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Information Systems Security Officer (ISSO)

Modern Technology Solutions, Inc.
401(k)
United States, Alabama, Huntsville
Oct 06, 2026
MTSI is currently seeking to hire an Information Systems Security Officer (ISSO) to join the team in Huntsville, Alabama.
The ISSO will collaborate closely with the ISSM and ISO to monitor information system(s), maintain security controls, and ensure compliance with authorization documentation. Responsibilities also include implementing configuration management across authorization boundaries, assessing the security impact of those changes, and making recommendations to the ISSM.
Responsibilities
  • Assist the ISSM in meeting their duties and responsibilities.
  • Prepare, review, and update authorization packages.
  • Ensure approved procedures are in place for clearing, sanitizing, and destroying hardware and media.
  • Notify the ISSM of any changes that may affect the authorization determination of the information system(s).
  • Conduct periodic reviews of information systems to verify compliance with the security authorization package.
  • Coordinate changes or modifications to hardware, software, or firmware of the system with the ISSM and AO/DAO prior to implementation.
  • Monitor system recovery processes to verify proper restoration of security features and procedures.
  • Maintain current and accessible IS security-related documentation for authorized personnel.
  • Collect, review, and document audit records, including any anomalies.
  • Attend technical and security training relevant to assigned duties (e.g., operating system, networking, security management).
  • Execute the cybersecurity portion of the self-inspection, including providing security coordination and review of system assessment plans.
  • Identify cybersecurity vulnerabilities and assist in implementing countermeasures.
  • Prepare reports on the status of security safeguards applied to computer systems.
  • Perform ISSO duties to support both in-house and external customers.
  • Conduct security impact analysis activities and report them to the ISSM for all configuration management changes within the authorization boundaries.
Required Experience
  • Bachelor's degree in a technical field (e.g. Information Technology, Information Assurance, Computer Science, or related discipline) is highly desired.
  • Minimum 5 years of relevant experience with demonstrated performance in roles such as System Administrator, Network Administrator, or ISSO.
Required Certifications
  • In accordance with DoW Directive 8570/8140 IAT, a minimum of a Level II certification (e.g. Security+, SSCP, CySA+, GSEC, CND, or GICSP).
  • A computing environment or technical certification is encouraged (e.g. MCSA, Cisco CCNA, Linux+, etc.).
Required Clearance
  • Active Secret Clearance cleared for TS
  • 2 years of experience with Special Access Programs (SAP) is highly desired.
Desired Qualifications
  • System IT/SA experience with IT systems is highly desired.
  • Strong understanding of cybersecurity principles, practices, and industry standards.
  • Experience, or knowledge with the A&A process, Configuration Management, Continuous Monitoring, Vulnerability Management, Patch Management, eMASS (or similar), ACAS (or similar), POA&Ms, STIGs, Evaluate-STIG and/or SCAP, SIEM software, Control SOPs, RMF, NIST SP 800-53, Security Plans, JSIG, NIST, FIPS, HW/SW list, PPS, Network Diagrams/Topologies is highly desired.
  • Experience with DCSA, MDA, or DIA is highly desired.
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  • Interesting Work:



    Our co-workers support some of the most important and critical programs to our national defense and security.






  • Values:



    Our first core value is that employees come first. We challenge our co-workers to provide the highest level of support and service, and reward them with some of the best benefits in the industry.






  • 100% Employee Owned:



    We have a stake in each other's success, and the success of our customers. It's also nice to know what's going on across the company; we have company wide town-hall meetings three times a year.






  • Great Benefits - Most Full-Time Staff Are Eligible for:





    • Starting PTO accrual of 20 days PTO/year + 10 holidays/year


    • Flexible schedules


    • 6% 401k match with immediate vesting up to $9k annually


    • Semi-annual bonus eligibility (July and December)


    • Company funded Employee Stock Ownership Plan (ESOP) - a separate qualified retirement account


    • Up to $10,000 in annual educational reimbursement


    • Other company funded benefits, like life and disability insurance


    • Optional zero deductible Blue Cross/Blue Shield health insurance plan







  • Track Record of Success:



    We have grown every year since our founding in 1993.




Modern Technology Solutions, Inc. (MTSI) is a 100% employee-owned engineering services and solutions company that provides high-demand technical expertise in Digital Transformation, Modeling and Simulation, Rapid Capability Development, Test and Evaluation, Artificial Intelligence, Autonomy, Cybersecurity and Mission Assurance

MTSI delivers capabilities to solve problems of global importance. Founded in 1993, MTSI today has employees at over 20 offices and field sites worldwide.

For more information about MTSI, please visit www.mtsi-va.com

MTSI embraces nine core values including our first core value of Employees come first. Consistent with our Core Values, we are committed to Equal Opportunity, making decisions without regard to race, color, religion, sex, national origin, age, military/veteran status, disability, or any other characteristics protected by applicable law. MTSI is committed to Equal Employment Opportunity and providing reasonable accommodations to applicants and employees with physical and/or mental disabilities.


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