Crossflow Technologies

Systems Engineer, Journeyman

Systems Engineer

US citizenship; degree in a related field with experience; security certification; active secret clearance.

Cybersecurity, Senior (ISSM)

Cybersecurity

US citizen with 15+ years of related experience or 10+ years with DoD experience; secret clearance eligibility; degree in a related field; relevant certifications.

Cybersecurity Senior

US Citizen with Bachelor's or Master's in a related field and significant DoD-related experience; DoW clearance; strong cybersecurity certification and program knowledge.

GDS Systems Administrator (mid-to-senior)

GDS Systems Administrator

8+ years systems administration; cyber certification (CompTIA Security+ or DoD-recognized); Linux CE certification; active Top Secret clearance; STIG implementation, patching and hardening; experience with servers, workstations, network devices.

Engineer – Configuration Management (CM)

Engineer – Configuration Management

Extensive CM experience in DoD RMF with Atlassian tools (Jira, Confluence); strong regulatory knowledge; CM in DevSecOps; DoD/CMM processes.

Senior Configuration Manager

Senior Configuration Manager with 10+ years in CM/PM, DoD experience; advanced degree preferred; strong writing and communication; security clearance required.

Modeling & Simulation (M&S) Analyst

Modeling & Simulation Analyst

Python, Linux, data analysis; strong communication; BS in Engineering/Math/Physics/CS; 3-10 years experience; active Secret clearance.

Submit Resume

Resume Submission

Submit resume for future opportunities; equal opportunity employer.

AI Engineer Software

Bachelor in STEM with 0-2 years experience; strong AI/ML knowledge; Python or R; TensorFlow/PyTorch; Linux; DoD Secret clearance; good communication.

Cybersecurity ISSO (Journeyman)

Cybersecurity ISSO

Security clearance required; cybersecurity ISSO duties to protect and monitor information systems.

Cybersecurity Engineer, Senior (ISSM)

Cybersecurity Engineer

Experience in cybersecurity engineering; senior level position; security-focused design and implementation.

Systems Engineer, Senior

Senior systems engineer role, full-time, in Huntsville, AL; requires relevant experience and clearance.

Cybersecurity Senior (ISSM)

Senior cybersecurity professional with ISSM responsibilities; location Huntsville, AL; full-time.

Senior cybersecurity engineer with ISSM focus; onsite in Huntsville, AL; security clearance may be required.

Senior cybersecurity engineer with ISSM responsibilities; security clearance not specified.

Cybersecurity Engineer (ISSM)

No explicit requirements listed in the posting.

Title	Location	Date
Systems Engineer, Journeyman Full Time · 3+ YOE Montgomery, Alabama, United States · Onsite	Montgomery, Alabama, United States Onsite	Apr 28, 2026
Cybersecurity, Senior (ISSM) Full Time · 10+ YOE Montgomery, Alabama, United States · Onsite	Montgomery, Alabama, United States Onsite	Apr 28, 2026
Cybersecurity Senior Full Time · 10+ YOE Montgomery, Alabama, United States · Onsite	Montgomery, Alabama, United States Onsite	Apr 28, 2026
GDS Systems Administrator (mid-to-senior) Full Time · 8+ YOE Huntsville, Alabama, United States · Onsite	Huntsville, Alabama, United States Onsite	Apr 23, 2026
Engineer – Configuration Management (CM) Full Time · 12+ YOE Randolph AFB, Texas, United States · Onsite	Randolph AFB, Texas, United States Onsite	Apr 21, 2026
Senior Configuration Manager Full Time · 12+ YOE Dayton or Kettering · Onsite	Dayton or Kettering Onsite	Apr 17, 2026
Modeling & Simulation (M&S) Analyst Full Time · 3+ YOE Huntsville, Alabama, United States · Onsite	Huntsville, Alabama, United States Onsite	Apr 15, 2026
Submit Resume Full Time Huntsville, Alabama, United States · Onsite	Huntsville, Alabama, United States Onsite	Apr 2, 2026
AI Engineer Software Full Time · $135K-$147K · 2+ YOE Colorado Springs, Colorado, United States · Onsite	Colorado Springs, Colorado, United States Onsite	Mar 19, 2026
Cybersecurity ISSO (Journeyman) Full Time Huntsville, Alabama, United States · Onsite	Huntsville, Alabama, United States Onsite	Feb 23, 2026
Cybersecurity Engineer, Senior (ISSM) Full Time Huntsville, Alabama, United States · Onsite	Huntsville, Alabama, United States Onsite	Feb 23, 2026
Systems Engineer, Senior Full Time Huntsville, Alabama, United States · Onsite	Huntsville, Alabama, United States Onsite	Feb 23, 2026
Cybersecurity, Senior (ISSM) Full Time Huntsville, Alabama, United States · Onsite	Huntsville, Alabama, United States Onsite	Feb 23, 2026
Cybersecurity Engineer, Senior (ISSM) Full Time Huntsville, Alabama, United States · Onsite	Huntsville, Alabama, United States Onsite	Feb 23, 2026
Cybersecurity Engineer, Senior (ISSM) Full Time Huntsville, Alabama, United States · Onsite	Huntsville, Alabama, United States Onsite	Feb 23, 2026
Cybersecurity Engineer (ISSM) Full Time Huntsville, Alabama, United States · Onsite	Huntsville, Alabama, United States Onsite	Oct 10, 2025

Name	Crossflow Technologies
Headquarters	US
Industries	Aerospace & DefenseEngineering Services
Activities	CybersecuritySystems EngineeringSoftware DevelopmentModeling and SimulationDefense Consulting
Type	Private
Employees	125
Tagline	Provides engineering, cybersecurity, and modeling services for defense programs.
Founded	2,012
Website	crossflowtechnologies.com

Crossflow Technologies

About Crossflow Technologies