Security System Architect

Telesat, Ottawa, Ontario

The role

We are seeking an experienced and highly motivated Security System Architect to secure next-generation satellite systems and support ground infrastructure. Reporting to the Senior Director, System Architecture and Release Train, you will lead the integration of cybersecurity across the product lifecycle, ensuring security is embedded from concept and design through deployment and operations.

As a member of the System Architecture team, as the Security Champion you will work closely with Segment Domain Architects, engineering teams, and Product Cybersecurity stakeholders to ensure cybersecurity requirements are effectively incorporated into system architectures and product designs. Acting as the bridge between system architecture and cybersecurity, you will champion secure-by-design principles, assess cyber risks, and guide architectural decisions that enhance the resilience and security of space, ground, network, and cloud-based systems.

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Security System Architect

Telesat, Ottawa, Ontario

The role

What you will do

Key Responsibilities

A system architect with a deep hands-on understanding of development processes and the ability to enhance them to easily identify security risks within the products and remediate or mitigate the risks without compromising functionality and performance.

For satellite, ground segment, network, and cloud-based systems, define and maintain

common cybersecurity development architecture,
assist in translating security requirements into actionable items for the development teams,
ensure that the development teams have a consistent understanding of the required security paradigms, and can consider them at the needed development stages,
develop guidelines on best adoption practices and design principles in response to guidance from Product Cybersecurity and Governance, Risk and Compliance teams.
Act as a bridge between the development teams and the cybersecurity team. Partner with Segment Domain Architects to integrate security requirements into end-to-end system architectures and technical roadmaps.
Lead threat modeling, security risk assessments, and architecture reviews throughout the product lifecycle.
Evaluate vulnerabilities, support remediation efforts, and assess the effectiveness of implemented security controls.
Implement security verification strategies and review results from penetration testing, code analysis, fuzzing, and other security assessments.
Support DevSecOps practices and integration of automated security tooling into development and CI/CD pipelines.
Support the Operations teams in development of security monitoring, incident response, and recovery strategies for mission-critical systems.
Support technical interactions with customers, partners, and vendors on cybersecurity-related topics.

What Success Looks Like

Security is embedded into all major architectural and design decisions from concept through to deployment.
Mission-critical satellite and ground systems are designed with resilience against evolving cyber threats.
Engineering teams consistently adopt secure-by-design and DevSecOps practices.
Security requirements are effectively balanced with operational performance, mission objectives, and delivery timelines.
The organization maintains a cost-effective, strong security posture while enabling innovation across next-generation space systems.

Organizational Impact This role serves as the cybersecurity architectural authority for satellite payload and ground system development, ensuring that security is treated as a foundational design requirement and strategic differentiator. Acts as a bridge between the Product cybersecurity team and the development teams. The Security System Architect will play a critical role in protecting mission integrity, safeguarding customer trust, and enabling secure growth of the organization's space and communications capabilities.

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

Security System Architect

The role

Security System Architect

The role

What you will do

Key Responsibilities

For satellite, ground segment, network, and cloud-based systems, define and maintain

What Success Looks Like

What you need

Education & Experience

Knowledge, Skills & Abilities

About Telesat

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