About the role
Why Castelion, Why Now Castelion is moving incredibly fast to develop and deliver advanced defense systems at a time when execution matters more than ever. We believe focus and technical excellence are decisive advantages - and we are building a team that can deliver real capability, not just concepts. This is a rare opportunity to join at an early stage, where your work will directly shape critical systems, influence major technical decisions, and have immediate, real-world impact. Senior Counsel, Trade & Export Compliance Castelion is seeking a Senior Counsel, Trade & Export Compliance to help build and scale the company's international trade, export controls, sanctions, and defense compliance program. This is a hands-on senior legal role for someone who can operate at the intersection of law, engineering, manufacturing, supply chain, business development, security, and government contracting. You will advise the business on complex trade and compliance issues, help protect controlled technology, and build durable systems that allow the company to move quickly while complying with U.S. law. The ideal candidate has strong experience with ITAR, EAR, export licensing, technology-control plans, deemed exports, and defense-related compliance. Just as importantly, this person should be pragmatic, operationally minded, and comfortable working in a fast-moving hardware environment where legal judgment must translate into executable processes.
Responsibilities Serve as the senior legal advisor on export controls, sanctions, and international trade issues across engineering, manufacturing, supply chain, business development, security, and government programs. Support classification of hardware, software, technical data, services, and defense articles under the ITAR and EAR. Draft, submit, and manage export licenses, agreements, exemptions, and related authorizations. Develop and maintain technology-control plans, export-control procedures, visitor controls, shipping controls, and access-control processes. Partner with engineering, security, IT, and facilities teams to protect controlled technical data and manage access by employees, contractors, suppliers, customers, and visitors. Advise on deemed export issues, foreign person access, supplier interactions, international travel, conferences, demonstrations, customer engagements, and technical collaborations. Help design and implement scalable compliance systems for a rapidly growing defense manufacturer. Train employees on export controls, sanctions, controlled technical data, and practical compliance expectations. Support internal audits, investigations, disclosures, corrective actions, and continuous improvement of the compliance program. Work closely with Legal, Security, Supply Chain, People, Engineering, Finance, and Business Development to identify and resolve compliance risks early. Help establish the compliance culture, systems, and judgment expected of a trusted national security company.
