> Markdown version of [/jobs/ext/3865974-sr-isso](https://www.wearedevelopers.com/jobs/ext/3865974-sr-isso). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md).

---

# Sr ISSO

- **Company:** Open Systems Inc.
- **Location:** Huntsville, AL, United States
- **Experience:** Expert
- **Contract:** Permanent contract
- **Skills:** Xacta, Cyber Security, Information Systems, Data Security, Information Security Management, Information Security Management System
- **Published:** October 22, 2026
- **Apply:** https://www.wayup.com/i-j-Sr-ISSO-Open-Systems-Technologies-Corporation-554319104706945/

## About the Role

Experience with the implementation, oversight, and maintenance of the security configuration, practices, and procedures for systems
10 years of experience as an ISSO
4 year Degree
Top Secret clearance with the ability to sit for a CI Poly
Preferred Skills:
o Experience with Xacta o Possession of excellent verbal and written communication skills o Possession of excellent interpersonal skills o CISSP or CompTIA Certification (any level)

## Description

Open Systems Technologies Corporation is looking for a seasoned ISSO professional to join our high performing cyber team in support of a large SOC enterprise environment.
Responsibilities
Serves as the principal advisor to the Information System Owner (SO), Business Process Owner, and the Chief Information Security Officer (CISO) / Information System Security Manager (ISSM) on all matters, technical and otherwise, involving the security of an information system. ISSOs are responsible for ensuring the implementation and maintenance of security controls. Directs and implements the necessary controls and procedures to cost-effectively protect information systems assets from intentional or inadvertent modification, disclosure, or destruction. Provides guidance and direction for the physical protection of information systems assets to other functional units. Provides reports to superiors regarding effectiveness of data security and makes recommendations for the adoption of new procedures. Assist with reviewing, developing, and navigating the system, team, and customer through the Authority to Operate (ATO) accreditation/certification documentation process. Perform network
self-inspections. Create new and edit existing documentation that forms the Authority to Operate (ATO) package to include the System Security Plan and IS contingency plan. Develop Plan of Action and Milestone (POAMS) from vulnerability data and enter into the system of record.