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Cleared Information Systems Security Engineer (ISSE) - L3 with Security Clearance

Virtual Service OperationsLorton, VA🇺🇸United StatesPosted 2 Sept 2026

Quick Overview

Seniority
Mid Senior
Employment type
Employee
Work mode
Hybrid
Location
Lorton, VA, United States
Posted
Yesterday
AWSSplunkActive DirectoryAzureHTTPS

Job Description

Opportunity: Virtual Service Operations is searching for an Information System Security Engineer (ISSE) to join our dynamic team of experts in Lorton, Virginia. As an ISSE, you will be responsible for conducting security assessments, engineering secure solutions, automating defensive cyber activities, and advising leadership on risks and mitigation strategies. Candidates should bring expertise with technologies such as ePO, Splunk, ACAS, Azure Automation, STIG/SCAP, and Active Directory to secure complex mission systems and ensure compliance with DoD cybersecurity standards. As a part of this team you will support the development and sustainment of secure enclaves, providing enterprise services and cyber network defense capabilities.

Key Responsibilities

  • Perform and review technical security assessments of computing environments to identify vulnerabilities and compliance gaps.
  • Engineer unique cybersecurity solutions to support Cyber Threat and Defensive Operations.
  • Configure, deploying, and sustain cyber security tools such as (ACAS, ePO, Splunk, STIG/SCAP, YUM) in a cloud environment.
  • Configure Entra ID and Azure security services / tools as they relate to ATO achievement.
  • Automate security monitoring, threat assessments, and reporting functions.
  • Analyze system and organizational security posture trends; provide findings to the ISSM/ISSO.
  • Recommend cybersecurity measures and mitigations based on evolving threats and vulnerabilities.
  • Implement security controls in alignment with DoD policies and principles of confidentiality, integrity, availability, authentication, and non-repudiation.
  • Recommend and plan modifications based on exercise results and security testing outcomes.
  • Mitigate or recommend acceptance of identified risks and deficiencies during certification and testing activities.

Required Qualifications

  • Active IAT/IAM/IASAE Level III certification such as: CASP + (SecurityX), CISSP, or CISM.
  • Active TS/SCI security clearance.
  • Bachelor’s degree in Computer Science, Engineering, or Cyber security (or related field) and 5 - 8 years of demonstrated professional experience OR 10+ years of demonstrated equivalent professional experience in lieu of a degree.
  • 3+ years of leadership experience.
  • Demonstrated experience configuring, deploying, and sustaining cyber security tools within a cloud environment.
  • Demonstrated experience configuring and provisioning cloud security tools and services
  • Demonstrated experience configuring Microsoft Entra ID.

Preferred Qualifications

  • 5+ years leadership experience in cybersecurity or related technical field.
  • Technical certifications in Microsoft Azure.
  • Demonstrated experience configuring Azure VPN Gateways, Azure Monitor/Log Analytics, and other Azure security tools and services.  Requirements
  • Must be within driving distance of Lorton, VA OR willing to relocate there.
  • Must be willing to work onsite
  • Must be willing and able to travel up to 10%
  • Please note that pursuant to a government contract, this specific position requires U.S. citizenship status
What is Important to Us:
  • You are an excellent communicator in writing and speaking.
  • You have the ability to work independently but also value teamwork.
  • Your problem-solving skills are excellent.
  • You are looking for a job where performance appraisals occur regularly, and you look forward to advancing your career.
  • You seek a community of virtue-centered co-workers and clients.
What we offer you: As part of the VSO company, you will be part of a virtue-centered team who value their work and teammates. This is a no-jerk zone. We provide ongoing learning and development opportunities to foster continuous growth. We offer competitive salaries, health benefits, and flexible work arrangements.

More About VSO: VSO is a hybrid cloud and managed services consulting firm. Much of VSO’s success can be attributed to our deep partnerships with IT services industry leaders such as AWS, IBM, Microsoft and others. VSO leverages numerous other partner relationships so as to provide our customers with optimal support. Additionally, we take pride in taking care of our employees. We offer a wide variety of benefits for eligible employees related to health, retirement, professional development, and more! For more information, please visit our website at https://vso-inc.com/careers

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