Staff Engineer, Aircraft Thermal Systems (RX) (R6002)

Shield AI is a venture-backed defense-tech company with the mission of protecting service members and civilians with intelligent systems. Its products include Hivemind autonomy software, V-BAT and X-BAT aircraft, and Aechelon simulation and synthetic reality technologies. With offices and facilities across the U.S., Europe, the Middle East, and Asia-Pacific, Shield AI’s technology actively supports operations worldwide. For more information, visit www.shield.ai. Follow Shield AI on LinkedIn, X, Instagram, and YouTube. 

Job Description: As a Senior Staff (L5) Environmental Control System (ECS) Engineer, you will take full technical ownership of the Environmental Control System architecture, analysis, design, and integration for a dedicated special access program. Serving as the sole ECS subject matter expert on this program, you will work from first principles to execute trades, size systems, design hardware, manage external suppliers, support proposals and capture, and deliver flight-ready hardware in a rapid-iteration development environment.  This position requires a balance of technical rigor, rapid decision-making, and hands-on engineering to efficiently transition concepts into operational capability. The ideal candidate is comfortable solving complex problems, taking ownership, working within an accelerated aircraft development environment, and is motivated by getting meaningful capability into the hands of operators quickly.

What you'll do:

Thermal System Ownership: Define and mature aircraft-level thermal environments and thermal management solutions for vehicle bays, hot surfaces, and other thermal-critical installations.

Thermal Analysis and Modeling: Perform first-principles heat transfer and fluid mechanics calculations, then develop analytical, finite-difference, and CFD models to characterize conduction, convection, radiation, and coupled thermal-fluid behavior.

Cooling System Design: Design and evaluate active and passive cooling solutions, including heat-rejection paths, airflow, ducting, thermal interfaces, and hardware needed to manage vehicle thermal loads.

Requirements and Risk Management: Generate thermal requirements, assess technical risks, and develop actionable design recommendations that balance thermal performance with vehicle power, mass, volume, maintainability, and integration constraints.

Vehicle and Hardware Integration: Develop thermal hardware layouts and CAD models, and resolve interfaces with structures, avionics, fluid systems, EWIS, and adjacent mechanical systems.

Test and Validation: Define qualification and verification test plans, design test rigs, support instrumentation and data acquisition, and correlate analytical and computational models with test data.

Hardware and Supplier Execution: Author technical specifications and statements of work for thermal hardware, evaluate suppliers, and drive supplier technical execution through prototype build and test.

Qualification and Hardware Delivery: Define and execute qualification test plans per MIL-STD-810, using results to mature the design into production-ready hardware and support MIL-HDBK-516 Airworthiness Certification.

Technical Leadership: Communicate thermal findings through design reviews and technical reports, guide cross-disciplinary teams in applying thermal and fluid fundamentals, and influence vehicle-level thermal design decisions.

Required qualifications:

Clearance required: US Citizens Only & Must have an Active Secret or higher clearance.

Experience: 7 to 12 years of direct experience in aerospace thermal engineering, environmental control systems, or vehicle thermal and fluid system development.

Education: B.S. or M.S. in Mechanical Engineering, Aerospace Engineering, or a related technical discipline.

Core Fundamentals: Deep mastery of thermodynamics, heat transfer, and fluid dynamics applied to aircraft or defense systems.

Modeling and Analysis: Demonstrated capability with first-principles hand calcu …