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Shield AI is seeking a Senior Propulsion Performance Engineer to own engine calibration and performance for reciprocating engines powering the V-BAT autonomous aircraft platform. This is a hands-on technical role where you will serve as the technical owner for engine calibration strategy, driving test plans, ECU tuning, and performance analysis from bench through flight test. You will be accountable for torque, power, speed, and fuel efficiency characteristics across the full operating envelope.
Key responsibilities include:
- Define and support engine calibration strategy by creating test plans, calibration methodology, and acceptance criteria across dynamometer, bench, and flight test campaigns
- Perform ECU configuration and tuning (fuel mapping, ignition timing, injector phasing) to optimize engine performance, fuel efficiency, and reliability
- Analyze and deliver torque, power, and fuel consumption results, identifying calibration or hardware improvement opportunities
- Lead troubleshooting and root-cause investigations for engine testing across development and production teams
- Reduce and interpret test and flight data to validate performance against requirements
- Represent engine calibration and performance in design reviews, technical readiness checkpoints, and cross-functional discussions
- Develop and maintain calibration documentation, procedures, and performance reporting
- Support refinement of performance models through targeted test campaigns and data review
You will work hands-on with engine hardware, electronic fuel injection systems, engine control systems, and engine test stands, creating and executing testing strategies under the direction of senior staff propulsion engineers. Candidates with background in air-cooled or aviation two-stroke engines are especially encouraged.
REQUIREMENTS:
- Bachelor's degree in Mechanical Engineering, Aerospace Engineering, or related engineering discipline
- 5+ years of experience in mechanical or aerospace engineering role with focus on engine performance or calibration
- Deep hands-on experience with reciprocating (piston) engines
- Demonstrated experience with electronically controlled fuel injectors and fuel injection systems
- Proven experience with ECU configuration and engine calibration, including ownership of calibration decisions
- Strong ability to analyze and interpret engine torque, power, and fuel consumption data to drive design and performance decisions
- U.S. Citizenship or ability to comply with ITAR requirements
PREFERRED:
- Podium finish in FSAE competition with at least one first place trophy in dynamic event
- Background in air-cooled engines, particularly aviation two-stroke platforms
- Experience with dynamometer test cells and data acquisition systems
- Deep familiarity with fuel maps, ignition timing strategies, and closed-loop engine control logic
- Proficiency in Python or MATLAB for data reduction and calibration tooling
- Experience writing custom data analysis tools for engine performance analysis and calibration workflows
- Experience supporting military propulsion systems, tactical aircraft, or high-performance aerospace platforms
- M.S. or Ph.D. in Mechanical Engineering, Aerospace Engineering, or related discipline
