Castellum, Inc., together with its subsidiaries, operates as a technology company in the United States and internationally. It offers intelligence analysis, software development and engineering, program management, strategic and mission planning, information assurance, cybersecurity and policy support, data analytics, and model-based systems engineering services. The company's products and services are used in information technology, electronic warfare, information warfare, and cybersecurity areas. It serves defense, intelligence, civilian agencies, and local and federal governments, as well as financial services, healthcare, and other users of large data applications. The company is based in Vienna, Virginia.