Information System Security Engineer

Omniscius Consulting; Lorton (VA); On-site; USD 140,000 - 190,000; Full time

Job summary

Omniscius Consulting is seeking an experienced Information System Security Engineer (ISSE) for an onsite role in Lorton, Virginia.

You will support secure mission enclaves, enterprise cybersecurity, and risk mitigation, with hands‑on work configuring Entra ID, Azure, ACAS, ePO, Splunk, and STIG/SCAP.

Requirements include TS/SCI clearance with Level III certs, 5–8 years of federal‑cyber experience or 10+ years if no degree, leadership experience, DoD compliance knowledge, and up to 10% travel.

Qualifications

• Active TS/SCI clearance required.
• Active IAT/IAM/IASAE Level III certs (CISSP, CISM, CASP+ or DoD 8570/8140).
• Bachelor's in CS/Cybersecurity/Engineering or 10+ years experience.
• Minimum 3 years leadership experience and cloud security experience.

Responsibilities

• Perform and review technical security assessments to identify vulnerabilities and gaps.
• Engineer cybersecurity solutions supporting Cyber Threat and Defensive Operations.
• Configure and sustain tools like ACAS, ePO, Splunk, STIG/SCAP in cloud environments.
• Configure Microsoft Entra ID and Azure security services for ATO requirements.
• Automate security monitoring, threat assessment, and reporting.
• Analyze security posture trends and brief ISSM/ISSO.
• Recommend controls and mitigation strategies per DoD standards.
• Implement controls per DoD cybersecurity policies.
• Support secure mission enclaves and enterprise cyber defense capabilities.

Skills

Security assessments

Leadership

Cloud security

Microsoft Entra ID

Azure Monitor

Active Directory

ACAS / Nessus

Splunk

McAfee ePO

RMF / ATO

DoD compliance

Threat detection

Education

Bachelor's degree in Computer Science, Cybersecurity, Engineering

10+ years of equivalent professional experience

Tools

ACAS

Nessus

Splunk

McAfee ePO

STIG/SCAP

Azure VPN Gateway

Azure Automation

Azure Monitor

Log Analytics

Job description

Our client is seeking an experienced Information System Security Engineer (ISSE) to join our team in Lorton, Virginia.

The ISSE will support the development and sustainment of secure mission enclaves while providing enterprise cybersecurity services and cyber network defense capabilities. This position is responsible for conducting technical security assessments, engineering secure solutions, automating defensive cyber activities, and advising technical and program leadership on cybersecurity risks and mitigation strategies.

The ideal candidate will have hands‑on experience with technologies such as ACAS, ePO, Splunk, STIG/SCAP, Microsoft Azure, Entra ID, Active Directory, Azure Automation, and YUM, along with a strong understanding of DoD cybersecurity requirements and security engineering principles.

Key Responsibilities

• Perform and review technical security assessments of computing environments to identify vulnerabilities, risks, and compliance gaps.

• Engineer cybersecurity solutions supporting Cyber Threat and Defensive Cyber Operations.

• Configure, deploy, integrate, and sustain cybersecurity tools such as ACAS, ePO, Splunk, STIG/SCAP, and YUM within cloud environments.

• Configure Microsoft Entra ID and Azure security services and tools in support of Authorization to Operate (ATO) requirements.

• Automate security monitoring, threat assessment, compliance, and reporting activities.

• Analyze system and organizational security posture trends and communicate findings to the ISSM and ISSO.

• Recommend cybersecurity controls, countermeasures, and mitigation strategies based on evolving threats and identified vulnerabilities.

• Implement security controls in accordance with applicable DoD cybersecurity policies and standards.

• Apply security engineering principles related to confidentiality, integrity, availability, authentication, and non‑repudiation.

• Recommend and plan system modifications based on cybersecurity exercises, assessments, vulnerability testing, and security testing results.

• Evaluate identified risks and deficiencies and recommend appropriate mitigation or risk‑acceptance strategies during certification and testing activities.

• Support the development, security, and sustainment of secure mission enclaves and enterprise cyber defense capabilities.

Required Qualifications

• Active TS/SCI security clearance.

• Active IAT/IAM/IASAE Level III certification, such as:

  • CISSP

  • CISM

  • CASP+ / SecurityX

  • Other qualifying DoD 8570/8140 Level III certification

• Bachelor's degree in Computer Science, Cybersecurity, Engineering, or a related technical field with 5–8 years of demonstrated professional experience.

• In lieu of a bachelor's degree, 10+ years of equivalent professional experience may be considered.

• Minimum 3 years of leadership experience.

• Demonstrated experience configuring, deploying, and sustaining cybersecurity tools within a cloud environment.

• Demonstrated experience configuring and provisioning cloud security services and tools.

• Hands‑on experience configuring Microsoft Entra ID.

• Experience performing cybersecurity assessments and identifying technical vulnerabilities and compliance deficiencies.

• Knowledge of DoD cybersecurity requirements, security controls, and risk management practices.

Preferred Qualifications

• 5+ years of leadership experience within cybersecurity or a related technical discipline.

• Microsoft Azure technical certifications.

• Hands‑on experience with Azure VPN Gateway.

• Experience with Azure Monitor and Log Analytics.

• Experience implementing and managing Azure security tools and services.

• Experience with cybersecurity automation and security monitoring.

• Experience supporting ATO, RMF, STIG, SCAP, vulnerability management, and DoD cybersecurity compliance activities.

Technical Skills

• Microsoft Azure

• Microsoft Entra ID

• Active Directory

• ACAS / Nessus

• Splunk

• McAfee/Trellix ePO

• STIG / SCAP

• Azure Automation

• Azure Monitor

• Log Analytics

• Azure VPN Gateway

• Vulnerability Management

• Cybersecurity Automation

• RMF / ATO

• DoD Cybersecurity Compliance

Additional Requirements

• Must reside within driving distance of Lorton, VA or be willing to relocate.

• Must be willing to work onsite.

• Must be willing and able to travel up to 10%.

• Pursuant to the requirements of the government contract, this position requires U.S. citizenship.