Senior Applied AI EngineerCastelion is seeking a Senior Applied AI Engineer to design, build, and integrate AI tools and workflows that address business needs across the organization, including engineering, supply chain, and flight test. You will bridge business needs and technical execution-defining requirements, designing solutions, and delivering production-ready AI systems that solve real problems.
This role will work cross-functionally across the company and report directly to the Head of Flight Software.
Responsibilities- Collaborate with teams across the company to define Castelion's AI tooling and integration roadmap
- Architect and implement scalable, production-ready AI integrations for a wide range of use cases across the organization
- Integrate AI tools with existing enterprise systems and data sources
- Partner with IT, programs and cybersecurity teams to ensure compliance with customer and internal security policies
- Establish and maintain organization-wide AI development standards, including model selection criteria, prompt engineering best practices, and governance frameworks
- Assess emerging AI technologies to drive strategic internal adoption
Basic Qualifications- 7+ years of software development experience with proficiency Python and one static language (e.g. C, C++, C#, Java)
- 2+ years of Applied AI experience owning an AI agent, LLM-powered workflow, or automation end-to-end from prototype through production
- Understanding of prompt engineering, fine-tuning, and model evaluation
- Hands-on experience with RAG architecture, vector databases, and embedding models
- Strong experience collaborating with diverse stakeholders to gather requirements and develop tools that effectively address their needs
- Bachelor's degree in computer science (preferred) or another STEM field or equivalent work experience
Preferred Skills and Experience- 10+ years of software development experience
- Experience deploying self-hosted AI platforms on cloud infrastructure (Azure/AWS/GCP)
- Experience leveraging Model Context Protocol (MCP) to integrate enterprise data sources with AI tools and applications
- Knowledge of automated containerized deployment
- Comfortable working in a fast-paced, high growth environment with rapidly evolving business needs
- Experience building and leading small teams
Castelion offers a generous benefits package. Please refer to the bottom of our Careers page for more details.
Other Duties Please note this job description is not designed to cover or contain a comprehensive listing of activities, duties or responsibilities that are required of the employee for this job. Duties, responsibilities and activities may change at any time with or without notice.
Additional Eligibility Requirements This position may require access to classified information or restricted U.S. Government sites, systems, or information, as determined by the Company and/or applicable U.S. Government requirements. If the position is so designated, your employment in the role may be contingent upon your ability to obtain and maintain the required U.S. Government security clearance or other government authorization, and to satisfy any citizenship or other eligibility requirements imposed by applicable law, regulation, executive order, or government contract requirements. You will be notified if and when such requirements apply.
EAR/ITAR Requirements This position requires access to export-controlled information, and as such, employment (or hiring of a contractor) is contingent upon the candidate's ability to access all applicable export-controlled information without additional export licensing being required by the Bureau of Industry and Security and/or the Directorate of Defense Trade Controls.
