Information Systems Security Engineer

General Information

Requisition # R63739 Locations USA-MD-Annapolis Junction Posting Date 10/10/2025 Security Clearance Required TS/SCI 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, we’ve 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 Information Systems Security Engineer (ISSE) to join our team in the Annapolis Junction, MD.

Responsibilities include but are not limited to:

• Participate as a security engineer representative on teams for the design, development, implementation and/or integration of secure networking, computing, implementation and/or integration of Information Assurance (IA) architectures, systems, or system components and enclave environments
• Develop and maintain system security certification and accreditation services for our Information Technology (IT) systems in accordance with contractual requirements
• Advise on vulnerability management, conduct robust scanning practices, and implement mitigations, review and evaluate complex customer security issues and implement corrective actions as needed
• Interface with customers and vendors to resolve security problems and provide information on containment or resolution, ensure issues and vulnerabilities have been properly identified and solutions will satisfy the customer’s requirements
• Provide oversight and guidance on design, development, and continuous monitoring best practices for information systems
• Apply knowledge of Information Assurance policies, procedures, and workforce structures to design, develop, and implement secure networking, computing, and enclave environments
• Interact with the Intelligence Community (IC) customers and project team members to support the enforcement of secure designs of systems and architectures, support security planning, assessment, risk analysis, and risk management using the Risk Management Framework (RMF)
• Identify overall security requirements for the proper handling and protection of government data, ensure security controls are adequately maintained, and system users adhere to policies

Minimum Qualifications:

• 5+ years’ experience as an ISSE.
• Experience in security solutioning supporting customers in the IC.
• Possess an IAT I or level II baseline certification as defined by DoD 8570.01-M such as A+ or Security +
• Possess strong speaking, writing, and presentation skills, as well as the ability to persuade, inspire and lead through influence

Preferred Qualifications:

• Prior ISSE experience with a Department of Defense (DoD) customer.
• Experience with Splunk dashboards and analyzing data outputs for trends.
• Additional cyber and/or IT certifications such as Certified Information Systems Security Professional (CISSP), Certified Ethical Hacker (CEH), or CompTIA’s Advanced Security Practitioner (CASP).

Clearance Requirements:

• Must have a TS/SCI w/ Poly

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 collaborate with other leaders/teams, use standard office automation equipment, and virtual communication, which may involve delivering presentations

The projected compensation range for this position is $89,800.00-$150,800.00. There are differentiating factors that can impact a final salary/hourly rate, including, but not limited to, Contract Wage Determination, relevant work experience, skills and competencies that align to the specified role, geographic location (For Remote Opportunities), education and certifications as well as Federal Government Contract Labor categories.  In addition, MANTECH invests in its employees beyond just compensation.  MANTECH’s benefits offerings include, dependent upon position, Health Insurance, Life Insurance, Paid Time Off, Holiday Pay, short-term and long-term Disability, Retirement and Savings, Learning and Development opportunities, wellness programs as well as other optional benefit elections.
MANTECH International Corporation 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.