MDA is looking for a GNC engineer for the design, integration, verification, and operational support of GNC subsystems intended for our current and next-generation remote sensing and telecommunications satellites. The incumbent will design the complete subsystem, from algorithm development to hardware implementation, validation, and on-orbit support. The position requires in-depth expertise in orbital mechanics, attitude determination and control, as well as in the definition and integration of real-time embedded software; Establish functional and performance requirements (pointing accuracy, guidance, orbit maintenance ΔV, fault tolerance) based on mission requirements. Produce system requirements, interface control document (ICD), and design description. Perform requirements management and ensure bidirectional traceability throughout the project. Perform high-fidelity energetic simulations (Matlab/Simulink, STK) in order to satisfy pointing requirements, respect the error budget, ensure the stability of control laws, control fuel consumption, and guarantee survivability margins. Develop control laws for 3-axis stabilization, guidance maneuvers, and station-keeping algorithms. Validate scenarios and algorithms through Monte-Carlo analysis and SIL/HIL tests on avionics test benches. Present technical status, risk analyses, and comparative study results to program management. Specify sensors and actuators, define interfaces (electrical, mechanical, thermal) and redundancy. Work with structural and thermal engineers for vibration resistance, in compliance with payload requirements. Draft Verification Plans,



test matrices, and test procedures. Lead functional tests: sensor calibration, actuator-command response, closed-loop attitude control on avionics test benches, and commissioning sequences. Perform FMECA and reliability analyses. Technical Leadership & Mentoring Serve as the technical point of contact for clients, partners, and external suppliers. Participate in continuous improvement initiatives. Contribute to MDA's knowledge base, process improvements, and standards development. Configuration Management, Documentation Maintain GNC standards (sensor/actuator interfaces, filter design, control law documentation). Ensure that all artifacts, analyses, software, deliverables, and documents are version-controlled. Technical support to SatOps teams for monitoring satellite performance. update databases and capitalize on lessons learned (REX). Analyze telemetry and generate performance reports. Support SOOH development and operator training. in Electrical, Aerospace, or Physics Engineering (M.
Mastery of orbital mechanics, multiaxis control laws, Kalman filters. Strong writing skills and solid understanding of space engineering fundamentals. Hands-on profile: capable of supporting integration, testing, and troubleshooting processes. Ability to work autonomously with minimal supervision. Ability to break down complex problems into basic elements to solve them through analysis, analogy, or creativity. Excellent written and verbal communication skills in English (contact with clients outside Quebec and drafting deliverables in English). #

📌 Gnc Systems Engineer (Ste-Anne-de-Bellevue)
🏢 MDA
📍 Ste-Anne-de-Bellevue