General informationRequisition # R70403
Locations USA-DC-Washington
Posting Date 08/28/2026
Security Clearance Required TS/SCI
Remote Type Onsite
Time Type Full time
Description & Requirements***This is for a future opportunity***
MANTECH seeks a motivated, career and customer-oriented
Information Systems Security Engineer (ISSE) to join our team in
Washington, D.C. This is an
onsite position.
Responsibilities include, but are not limited to:- Identify information protection needs for an IS and Network Environment. Define IS and Network Environment security requirements in accordance with applicable cybersecurity requirements
- Design security architectures for use within the IS and Network Environment. Design and develop cybersecurity-enabled products for use within an IS and Network Environment
- Integrate and/or implement security with Cross Domain Solutions (CDS) for use within an IS and Network Environment
- Develop and implement security designs for new or existing network system(s). Ensure that the design of hardware, operating systems, and software applications adequately address cybersecurity requirements for the IS and Network Environment
- Design, develop, and implement network security measures that provide confidentiality, integrity, availability, authentication, and non-repudiation. Design, develop, and implement specific cybersecurity countermeasures for the IS and Network Environment
- Develop interface specifications for the IS and Network Environment. Develop approaches to mitigate IS and Network Environment vulnerabilities and recommend changes to network or network system components as needed
- Ensure that network system(s) designs support the incorporation of FBI directed cybersecurity vulnerability solutions
Minimum Qualifications:- Must meet one of the following levels of experience: A high school diploma/GED and 14 + years' experience, an Associate's degree and 7 + years' experience, a Bachelors degree and 5 + years' experience, or a Master's and 3 + years' experience.
- Possessing one or more relevant industry certifications, such as SecurityX / CASP+, CCISO, CGRC/CAP, CISA, CISM, CISSO, CISSP, CISSP-ISSEP, Cloud+, CySA+, FITSP-A, GCSA, GSEC, GSLC, GSNA, PenTest+, Security+, CCNP Enterprise, GMON, CCSP, CISSP-ISSAP, CSSLP, FITSP-D, GCIA, GDSA, or GICSP.
- Familiarity with the use and operation of security tools including: Tenable Nessus and/or Security Center, IBM Guardium, HP WeblInspect, Network Mapper (NMAP), and/or similar applications.
- Working knowledge of the National Institute of Standards and Technology (NIST) Risk Management Framework (RMF) and ATO processes.
Preferred Qualifications:- Bachelor's or Master's Degree in Computer Science, Cybersecurity, or other cyber discipline.
Security Clearance Requirements: - Must have a current/active TS/SCI.
- Selected candidate must be willing to undergo a 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, office machinery, etc.
- Constantly operates a computer and other office productivity machinery, such as a calculator, copy machine and computer printer
- Often positions self to maintain computers in the lab, including under the desks and in the server closet
- Frequently communicates with co-workers, management and customers, which may involve delivering presentations. Must be able to exchange accurate information in these situations
The projected compensation range for this position is $91,600.00-$153,800.00. 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.
