York is seeking a Senior Flight Dynamics Engineer to lead the design, analysis, and on-orbit support of spacecraft flight dynamics and mission analysis across a range of commercial and national security missions. This individual will serve as a technical leader within the Flight Dynamics team, working across multiple programs to define subsystem architecture, develop algorithms and models, support verification and flight operations, and mentor junior engineers.     This role will be fully on-site in our Greenwood Village, CO office.   Responsibilities Develop and validate flight dynamics software partnering with mission operations, spacecraft subsystems, and software engineering teams to support mission design, on-orbit operations, and contract phases   Design and analyze constellation architectures, including orbital regimes, plane spacing, phasing strategies, and deployment concepts  Own mission and system level analysis ensuring space vehicle designs meet or exceed requirements across subsystems  Define and maintain high-fidelity simulation environments to support development of mission architecture and day in the life analysis for a variety of different missions  Lead development of mission concept of operations  Identify, create, and use available tools to model and analyze a given system’s performance and capability in relation to mission objectives  Perform trade studies for various mission designs to meet contact coverage, lifetime, regulatory requirements, and validate mission feasibility  Serve as the flight dynamics/mission analysis technical interface to systems engineering, flight software, avionics, mechanical, thermal, manufacturing, and mission operations teams to ensure mission objectives are understood and supported by product design  Prepare for and present at internal and customer design reviews as a flight dynamics subject matter expert  Support spacecraft mission operations, and anomaly investigation using telemetry and flight data during planning and execution phases  Provide technical direction and mentorship to junior engineers and contribute to the development of team processes, standards, and best practices    Required Qualifications Bachelor’s degree in aerospace engineering, computer science, physics or related technical field from accredited university  4+ years of experience in spacecraft GNC, mission analysis, orbit analysis, flight dynamics systems or similar (salary based on experience). Strong background in orbital dynamics, spacecraft subsystems, and their relation to each other   Demonstrated experience analyzing spacecraft dynamics, control theory, and propulsion performance for trajectory design and constellation geometry  Demonstrated ability to lead technical work across multiple disciplines and mentor junior engineers  Strong analytical, problem-solving, written, verbal, and presentation skills  Collaborative and effective in team environments  Proficiency with industry-standard tools such as STK, GMAT, or equivalent  Proficiency with Python software development  Able to obtain and maintain a U.S. security clearance; U.S. citizenship required   Preferred Qualifications  Master’s degree in aerospace engineering, computer science, physics or related technical field from accredited university  Experience with NASA ORDEM, NASA BUMPER, NASA DAS, NASA MEM3   Experience with implementing automation across simulation architectures  Familiarity with conjunction assessment approaches and collision avoidance workflows  Currently active security clearance