SIEM) software and Container Services like Docker and Kubernetes Clearance Requirements: Must have a current/active TS/SCI w/Polygraph Physical Requirements: The person in this position must be able to remain in a stationary position 50% of the time. Occasionally move about inside the office to access file cabinets, office machinery, or to communicate with co-workers, management, and customers, via email, phone, and or virtual communication, which may involve delivering presentations.