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 15 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 Software Development team architects, develops, tests and maintains the Telesat Lightspeed System Model application, a state-of-the-art engineering software tool running on high performance computing (HPC) infrastructure for the modeling of resource allocation and end-to-end communication system performance analysis of the Telesat Lightspeed satellite constellation.
As a Senior Software Developer, the selected candidate, as a senior resource on the team, will participate actively in the software development, productization and maintenance of the Telesat Lightspeed System Model, a state-of-the-art engineering tool running on high performance computing (HPC) infrastructure for the modeling of resource allocation and end-to-end communication system performance analysis of the Telesat Lightspeed constellation. The selected candidate will work with the System Modeling team to efficiently integrate new algorithms and support the upgrade of existing algorithms.Main ResponsibilitiesParticipate in the software development of the System Model suite, to improve its fitness as an operational production engine for business applications running on an HPC infrastructure, within varied software development environments including C++, Java, Python, MATLAB and GO;Implement continuous improvements to the version control and release management system;Contribute to the configuration, tuning and optimization of the cluster job manager;Closely collaborate with other members of the Software Development team;Closely collaborate with other System Modeling team engineers developing System Model algorithms with an emphasis on efficiently integrating complex algorithms for fast execution, reliability and maintainability;Interface with other teams to successfully integrate the System Model into business applications as required; Write technical documentation.Make recommendations and have influence on the software design of the Telesat LightspeedEducation and Experience Required3- 6 years professional experienceBachelor's or Master's degree in Computer Science, Software Engineering, or a related field.Advanced coding skillsExperience in some of the following technologies: C/C++, Java, Python, Golang, Kafka, gRPC, Databases, SQL, Azure, etc.Experience with Matlab desirable including best practicesExperience with agile development Experience with cluster job managers Experience with cloud deployment of applications is an asset, but not mandatoryExperience with containerized computing is an asset, but not mandatoryExperience in satellite and/or communications systems is an asset, but not mandatory
Specialized Knowledge, Skills and Abilities:Creative problem-solver with thorough attention to detail;Highly collaborative team-player who can quickly earn the confidence of co-workers and teammates.Excellent oral and written communication skillsDemonstrated ability to communicate effectively with management, engineering teams and partners / suppliers.Experience with business considerations and practical limitations related to system design and implementation. Ability to prioritize opportunities, needs and resources.An aptitude for and interest in complex technology;Fluent in English, written and oral. French is an asset.
The successful candidate must be able to work in Canada and obtain clearance under the Canadian Controlled Goods program (CGP).
At 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.