**ManTech** seeks a motivated, career and customer-oriented **Cybersecurity Engineer** to join our team in **Philadelphia, PA** . This is an **onsite** position. **Responsibilities include but are not limited to:** + Lead the development and update of incident response plans for Navy Operational Technology (OT) systems and lead a team of ISSMs/ISSEs in providing cybersecurity evaluations and risk assessments. Develop plans, instructions, guidance, and standard operating procedures to support the security of OT systems. + Evaluate and prioritize vulnerabilities in OT systems for hardening, patching, or other corrective actions. Lead remediation activities for cybersecurity incidents, including forensic activities to document the scope of the incident and system remediation activities to close the incident. Write after action reviews. + Evaluate public and non-public incident data to identify potential vulnerabilities in specified systems. Develop and implement corrective actions to reduce or eliminate identified risks. + Manage changes to network or system access control lists on specialized cybersecurity applications and systems. Responsible for updating the rules and custom content of specialized cybersecurity applications and systems. + Troubleshoot cybersecurity systems hardware and software when issues occur. Test and evaluate new cybersecurity applications or tools, rules, access controls, and configurations of cybersecurity platforms. + Develop solutions to implement Defense in Depth principles and practices. Identify potential conflicts with the implementation of any cybersecurity tools within the enterprise and develop recommendations to remediate these conflicts. Support enterprise mitigation efforts based on the specific monitoring and filtering capabilities of existing cybersecurity infrastructure. + Analyze life-cycle configuration management of applications, rules, filters, and configurations of managed cybersecurity systems. Provide subject matter expertise in the creation, editing, and management of rules and filters for specialized cybersecurity systems including but not limited to network and host-based IDS, IPS, firewall, web application firewall, proxy, and SIEM systems. Contribute to the completion of milestones associated with specific projects, provide solutions to a variety of technical problems of moderate scope and complexity, advise on cybersecurity risk management, and lead projects with notable risk and complexity, developing the strategy for project execution. **Minimum Qualifications:** + Master’s level degree in Cybersecurity, Computer, Electrical, or Electronics Engineering or Mathematics with field of concentration in computer science, or a Cybersecurity related degree from an ABET accredited program. + 10+ years of professional experience in cybersecurity engineering and experience leading incident response teams. + 5+ or more years of professional experience with ICS infrastructure, networks, and/or network security. + 2+ years of experience with IT infrastructure, networks, and/or network security. + 1+ experience using vulnerability analysis tools and experience applying and/or using and/or analyzing cybersecurity controls such as intrusion detection systems, intrusion prevention systems, firewall configurations, and access control lists. + 1+ years of experience maintaining and configuring various operating systems such as Windows, Linux, VxWorks, or other Embedded Operating Systems. + Offensive Security Certified (OSCP) or Certified Ethical Hacker (CEH), Certified Computer Security Incident Handler or GIAC Certified Incident Handler (GCIH) + DoD 8140/8570 IAT Level II Certification (CCNA-Security, CySA+, CND, Security+ CE) **Clearance Requirements:** + The ability to obtain and maintain an interim Secret clearance is required prior to starting this position. **Physical Requirements:** + Must be able to remain in a stationary position 50%. + Needs to occasionally move about inside the office to access file cabinets, office machinery, etc. + Frequently communicates with co-workers, management, and customers, which may involve delivering presentations. + Must be able to exchange accurate information in these situations. ManTech International Corporation, as well as its subsidiaries proactively fulfills its role as an equal opportunity employer. We do not discriminate against any employee or applicant for employment. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, or status as a protected veteran. If you are a qualified individual with a disability and require a reasonable accommodation to apply for a position with ManTech through its online applicant system, please email us at careers@mantech.com and provide your name and contact information.