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# Information Systems Security Officer (ISSO) - FULLY CLEARED with POLYGAPH REQUIRED

- **Company:** Constellation Technologies, Inc.
- **Location:** Annapolis Junction, MD, United States
- **Experience:** Expert
- **Salary:** $140,000.0 - $250,000.0
- **Contract:** Permanent contract
- **Skills:** Microsoft Windows, Communications Protocols, CompTIA Security+, Cyber Security, Data Security, Linux, Identity and Access Management, Software Engineering, Software Systems, Verification and Validation (Software), Data Processing, Software Security
- **Published:** October 29, 2026
- **Apply:** https://jobs.lever.co/cti-md/cfc94c60-7dde-4def-9658-aee57700eb62

## About the Role

Computer Security, Information/Data Security (InfoSec), U.S. National Institute of Standards and Technology (NIST), Microsoft Windows Operating System, CompTIA Security+, Computer Security, Linux Operating System, Validation Testing, Top Secret Clearance, Sensitive Compartmented Information (SCI), + Must be a US Citizen

 + Must have TS/SCI clearance w/ active polygraph (Polygraph must be within the last five (05) years).
 + Must have ten (10) years of experience as ISSO working independently, and/or on teams maintaining secure information system operations in isolated, connected and standalone environments.
 + Must have five (05) years of experience using tools to support IAVA management.
 + Must have five (05) years of experience using tools to support the preparation, maintenance, and management of SSPs and other security related documentation.
 + Demonstrated knowledge of and experience with several of the following: current security tools; hardware/software security implementation; communication protocols; encryption techniques/tools.
 + In-depth experience completing security evaluations of software systems or architectures to ensure they meet security requirements.
 + In-depth experience proposing, coordinating, implementing, and enforcing information systems security policies, standards, and methodologies, preferably on a large software or IT program.
 + Demonstrated experience performing day-to-day security operations of large, complicated information and information processing systems.
 + Must be committed to developing and adhering to best practices.
 + Must possess a high level of self-initiative and must be a solutions-oriented team player.
 + Must have excellent interpersonal skills., * Bachelor's degree in a related field and at least 12 years of relevant experience.
 * Extensive experience as an Information Systems Security Officer on large software development and integration programs.
 * DoD 8570 compliance with IAT Level II or higher.
 * DoD 8570 compliance with IAM Level II or higher.

## Description

Information Assurance, IAVA, System Security Plans (SSPs), RMF, Windows, Linux, Authorization to Operate, Verification and Validation, Security+, Security X, CASP+, NIST 800-53
Due to federal contract requirements, United States citizenship and an active TS/SCI security clearance and polygraph are required for the position.