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General information

Requisition #
R54859
Locations
USA-DC-Washington
Posting Date
10/17/2024
Security Clearance Required
Public Trust/Suitability
Remote Type
Onsite
Time Type
Full time

Description & Requirements

Become an integral part of a diverse team while working at an Industry Leading Organization, where our employees come first. At ManTech International, you’ll help protect our national security while working on innovative projects that offer opportunities for advancement.

Currently, ManTech is seeking a motivated, career and customer-oriented Journeyman Network Security Engineer to join our team in the Washington, DC. This position supports a 24/7/365 service center. You will have the option of three different shifts (1st, 2nd, and 3rd).

Responsibilities include but are not limited to:

  • Performs as the highest-level technical expert, providing both internal and external consulting services.
  • Works independently on advanced systems/software analysis projects.
  • Remains current in operating systems/ software analysis and technological developments/applications.
  • Recommends future direction or projects to management.
  • Implement DISA STIGs and secure AWS-based firewalls, proxies, and Cisco and Fortigate firewalls.
  • Utilize security tools such as Tenable, BigFix, SCCM, Cisco ISE, Cisco Prime, Cisco DNA, and FISMA findings to identify and remediate network vulnerabilities.
  • Conduct audits to identify network security gaps and recommend solutions.
  • Contribute to security incident management and response efforts.
  • Secure site to site VPNs.

Basic Qualifications:

  • A bachelor’s degree in Computer Science, Math, Electrical Engineering, or related field.
  • A minimum of two (2) years of related experience.
  • Demonstrated experience working with STIGs, firewalls, proxies, Cisco network devices, vulnerability scanning tools, and FISMA requirements and findings.
  • Demonstrated experience conducting network security audits.
  • Demonstrated experience contributing to network security incident response.

Preferred Qualifications:

  • Proficient with ServiceNow

Clearance Requirements:

  • Must be a U.S. citizen
  • Must be able to obtain a Public Trust

Physical Requirements:

  • Must be able to be in a stationary position more than 50% of the time 
  • Must be able to communicate, converse, and exchange information with peers and senior personnel 
  • Constantly operates a computer and other office productivity machinery, such as a computer 
  • The person in this position frequently communicates with co-workers, management, and customers, which may involve delivering presentations. Must be able to exchange accurate information in these situations 
  • The person in this position needs to occasionally move about inside the office to access file cabinets, office machinery, etc.


The projected compensation range for this position is $79,300.00-$133,100.00. 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 it’s 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, 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.