Specialized Subsidiaries Supporting a Unified Mission
Castellum’s subsidiary companies bring focused expertise across cybersecurity, software and systems engineering, electronic warfare, technical services, logistics, program support, and mission operations.
Specialty Systems, Inc. (SSI)
Overview
Founded in 1978, SSI, a wholly owned subsidiary of Castellum, Inc. is a trusted provider of software engineering, systems engineering, cybersecurity, network engineering, and mission support services for defense, government, and commercial customers. With over 40 years of experience supporting mission-critical systems, we deliver high-value IT and engineering support, particularly to the U.S. Navy and Department of Defense. Our strength lies in transforming complex challenges into reliable, efficient systems while building strong customer partnerships and maintaining excellent contract performance.
Core Competencies:
Software Engineering & Digital Modernization: Transforming complex automation problems into elegant and efficient solutions.
Cyber Security Engineering: Safeguarding mission-critical DOD systems from cyber threats, ensuring operational readiness and mission assurance objectives.
Systems Engineering & Integration: Delivering systems engineering support across the lifecycle of complex technical systems, including requirements development, architecture support, integration planning, and interface analysis.
Program Support & Network Engineering: Comprehensive behind-the-scenes execution support and robust network solutions for connected environments, and lab infrastructure.
Additional Expertise: Broad IT services, configuration management, test planning, test automation, data analytics, prototype development and mission support for Naval Air Warfare Center, Navy aviation and other mission environments.
Primary Location: Toms River, New Jersey.
Global Technology and Management Resources, Inc. (GTMR)
Overview
GTMR, a wholly owned subsidiary of Castellum, Inc. is a customer-focused engineering services company specializing in design engineering, prototype manufacturing, testing of cutting-edge tactical systems, and comprehensive lifecycle support. We are committed to innovation, maintainability, and operational excellence for complex defense systems, especially those supporting Naval Air Systems Command (NAVAIR) and related programs.
Core Capabilities
Engineering Services: RF, electrical, mechanical, and systems engineering; innovation, enhancement, and sustainment of complex systems.
Logistics Support: Full lifecycle logistics management, procurement, maintenance (up to Depot level), maintaining and transporting client assets worldwide.
Operational Test & Evaluation (OT&E): Planning, integration, developmental/operational testing, evaluations, and assessments. Dedicated laboratories for full system hardware/software analysis to provide essential information to our clients.
Additional Services: Prototype manufacturing, interactive electronic technical manuals with intelligent wiring, training, and specialized intelligence services.
Primary Location: Hollywood, Maryland (near Naval Air Station Patuxent River).
Corvus Consulting, LLC (Corvus)
Overview
Corvus, a wholly owned subsidiary of Castellum, Inc. is a specialized advisory and operational support firm dedicated to preserving U.S. and coalition security. Our team delivers defense-related consulting, operations, strategic planning, assessments, and innovative solutions for the Department of Defense and Intelligence Community. With full-spectrum project and program support worldwide, we leverage deep relationships with government leaders, industry, and academia to provide cost-effective, mission-critical expertise in complex information warfare and electromagnetic domains.
Core Capabilities
Information Warfare & Operations: Expertise in (Beyond) 5G, Information Advantage Activities, Electromagnetic Warfare, Cyberspace Operations, Cyber Electromagnetic Activities, Joint/Electromagnetic Spectrum Operations, Information Operations, and Information Assurance.
Strategic Services: High-level policy development, Congressional liaison, requirements analysis, DOTMLPF-P development, hardware/software system design, and full-spectrum program management.
Primary Location: Vienna, Virginia (with representation across the United States).