About Castelion

Castelion is bringing a new approach to defense development and production: one that focuses on short, iterative design cycles, rapid testing in development, and modern commercial manufacturing strategies for production at scale. We’re designing, building, and testing next generation long range strike weapons systems to give America and its Allies a definitive edge and deter future conflicts.

Senior Weapons Systems Integration Engineer

The Role We are seeking a Senior Weapons Systems Integration Engineer to lead advanced weapon-platform integration efforts with a primary focus on multi-role combat aircraft. This role will directly support the development and integration of cutting-edge missile technologies, ensuring alignment with warfighter needs and operational capabilities. You’ll play a pivotal role in bridging emerging technologies with real-world applications, enabling superior missile system performance and reliability.

Responsibilities:

· Support the development of advanced weapon concepts and technologies, focusing on missile integration with the multi-role combat aircraft platforms.

· Develop, maintain, and execute against a fast-paced plan to successfully integrate a weapons system.

· Serve as the primary point of contact to aircraft manufacturers and customers in support of weapons integration.

· Develop and coordinate technical specifications and other documentation to support integration efforts.

· Generate system and subsystem requirements based on a comprehensive understanding of current and emerging threats, warfighter needs, capability trade studies, and emerging technologies.

· Monitor the progress of internal technical development, ensuring alignment with program goals and documenting/reporting progress to the team.

· Evaluate requirements, functional descriptions, and hardware/software specifications for completeness and traceability.

· Review interface specifications, drawings, and design documents to assess functional, electrical, software, and physical interfaces.

· Provide technical guidance during meetings, project reviews, and test planning activities.

· Support ground and flight tests, including planning, execution, and documentation/reporting of results.

Job Requirements:

· Bachelor’s degree in an engineering discipline.

· 5+ years working in weapons systems integration or related fields.

· 2+ years of relevant technical project management experience.

· Active TOP SECRET security clearance with a background investigation completed within the past five years.

· Willingness to support geographically dispersed activities and travel approximately twice monthly.

Preferred Skills:

· Firsthand engineering experience and deep familiarity with multi-role combat aircraft platforms and/or current missile systems.

· Experience with weapons system development and integration onto air platforms.

· Experience leading an integration effort culminating in a fielded weapons system.

· Expertise working directly with DoD customers.

· Master’s degree in an engineering discipline.

· Exceptional communication skills, both written and verbal, with the ability to work collaboratively in high-performing teams.

Leadership Qualities

Bias to Action and Creative Problem Solving. Desire and experience questioning assumptions in ways that lead to break through ideas that are ultimately implemented. Successfully bring in applicable processes/concepts/materials from other industries to achieve efficiency gains. Ability to personally resolve minor issues in development without requiring significant support.

High Commitment, High Initiative. A successful candidate will have a genuine passion for Castelion’s mission and consistently look for ways to contribute to the company’s technical goals and prevent hardware blockers. Ability to work in a fast paced, autonomously driven, and demanding atmosphere. Strong sense of accountability and integrity.

Clear Communicator. Proactively communicates blockers. Trusted in previous roles to be voice of company with regulators, suppliers, gate keepers and customers. Capable of tactfully managing relationships with stakeholders to achieve company-desired outcomes without compromising relationships. Emails, IMs and verbal interactions are logical, drive clarity, and detailed enough to eliminate ambiguity.

ITAR Requirements:

• To conform to U.S. Government export regulations, applicant must be a (i) U.S. citizen or national, (ii) U.S. lawful, permanent resident (aka green card holder), (iii) Refugee under 8 U.S.C. § 1157, or (iv) Asylee under 8 U.S.C. § 1158, or be eligible to obtain the required authorizations from the U.S. Department of State.

Employment with Castelion is governed on the basis of competence and qualifications and will not be influenced in any manner by race, color, religion, gender, national origin/ethnicity, veteran status, disability status, age, sexual orientation, gender identity, marital status, mental or physical disability or any other legally protected status.