Careers

Attitude Determination and Control System SME – TS/SCI Clearance w/CI Poly Required

Location

Chantilly, VA

Job Description

Leffler Consulting is seeking an Attitude Determination and Control System SME to join our team in Chantilly, VA. Work will be performed on-site with the customer and requires an active TS/SCI clearance with an adjudicated polygraph.

Duties

• Provide expert advice on spacecraft attitude determination and control architectures, algorithms, sensors/actuators, and CONOPS across the full mission lifecycle (concept through on-orbit operations).
• Serve as an independent advisor to government program managers: review contractor designs, analyses, simulations, and test plans; identify risks and gaps; recommend mitigations.
• Support requirements development and verification for ACS subsystems, including performance, robustness, and fault-management requirements.
• Participate in design reviews (SRR, PDR, CDR), test readiness reviews, and anomaly resolution boards as the ACS technical authority.
• Analyze stability and robustness of guidance and control algorithms using control theory methods and Monte Carlo simulations.
• Independently assess contractor attitude control models, 6-DOF simulations, and performance predictions; provide red-team style reviews.
• Advise on sensor/actuator selection and placement (star trackers, IMUs, sun sensors, reaction wheels, CMGs, thrusters) and associated procurement specifications.
• Support on-orbit test planning, maneuver strategy, and ACS-related anomaly investigation, often coordinating across multiple contractors as a government technical lead.
• Perform other duties as assigned to support corporate initiatives.

Required Education

• A Bachelor of Science or Master of Science Degree in Engineering

Required Experience

• 10+ years in spacecraft attitude determination and/or control systems, with a deep guidance-navigation-control background
• Strong experience in control theory, state estimation, and numerical simulation (e.g., MATLAB/Simulink, Python, C/C++ tools) applied to spacecraft ACS
• Experience with national security space or civil space programs, with current TS/SCI and CI polygraph

Desired Education

• Refer to “Required Education”

Founded in 2001, Leffler Consulting is a women-owned small business (WOSB) headquartered in Chantilly, Virginia. We provide financial management and life-cycle budget and cost support to our nation’s most critical programs in the Intelligence Community (IC) and Department of Defense (DoD). Leffler Consulting specializes in all areas of financial management, audit readiness, and process improvement and controls while also providing a broad array of support functions critical to supporting the mission requirements of our customers. We offer competitive salaries and a generous benefits package, including medical, dental, vision, and disability coverage, paid leave, paid holidays, an employee assistance program, and an employee referral program.