ISSE

Job#: 3051184

Job Description:

Candidates must be U.S. citizens able to obtain and/or maintain a Department of Defense security clearance as a condition and continuation of employment.

Information Systems Security Engineer (ISSE)

Interested candidates should apply directly to [email protected]

Location: Dahlgren, VA - posiiton is hybrid (3 days onsite)

Duration: Anticipated 6 month contract to hire opportunity

Salary: $55-67/hr - weekly pay on W2

Clearance: Qualified candidates should have an active DOD Top Secret clearance

Certifications: IAT II certification is required

Apex Systems is seeking an experienced Information Systems Security Engineer (ISSE) to support mission-critical Department of Defense programs in Dahlgren, VA. This role is responsible for developing, maintaining, and managing Risk Management Framework (RMF) Assessment and Authorization (A&A) packages while ensuring compliance with cybersecurity requirements and federal security standards. The ideal candidate will have experience supporting DoD environments, conducting security assessments, and working with system owners, engineers, and cybersecurity stakeholders throughout the RMF lifecycle.

Responsibilities

• Develop, maintain, and manage RMF Assessment and Authorization (A&A) packages.
• Support the implementation and execution of the NIST Risk Management Framework (RMF) process.
• Conduct security assessments to identify vulnerabilities, risks, and compliance gaps.
• Document assessment findings and provide recommendations for risk mitigation.
• Collaborate with engineers, system administrators, and stakeholders to ensure security controls are properly implemented and maintained.
• Support continuous monitoring activities and security compliance efforts.
• Assist with Interim Authority to Test (IATT) documentation and activities.
• Maintain security documentation, reports, and authorization artifacts.
• Stay current on cybersecurity regulations, emerging threats, and industry best practices.

Required Qualifications

• Bachelors degree in Cybersecurity, Information Technology, Computer Science, Engineering, or a related field, or equivalent experience.
• 3+ years of experience supporting RMF and Assessment & Authorization (A&A) activities.
• Strong knowledge of NIST SP 800-53, NIST SP 800-37, and DoD cybersecurity requirements.
• Experience implementing and testing security controls.
• Experience conducting vulnerability assessments and security reviews.
• Experience with security assessment tools such as Nessus.
• Understanding of DoD cybersecurity compliance processes and system accreditation.
• Knowledge of RDT&E and/or tactical systems environments.
• Strong written and verbal communication skills.
• Ability to work independently and collaboratively within a team environment.

Preferred Qualifications

• Experience with Enterprise Mission Assurance Support Service (eMASS).
• Experience managing DoD or Department of the Navy cybersecurity portfolios.
• Working knowledge of STIG Viewer, Vulnerability Remediation Asset Manager (VRAM), and Compliance Technical Orders (CTOs).
• Experience supporting Interim Authority to Test (IATT) efforts.

Required Certifications & Clearance

• Active Top Secret Security Clearance required.
• DoD 8570/8140 IAT Level II certification required (Security+, CySA+, CCNA Security, GICSP, SSCP, or equivalent).

Why Apex Systems

Apex Systems connects top technology professionals with opportunities supporting critical national security missions. We offer competitive compensation, comprehensive benefits, professional development opportunities, and the chance to work on impactful programs supporting the federal government.

Everforth Apex is a world-class IT services company that serves thousands of clients across the globe. When you join Everforth Apex, you become part of a team that values innovation, collaboration, and continuous learning. We offer quality career resources, training, certifications, development opportunities, and a comprehensive benefits package. Our commitment to excellence is reflected in many awards, including ClearlyRateds Best of Staffing in Talent Satisfaction in the United States and Great Place to Work in the United Kingdom and Mexico.

Everforth Apex uses a virtual recruiter as part of the application process. Click here for more details. By applying for this job, you agree to receive calls, AI-generated calls, text messages, or emails from Everforth Apex and its affiliates, and contracted partners. Frequency varies for text messages. Message and data rates may apply. Carriers are not liable for delayed or undelivered messages. You can reply STOP to cancel and HELP for help. You can access our privacy policy at https://www.apexsystems.com/privacy-policy

Everforth Apex Benefits Overview: Everforth Apex offers a range of supplemental benefits, including medical, dental, vision, life, disability, and other insurance plans that offer an optional layer of financial protection. We offer an ESPP (employee stock purchase program) and a 401K program which allows you to contribute typically within 30 days of starting, with a company match after 12 months of tenure. Everforth Apex also offers a HSA (Health Savings Account on the HDHP plan), a SupportLinc Employee Assistance Program (EAP) with up to 8 free counseling sessions, a corporate discount savings program and other discounts. In terms of professional development, Everforth Apex hosts an on-demand training program, provides access to certification prep and a library of technical and leadership courses/books/seminars once you have 6+ months of tenure, and certification discounts and other perks to associations that include CompTIA and IIBA. Everforth Apex has a dedicated customer service team for our Consultants that can address questions around benefits and other resources, as well as a certified Career Coach. You can access a full list of our benefits, programs, support teams and resources within our 'Welcome Packet' as well, which an Everforth Apex team member can provide.

Everforth Apex Systems is an equal opportunity employer. We do not discriminate or allow discrimination on the basis of race, color, religion, creed, sex (including pregnancy, childbirth, breastfeeding, or related medical conditions), age, sexual orientation, gender identity, national origin, ancestry, citizenship, genetic information, registered domestic partner status, marital status, disability, status as a crime victim, protected veteran status, political affiliation, union membership, or any other characteristic protected by law. Everforth Apex will consider qualified applicants with criminal histories in a manner consistent with the requirements of applicable law.

If you require an accommodation under the Americans with Disabilities Act to participate in an interview with a virtual recruiter or to use our website for a search or application, please contact our Benefits Department at [email protected] or 804-523-8228. Please note that this contact information is strictly to be used for medical ADA accommodations and that no other inquiries will be answered.

UnitedHealthcare creates and publishes the Transparency in Coverage Machine-Readable Files on behalf of Everforth Apex Systems.

Employee Type:

Contract

Location:

King George, VA, US

Job Type:

Date Posted:

September 9, 2026

Pay Range:

$55 - $67 per hour

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