Job Description

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
Telesat's System Modeling team architects, develops, and maintains the Lightspeed System Model-an advanced engineering software platform running on high-performance computing (HPC) infrastructure. This tool enables resource allocation modeling for Lightspeed operations and end-to-end performance evaluation of the Telesat Lightspeed satellite constellation.
As a System Engineering Specialist, you will help lead the technical direction of the Lightspeed System Model. You will contribute to the development and integration of sophisticated algorithms, guide performance assessments, and influence architectural decisions that drive the success of the constellation. You will also mentor engineering teams and collaborate across departments to ensure technical alignment with system requirements and seamless integration into the overall Lightspeed system.
Main Responsibilities

• Take ownership of the design, development, and validation of advanced algorithms in MATLAB to optimize system performance and reliability while meeting system requirements.
• Oversee performance analysis of the Lightspeed constellation, including throughput, latency, satellite handover, availability, capacity, and regulatory compliance metrics.
• Drive cross-functional collaboration with System Modeling, Software Development, Quality Assurance, and System Engineering teams to ensure seamless integration and testing.
• Provide technical leadership and mentorship to junior engineers, fostering innovation and continuous improvement.
• Interface with other Telesat teams regarding topics such as satellite payload and ground segment characteristics, definitions of performance metrics, performance evaluations, and regulatory compliance.
• Lead trade-off studies and system architecture evaluations, contributing to long-term planning and system evolution.
• Author and review high-quality technical documentation.
• Follow Agile software development methodologies.
• Ensure code quality through unit testing, refactoring, and adherence to coding standards.

Education and Experience Required

• Bachelor's or Master's degree in Electrical Engineering, System Engineering, Aerospace Engineering, or a related field.
• Experience in related system design and modeling roles, with a minimum of 10 years in similar roles.
• Strong understanding of software development lifecycle, Agile methodologies, and CI/CD tools.
• Proven expertise in MATLAB and algorithm development.
• Experience with Java is an asset.
• Experience with HPC environments and cluster job managers is an asset.
• Knowledge of radio communication systems and/or satellite communication is desirable.
• Experience in mathematical optimization including linear programming is desirable.

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 communication, leadership, and stakeholder engagement skills.
• Ability to prioritize opportunities, needs and resources
• An aptitude for and interest in complex technology
• Fluent in English, written and oral. French is an asse

The successful candidate must be able to work in Canada and obtain clearance under the Canadian Controlled Goods program (CGP).
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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.

Skills Required