Telesat (NASDAQ and TSX: TSAT) is a leading global satellite operator, providing reliable and secure satellite-delivered communications solutions worldwide to broadcast, telecommunications, corporate and government customers for over 50 years.  Backed by a legacy of engineering excellence, reliability and industry-leading customer service, Telesat has grown to be one of the largest and most successful global satellite operators. Telesat Lightspeed, our revolutionary Low Earth Orbit (LEO) satellite network, scheduled to begin service in 2027, will revolutionize global broadband connectivity for enterprise users by delivering a combination of high capacity, security, resiliency and affordability with ultra-low latency and fiber-like speeds. Telesat is headquartered in Ottawa, Canada, and has offices and facilities around the world. The company’s state-of-the-art fleet consists of 14 GEO satellites, the Canadian payload on ViaSat-1 and one LEO 3 demonstration satellite.  For more information, follow Telesat on X and LinkedIn or visit

Our Lightspeed System Engineering team defines the performance required of all RF elements in the entire satellite communication system. As a RF Systems Engineer, you’ll be responsible for simulating and modeling the terrestrial and in-orbit communication systems for Lightspeed and support the definition of the architecture.Main Responsibilities Simulate and model communication systems Work with system architects, RF engineers, antenna engineers, User Terminal and Landing Station engineers, to partition functions between hardware and software domains Model RF link performance and manage link budgets accounting for impairments through the different elements in the systemDerive specifications for RF links and RF and antenna subsystemsCharacterize and analyze system performance. Develop and maintain performance budgets Provide technical support to regulatory, coordination, and market access teams Education & Experience RequiredBachelor's degree in electrical engineering with emphasis in RF/microwave circuits or communication theory At least 5 years of relevant experience RF communication systems Knowledge of digital communication systems, spread spectrum, single and multi-carrier techniques, modulation types such as PSK, APSK, QAM Specific experience with modulation standard such as DVB-S2X and DVB-RCS2, as well as with Adaptive Coding and Modulation (ACM) methods Good experience in MATLAB or other tools for modeling and analyzing RF communication systemsSpecialized Knowledge, Skills & AbilitiesExperience performing analysis and simulation of communication systems Thorough understanding of RF passive and active components Good understanding of active antenna beam forming technologies including digital beam forming, and fast beam hoppingExperience characterizing radio performance at microwave frequencies, including rain fade and its effects on the communication links Knowledge of RF transceiver architectures and digital communication theoryWorking Conditionsnormal office environment laboratory environment possible occasional travel to suppliersAt Telesat, we take pride in being an equal opportunity employer that values equality in the workplace.   We are committed to providing the best candidate experience possible including any required accommodations at every stage of our interview process.   All qualified applicants that have been selected for an interview that require accommodations, are advised to inform the Telesat Talent team accordingly.  We will work with you to meet your needs.   All accommodation information provided will be treated as confidential.