Jobs and Careers

Information Systems Security Officer

United Statesfull_timeVerifiedPosted 10 Apr 2026

About the role

We are seeking an experienced Information Systems Security Officer (ISSO) to play a key role in ensuring compliance with all applicable security regulations across our programs. This individual will be a seasoned professional with deep technical expertise, responsible for overseeing program and project security implementation while contributing meaningfully to department goals and long‑term planning. The ideal candidate demonstrates sound judgment, knows when to elevate issues appropriately, and collaborates effectively with internal teams and customers.

Please note that this job description is not intended to be an exhaustive list of all responsibilities or duties associated with the role. Responsibilities may evolve or additional tasks may be assigned at any time, with or without notice.

Please Note: U.S. Citizenship is required.

ROLE AND RESPONSIBILITIES:

Responsibilities and duties may include, but are not limited to:

Perform day-to-day maintenance of systems, including auditing and patch management
Perform technical security assessments of complex systems
Identify points of vulnerability, non-compliance with established Information Assurance (IA) standards and regulations, and recommend mitigation strategies
Apply knowledge of IA policy, procedures, and workforce structure to implement secure networking, computing, and enclave environments
Write authorization and accreditation (A&A) documentation and ensure the systems are operated and maintained in accordance with these security plans
Enforce the design and implementation of trusted relationships among external systems and architectures
Support security planning, assessment, risk analysis, and risk management for client systems and programs
Interact with technical team members from multiple organizations in a diversified, team environment
Identify overall security requirements for the proper handling of MTSI and client data
Perform system or network designs that encompass multiple enclaves to include those with differing data protection/classification requirements
Recommend system-level solutions to resolve security requirements
Ensure all users have the requisite security clearances, authorizations, need-to-know, and are aware of their security responsibilities before granting access to client systems
Conduct periodic reviews of information systems to ensure compliance with the security authorization package
Perform key functions (above) and other security-related tasks as directed on multiple systems, at multiple sites, or for multiple clients
Schedule, perform and maintain records of required IS auditing, patching, maintenance, software/hardware changes, and scanning based on evolving threat/vulnerabilities and customer compliance requirements
Assess changes to an information system by performing periodic self-inspections, tests, and reviews of the IS program to ensure that systems are operating as authorized/accredited and that conditions have not changed; ensure corrective actions are taken for identified findings and vulnerabilities
Maintain a working knowledge of information system functions, security policies, technical security safeguards, and operational security measures
Coordinate with Information Systems Security Manager, Facility Security Officer (FSO) and Contractor Program Security Officers (CPSO) to define, implement and maintain information security policies, strategies, and procedures
Implement policies and procedures for responding to security incidents, and for investigating and reporting security violations and incidents
Receive direction/guidance from the MTSI Program Manager and/or Govt technical lead; translate guidance into actionable tasks performed by the project team
Manage/execute medium-large tech tasks
Ensures assigned tech tasks are properly coordinated/ efficiently accomplished w/best available resources
Serve as technical lead for time critical tech projects, test events/tasks requiring senior level tech expertise
Ensure all required resources (e.g. personnel, HW, SW, facilities, security) are identified to support assigned tasks
Coordinate w/Project Manager to verify time phased requirements are identified to meet contractual required deadlines
Accountable for the quality and timely delivery of all technical contract deliverables
Ensure that task related products are consistent in format and content with overall project deliverables
Routinely engage with Govt technical representative + tech leads for our teammates and subcontractors
Acts as a resource/mentor for colleagues with less experience
Works independently, with guidance in only the most com