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Information Systems Security Officer Senior (ISSO)

York Space Systems
Greenwood, CO Full Time
POSTED ON 8/4/2026
AVAILABLE BEFORE 10/4/2026
Salary: $120,000-$135,000

York Space Systems was founded to radically improve spacecraft affordability and reliability, transforming, and enabling next generation space mission operations worldwide. Today, it is one of the most innovative aerospace companies, specializing in both end-to-end customer solutions and the rapid production of spacecraft platforms. York’s complete Space Segment Solution including spacecraft production, payload integration, system integration & test, launch services, ground segment services, and mission operations enables customers to leverage York’s existing technology solutions to get rapidly and responsively to orbit. We’re looking to expand our team across the board.

York Space Systems is seeking a Senior Information Systems Security officer (ISSO) to facilitate A&A (Authorization & Assessment) efforts throughout multiple systems’ RMF lifecycle. The selected candidate will take the lead in supporting multiple RMF accreditation efforts and will perform tasks that include determining DoD requirements, hardware/software configuration management (to include baseline configuration), risk assessments/vulnerability assessments, testing and documenting security controls, and ensuring overall compliance with DoD Cybersecurity policies. The ideal candidate will have experience working as an ISSO or security relevant field and must be comfortable operating in a senior role and mentor for junior ISSOs.  The selected candidate will be able to speak directly with customers with little to no Information System Security Managers (ISSM) involvement and be the face of security for their selected boundaries. Responsibilities below are inclusive ISSO duties.

RESPONSIBILITIES
  • Oversee day-today operations required to perform RMF
  • Manage tasks and create deadlines to meet security requirements
  • Be forward facing for customer interactions which will translate into system requirements
  • Spearhead building RMF packages within eMASS and perform continuous monitoring for the full duration of the information system lifecycle
  • Implement the Risk Management (RMF) process throughout the entire A&A lifecycle of the system(s) or multiple ATOs across different locations, supporting all efforts pre and post Authority to Operate (ATO) determination
  • Assist the ISSM in meeting their duties to support A&A activities and coordinate with system’s Security Controls Assessor (SCA) and Authorizing Official (AO)
  • Perform and review technical security assessments of the system(s) to identify points of vulnerability, non-compliance with established cybersecurity standards and regulations, and recommend mitigation strategies to maintain operational security posture for the boundary systems
  • Conduct risk analyses from vulnerability, compliance scans, penetration testing results, and/or other audit activities
  • Create and maintain Plan of Action and Milestones (POA&Ms), System Security Plans (SSPs), Security Control Traceability Matrices (SCTMs), Standard Operating Procedures (SOPs), Configuration Management Plans, Contingency Plans and Test Result/Security Impact Analyses
  • Ensure approved procedures are in place for clearing, sanitizing, and destroying various types of hardware and media
  • Conduct continuous monitoring (ConMon) activities for applicable authorization boundaries
  • Apply and maintain up to date application of Security Technical Implementation Guides (STIGs) to required components of the information systems
  • Maintain inventory and asset configuration to include change management documentation
  • Lead System level change request through formalized Configuration Control boards (CCB)
  • Ensure that the appropriate operational security posture is maintained for the information system, working in close collaboration with the information system owner and the ISSM
  • Notify ISSM when changes occur that might affect the authorization determination of the information system(s)
  • Experience in advising System Administrators and Network Administrator to Remediate system decencies
  • Report all security-related concerns and incidents to the ISSM
  • Able to also handle security concerns in lieu of ISSM advise on security concerns IAW system procedures

REQUIRED QUALIFICATIONS
  • Experience developing and documenting DoD Assessment and Authorization documentation
  • Knowledge of CNSSI 1253, NIST 800 Series (primarily 800-53, 800-53A, 800-171), RMF
  • 5 years of IA/Cyber Security experience
  • Bachelor’s degree or higher in Computer Science or Security
  • Security /CISM certification or equivalent
  • Experience with DCSA tools such as eMASS, STIGs and SCAP
  • Possess an Active Secret clearance or higher

REQUIREMENTS/PREFERRED QUALIFICATIONS
  • Well versed with RMF package creation and maintenance artifacts to support A&A decision
  • Experience using DISA Security Technical Implementation Guides (STIGs), Security Requirements Guide (SRGs) and Security Content Automation Protocol (SCAP) to audit and securely configure network-enabled devices
  • Fundamental knowledge of DISA Enterprise Mission Assurance Support Service (eMASS)
  • Proficient with vulnerability tools and audit review tools which include audit log analysis and report generation (Nessus and Splunk experience preferred)
  • Experience conducting risk analysis on products and system components through review of CVEs, plugins, CWEs
  • Experience in conducting software due diligence with COTS and GOTS solutions
  • Strong communication and documentation skills
  • Flexible and able to adapt to a rapidly changing environment
  • Positive, self-motivated individual who can complete tasks independently
  • Working knowledge of system functions, security policies, technical security safeguards, and operational security measures.

BENEFITS  
In addition to compensation, York Space Systems is proud to offer a comprehensive benefits package including medical, dental, and vision insurance along with PTO and a 401K.

HOW TO APPLY
Interested candidates are encouraged to apply by clicking the “Apply for this position” link below. York Space Systems will be accepting applications on a rolling basis until the position is closed.   

York Space Systems provides equal employment opportunities to all employees and applicants for employment and prohibits discrimination and harassment of any type without regard to race, color, religion, age, sex, national origin, disability status, genetics, military or protected veteran status, sexual orientation, gender identity or expression, or any other characteristic protected by federal, state, or local laws.  Must have permanent authorization to work in the United States.  This policy applies to all terms and conditions or employment, including recruiting, hiring, placement, promotion, termination, layoff, recall, transfer, leaves of absence, compensation and training.  YORK SPACE SYSTEMS IS AN EEO EMPLOYER.

Salary : $120,000 - $135,000

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