Thank you for exploring opportunities at Ribbit We look forward to speaking with you. Note: the Careers page is under maintenance; actual details and interview process may differ slightly Note: We read everything that comes our way. Let your outstanding résumé (cover letter and design portfolio encouraged but optional) do the talking. For important questions or comments, contact us at [email protected]. Company

Founded in 2020, Ribbit builds and operates autonomous airplanes. We develop technology that enables uncrewed gate-to-gate operations, having completed hundreds of autonomous flight hours on different aircraft, flown 10K+ hours in simulation, and secured flight authorities for remotely and optionally piloted flight. From defending sovereignty to delivering food and medical supplies, we are a trusted partner that businesses and governments rely on to test, operate, and deploy affordable autonomous aircraft. You can check out our videos here. We believe that technology should be developed for and with the customer. In 2023, we signed our first federal contract with the Government of Canada, during which we performed Canada’s first autonomous gate-to-gate flight between two airports. Since then, we won several additional contracts, including contracts with the National Research Council of Canada (NRC) and the Department of National Defence (DND) spanning platform, mission, and collaborative autonomy. We pride ourselves on knowing the customer better than themselves, serving them better than anyone else, and ensuring they succeed in a world with everyone else. This year alone, we performed the world's first demonstration of collaborative teaming between an autonomous airplane and an autonomous helicopter. We also deployed Canada's first optionally piloted aircraft with a military callsign.



We are now building novel autonomous aircraft for DND and Canada's allies, aligning our immediate defence clients with a backlog of interest across northern wholesalers, public safety agencies, freight forwarders, and humanitarian organizations. Autonomy is reshaping the way we move, understand, and protect the world. Our team has years of experience with piloting, commercial drone operations, and autonomous mobile robotics—we're concentrating the world's best software, robotics, and aeronautical expertise to pursue our mission of making air transportation accessible to everyone. If you’re up for the challenge, we want to hear from you. Position Overview

As a Senior State Estimation Engineer, you will collaborate with peers to: Lead development of the state estimation stack. You will shape its architecture and roadmap, lead design reviews, and hold the bar on code quality Research, design and develop the systems required for handling degraded or denied GNSS signals, ensuring a reliable aircraft state estimate when satellite navigation is jammed, spoofed, or unavailable Own the sensor suite deployed on our aircraft: from selection, calibration, time synchronisation, and health monitoring, to research into what new sensors the aircraft should carry next Stay hands-on: write production C++, review the handwritten code,



and prototype/compare various estimation and sensing approaches Deploy tools for analyzing and providing quality metrics of state estimates for downstream users, establishing what the estimator can provide and the extent to which its outputs can be trusted Represent the estimation team in design reviews with the navigation, controls, hardware, and flight-test teams Onboard and mentor junior engineers that join the team Your key objectives will include: Designing and implementing estimators that output the aircraft's state (e.g. EKF, error-state KF, UKF, factor-graph methods), including INS mechanisation,GNSS/INS integration Developing vision-based navigation that limits drift on long flights without GNSS, such as visual-inertial odometry, image-to-map matching, and landmark and runway detection Fusing a wide range of sensors: IMUs, multi-antenna GNSS, magnetometers, air data, barometric, radar and laser altimeters, cameras, and LiDAR Estimating wind, air data, and height above terrain accurately enough to support automatic takeoff, approach, flare, and landing Building fault detection and integrity monitoring into the estimator (e.g. innovation gating, cross-checks, jamming and spoofing detection, protection levels) Writing production C++ that runs in real time on the aircraft, tested against recorded flight logs, simulation, HIL, and flight Other Details

No. of Positions: 1 Duration: Permanent Full-Time, starting December 2026 Base Compensation: 153920 to 168480 This is a hybrid role involving work from home and on-site presence to support field tests—you must be in the Greater Toronto Area or willing to relocate Competitive and comprehensive compensation (e.g. 3 weeks of vacation upon joining, comprehensive health and wellness plans) You must be eligible to hold a Government o

📌 Senior Software/Robotics Engineer (Winnipeg)
🏢 Ribbit
📍 Winnipeg