Technical Writer

Marathon TS is looking for a Technical Writer / Configuration Management Specialist who will be responsible for documenting, managing, and maintaining system configurations and technical documentation for the Spectrum XXI (SXXI) software suite at the Defense Information Systems Agency (DISA). This includes updating the Technical Data Package (TDP), maintaining version control of software releases, and ensuring compliance with DoD configuration management (CM) policies. The role supports DevSecOps processes, cybersecurity documentation, and formal system design reviews (PDR / CDR) to ensure software development and sustainment efforts align with government requirements.

An active secret clearance or higher is required.

This is a hybrid position requiring three days onsite per week.

Contract-Specific Responsibilities :

Technical Documentation & Writing

• Develop, update, and maintain TDP documentation, including :
• System Design Documents (SDD)
• Interface Design Descriptions (IDDs)
• Test Plans and Test Reports
• User Manuals and System Administration Guides
• Installation Packages (IPs) and Software Version Descriptions (SVDs)
• Cybersecurity Risk Assessments, RMF compliance reports, and ATO documentation
• Ensure all documents meet DoD 508 Accessibility Standards.
• Work closely with software engineers, system administrators, and cybersecurity teams to capture technical processes.
• Maintain compliance with DISA and NTIA documentation standards for SXXI.

Configuration Management (CM)

Software Development & Change Management Support

Risk & Compliance Documentation