> Markdown version of [/jobs/ext/2819006-information-systems-security-engineer](https://www.wearedevelopers.com/jobs/ext/2819006-information-systems-security-engineer). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md).

---

# Information Systems Security Engineer

- **Company:** Everforth Apex
- **Location:** Dahlgren, VA, United States
- **Experience:** Experienced
- **Salary:** $114,400.0 - $139,360.0
- **Contract:** Temporary to permanent
- **Skills:** Cyber Security, Software Vulnerability Management, Apex Code, Information Technology, Nessus, Vulnerability Analysis
- **Published:** September 10, 2026
- **Apply:** https://www.dice.com/job-detail/9a17036f-74bb-4c3d-92b7-912a4e0a6c19

## About the Role

* Bachelor's 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., * 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).

## Description

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., * 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.


## Related Videos

- [Security Pitfalls for Software Engineers](https://www.wearedevelopers.com/videos/726-security-pitfalls-for-software-engineers)
- [Thinking Differently - How to Make Money from Cyber Attacks & Cheats](https://www.wearedevelopers.com/videos/745-thinking-differently-how-to-make-money-from-cyber-attacks-cheats)
- [Cyber Security: Small, and Large!](https://www.wearedevelopers.com/videos/259-cyber-security-small-and-large)
- [Checkmate: 5 Real Incidents That Can End a Software Company](https://www.wearedevelopers.com/videos/100126-checkmate-5-real-incidents-that-can-end-a-software-company)
- [ Secure Code Superstars: Empowering Developers and Surpassing Security Challenges Together](https://www.wearedevelopers.com/videos/422-secure-code-superstars-empowering-developers-and-surpassing-security-challenges-together)
- [Less Is More: How Lagom and Agile Can Create Harmonious Workflows](https://www.wearedevelopers.com/videos/1993-less-is-more-how-lagom-and-agile-can-create-harmonious-workflows)

## Related Articles

- [9 Ways to Make Money Hacking](https://www.wearedevelopers.com/magazine/333-9-ways-to-make-money-hacking)
- [Understanding and Mitigating Common Web Vulnerabilities](https://www.wearedevelopers.com/magazine/565-understanding-and-mitigating-common-web-vulnerabilities)
- [Events like RSAC Get You CISOs. Developers Decide What Actually Gets Deployed.](https://www.wearedevelopers.com/magazine/693-events-like-rsac-get-you-cisos-developers-decide-what-actually-gets-deployed)
- [Dev Digest 134 - Where pixels sing?](https://www.wearedevelopers.com/magazine/477-dev-digest-134-where-pixels-sing)
- [Walking Into The Era of Supply Chain Risks](https://www.wearedevelopers.com/magazine/106-walking-into-the-era-of-supply-chain-risks)
- [Best Paying Jobs in Technology](https://www.wearedevelopers.com/magazine/256-best-paying-jobs-in-technology)