Antivirus, Best Practices, CCNA - Cisco Certified Network Associate, CISSP - Certified Information Systems Security Professional, Cisco Network Systems, CompTIA Security+, Customer Relations, Data Analysis, Enterprise Protection, Firewalls, GSEC - GIAC Security Essentials Certification, Government Intelligence, Industry Standards, Information Systems Security Engineering (ISSE), Intelligence Agencies, Internet Security, Intrusion Prevention Systems, Linux Operating System, Microsoft Windows Operating System, NMap, Nessus, Network Administration/Management, Network Architecture/Engineering, Network Management Software, Network Operations Center, Office Equipment, People Management, Perl Programming Language, Presentation/Verbal Skills, SSCP - Systems Security Certified Practitioner, Scripting (Scripting Languages), Server Support, Software Development, Sustainability, United States Department of Defense (DoD), Unix Shell Programming, XML (EXtensible Markup Language), tcpdump
General Information
- Requisition: R66762
- Locations: USA-VA-Chantilly
- Posting Date: 03/26/2026
- Security Clearance Required: TSSCI w Poly
- Remote Type: Onsite
- Time Type: Full time
Description & Requirements
Unlock the secrets of intelligence with MANTECH. Join a dynamic team at the forefront of national security providing advanced solutions to government intelligence agencies. Since 1968, weve been solving the toughest challenges with groundbreaking tech. Explore thrilling projects in Digital Transformation, Cybersecurity, IT, Data Analytics, and Software Development. Elevate your career and make a difference. Your adventure begins now-unleash your potential with MANTECH.
MANTECH seeks a motivated, career and customer-oriented Senior Cyber Security Engineer to join our team in Chantilly, VA. You will engineer, design, and sustain Comply-to-Connect (C2C) deployment support to migrate and maintain critical services across unclassified and classified environments.
Responsibilities include but are not limited to:
- Engineering, designing, and implementing C2C deployment support while managing the appliances, servers, and supporting infrastructure.
- Coordinating with the network service provider to develop and maintain comprehensive network architecture diagrams.
- Evaluating and recommending technology upgrades to address performance, standardization, and industry best practices.
- Monitoring and investigating C2C performance and faults to recommend and implement necessary improvements.
- Interacting with team members and customers at multiple levels to gather and coordinate vital technical information.
- Supporting Assessment and Authorization (A&A) activities related to cybersecurity technologies and system accreditation.
Minimum Qualifications
- Bachelors degree or 4 years of additional experience in lieu of a degree.
- 5 years of experience in Information Systems Security and/or Cyber Engineering.
- Experience with technologies involved in large-scale enterprise deployments and/or data center environments.
- Experience deploying enterprise security software products such as firewalls, IPS, Anti-Virus, and/or network management systems.
- Knowledge of Windows and Linux systems.
- IAT Level II, GSEC, Security+, SSCP, or CCNA-Security certification, or the ability to obtain it within 6 months of hire.
Preferred Qualifications
- Certified Information Systems Security Professional (CISSP) certification.
- Experience implementing vendor-agnostic C2C capabilities and services within DoD engineering and sustainment environments.
- Proficiency with Cisco Identity Services Engine (ISE) and tools such as Nmap, Nessus, and tcpdump.
- Knowledge of Shell, Perl, and XML Scripting to automate security tasks.
Clearance Requirements
- An active TSSCI with Polygraph.
Physical Requirements
- Must be able to remain in a stationary position 50%.
- Needs to occasionally move about inside the office to access file cabinets and office machinery.
- Frequently communicates with co-workers, management, and customers, which may involve delivering presentations.
- Must be able to exchange accurate information in these situations.
MANTECH considers all qualified applicants for employment without regard to disability or veteran status or any other status protected under any federal, state, or local law or regulation. If you need a reasonable accommodation to apply for a position with MANTECH, please email us at careers@mantech.com and provide your name and contact information.
M
ManTech International Corp
Our Mission
Our mission is empowering our nation through a diverse and skilled workforce securely delivering innovative technology, consulting services and digital solutions for our customers’ mission success, every day.
Our Vision
Our vision is Securing the Future as the most trusted partner for U.S. Defense, Intelligence and Federal Civilian customers through the power of One ManTech. When these agencies think of an essential partner for their national and homeland security needs, they think ManTech.
Our Values
Our values are grounded in a bedrock of truth, integrity and caring for each other and the mission. We hold steadfast to:
• TRUST – We earn and protect the trust of our customers, employees and investors through an enduring foundation of respect, fairness, credibility and honoring our commitments, always.
• INCLUSION – We are an inclusive, diverse and talented workforce with a passion for mission success, intellectual capital, creativity and integrity. Our high ethical standards and investment in our people build confidence with our customers.
• QUALITY– We deliver exceptional quality to customers through differentiated technology solutions and an uncompromising focus on excellence, value and innovation.
5,000 to 9,999 employees
https://www.mantech.com/about