Cybersecurity Information System Security Officer (ISSO)

Overview
LMI is seeking a Cybersecurity Information System Security Officer (ISSO) with demonstrated experience managing the security posture of DoD information systems to support a United States Special Operations Command (USSOCOM) mission partner.

This position requires an active Secret clearance with the ability to obtain a Top-Secret.

Responsibilities
As the ISSO, you are responsible for the day-to-day security operations of one or more information systems and for maintaining the system’s Authorization to Operate (ATO) under the DoD Risk Management Framework (RMF). You will serve as the primary point of contact for the ISSM, the Authorizing Official’s representative, and the engineering team on all matters of system security.

You will develop and maintain the full body of RMF artifacts—System Security Plan (SSP), Security Assessment Plan (SAP), Plan of Action and Milestones (POA&M), Continuous Monitoring strategy, Privacy Impact Assessment, and Contingency Plan—and shepherd packages through eMASS or equivalent.

You will track vulnerabilities, IAVMs, and STIG compliance; manage POA&M closure; coordinate audits and assessments; and review system changes for security impact. You translate policy (NIST 800-53, CNSSI 1253, DoDI 8500.01, 8510.01) into clear engineering guidance.

You proactively solve unusual and/or complex problems with little or no direction given and operate effectively in a fast-paced technical environment supporting senior military leadership.

You partner closely with the Cybersecurity Engineer, the engineering team, and government stakeholders to keep the system secure, compliant, and operational.

Qualifications
Required Qualifications

• Active Secret clearance required with the ability to obtain and maintain a Top-Secret clearance

• Minimum of 3-years of experience as an ISSO, ISSM, or equivalent role on DoD information systems

• Demonstrated experience taking systems through the RMF process and achieving/maintaining ATO

• Hands-on experience authoring and maintaining SSPs, SARs, POA&Ms, and Continuous Monitoring documentation

• Working knowledge of NIST SP 800-53, NIST SP 800-37, CNSSI 1253, and applicable DoD/CJCS issuances

• Experience using eMASS, Xacta, or equivalent governance, risk, and compliance (GRC) tooling

• DoD 8570/8140 IAM Level II certification (Security+ CE, CAP, CASP+, or equivalent) at time of hire

Desired Qualifications

• Active DoD Top-Secret Clearance

• Bachelor’s or Master’s Degree in Cybersecurity, Information Systems, or related field

• DoD 8570/8140 IAM Level III certification (CISSP, CISM, or equivalent)

• Experience supporting Special Operations, Intelligence Community, or Combatant Command customers

• Experience with cloud ATOs in Azure Government, AWS GovCloud, or Microsoft 365 GCC High

• Familiarity with DevSecOps, CI/CD security gates, and continuous ATO (cATO) approaches

• Prior experience as a Security Control Assessor (SCA) or assessment team member

Target salary range: $111,426 - $192,890

Disclaimer: The salary range displayed represents the typical salary range for this position and is not a guarantee of compensation. Individual salaries are determined by various factors including, but not limited to location, internal equity, business considerations, client contract requirements, and candidate qualifications, such as education, experience, skills, and security clearances.

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Applicants must meet eligibility requirements for a U.S. Government security clearance. Only US Citizens are eligible for a security clearance. For this position, LMI will only consider applicants with security clearances or applicants who are eligible for security clearances, due to the nature of the work.