Information System Security Engineer – ISSE

Applied Research Solutions

Information System Security Engineer at ARS designing secure solutions for DoD enclave environments. Involves cybersecurity practices, security assessments, and complying with DoD policies.

Posted 5/16/2026full-timeRemote • Ohio • 🇺🇸 United StatesMid-LevelSeniorWebsite

Tech Stack

Tools & technologies

AzureCloudCyber SecuritySplunk

About the role

Key responsibilities & impact

Engineer secure solutions supporting Cyber Threat and Defensive Operations for DoD enclave environments.
Integrate, configure, and monitor Microsoft Defender for Cloud, Sentinel, Azure Policy, Azure Monitor, and Log Analytics.
Automate threat assessment, security reporting, and continuous monitoring workflows.
Develop and maintain Azure-based detections, dashboards, alerts, and automated response playbooks.
Perform and document technical security assessments to identify vulnerabilities and recommend mitigation strategies.
Implement and validate security controls and secure configurations in alignment with DoD, NIST, and organizational policies.
Support all phases of the RMF lifecycle, including control selection, implementation, assessment, authorization, and continuous monitoring.
Mitigate or correct security deficiencies identified during assessments, testing, or audits, and provide risk acceptance recommendations to the ISSM.
Analyze, assess, and report system and organizational security posture trends to the ISSM/ISSO.
Support audit preparation, artifact collection, and evidence validation for compliance activities.
Ensure security operations, configuration changes, and maintenance activities are properly documented and kept current.
Evaluate cybersecurity tools, compensating controls, and security technologies to ensure risk is reduced to acceptable levels, and report findings to the ISSM.
Assist the ISSM/ISSO in developing and maintaining RMF documentation, including System Security Plans (SSPs), security diagrams, control evidence, and ATO package materials.
Ensure security documentation and SSPs remain current and compliant with applicable DoD and program-specific policies.
Support incident response investigations by analyzing security logs, alerts, and system activity.

Requirements

What you’ll need

Must be a US citizen
Top Secret clearance with SCI eligibility
5+ years related experience in SCI/SAP environments
Prior experience functioning as an ISSE or security engineer supporting RMF processes
Advanced technical competency and experience in one or more of the following areas: Active Directory Domain Services, Active Directory Federated Services, Active Directory Certificate Services, Windows Server Update Services, ePO, Splunk, STIG/SCAP, YUM, ACAS Automation, and Azure Monitor / Log Analytics.
Security+ certification
Bachelor’s degree in Computer Science, Engineering, or related field OR equivalent experience
5-8 years of demonstrated performance in related technologies

Benefits

Comp & perks

competitive benefits package
awards and recognition program
personalized attention from ARS Senior Managers

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills & Tools

cybersecuritythreat assessmentsecurity reportingcontinuous monitoringsecurity controlsvulnerability assessmentincident responseautomated response playbooksrisk management framework (RMF)security documentation

Soft Skills

analytical skillscommunicationproblem-solvingattention to detailorganizational skills

Certifications

Security+Top Secret clearance with SCI eligibility