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Sr. Information Systems Security Engineer; ISSE - Defense Searc Security Clearance

Job in Tysons, Fairfax County, Virginia, USA
Listing for: Defense Search
Full Time position
Listed on 2026-01-14
Job specializations:
  • IT/Tech
    Cybersecurity, Systems Engineer, Information Security, Network Security
Salary/Wage Range or Industry Benchmark: 185000 USD Yearly USD 185000.00 YEAR
Job Description & How to Apply Below
Position: Sr. Information Systems Security Engineer (ISSE) - Defense Searc with Security Clearance
Sr. Information Systems Security Engineer (ISSE) - Defense Search OVERVIEW Are you looking for a new career opportunity with an exciting Defense/Aerospace company?! Then we've got the right team for you! In this role, you're responsible for the duties listed below. Immediate opening for a Sr. Information Systems Security Engineer (ISSE) in Tysons, VA who possesses:
* Active TS/SCI with CI Poly

* 7+ years of experience as a cybersecurity engineer with a specialization in designing and building implementations of required security controls

* Experience implementing security controls from government regulatory frameworks and security standards (NIST, RMF, ICD 503, FISMA, FedRAMP and
* overlays)

* Proficient in incident response, security incident handling, and forensic analysis techniques

* Experience implementing controls within IL5 to IL6+ environments

* CISSP or equivalent certification to support DoD 8140 requirements Email resumes to and call . FULL

DESCRIPTION:

The selected candidate will be responsible for:
* Design, implement, and manage security solutions, including firewalls, intrusion detection/prevention systems, endpoint protection, and encryption mechanisms to ensure the organization's networks and systems remain secure.

* Conduct regular security assessments to identify vulnerabilities and weaknesses in systems, networks, and applications.

* Develop and implement incident response plans to effectively address security breaches, incidents, and breaches.

* Collaborate with cross-functional teams to establish and enforce security policies, standards, and procedures.

* Monitor network traffic, system logs, and security alerts to detect and respond to potential security incidents.

* Analyze and investigate anomalies and security breaches, taking appropriate actions to mitigate risks.

* Work closely with cross-functional teams, including IT, software development, and compliance, to integrate security into all phases of the development lifecycle and ensure a comprehensive approach to cybersecurity.

* Maintain thorough and accurate documentation of security processes, procedures, and configurations. Prepare detailed reports on security findings, incidents, and actions taken. The selected candidate will also possess:
* Active TS/SCI Clearance with CI poly.

* Bachelor's degree in Computer Science, Information Security, or a related field.

* 7+ years of experience as a cybersecurity engineer with a specialization in designing and building implementations of required security controls; and implementing continuous monitoring and auditing of solutions for compliance with security controls.

* Strong skills in specifying and implementing log collection into tools such as Splunk, and performing querying and analysis of aggregated logs to identify security-relevant anomalies or risks.

* Strong experience in implementing security controls from government regulatory frameworks and security standards (e.g., NIST SP 800-53, RMF, ICD 503, FISMA, FedRAMP, and overlays).

* Experience with implementing controls for data and/or application services and solutions within IL5 to IL6+ environments.

* Strong understanding of network protocols, operating systems, and infrastructure components.

* Proficiency in incident response, security incident handling, and forensic analysis techniques.

* Effective communication skills, with the ability to convey complex technical concepts to both technical and non-technical stakeholders.

* CISSP or equivalent certification to support DoD 8140 requirements. Salary Range: $185k/year For immediate and confidential consideration, please email your resume to and call . More information can be found at
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