Systems Security Architect

Working for Open Cosmos

Aim high, go beyond! At Open Cosmos we are solving the world’s biggest challenges from space, providing businesses, governments and researchers access to more readily available information than ever before - ready for the challenge? Then read on…

Working in the Satcoms Systems Team

The satcoms systems team is responsible for modelling, simulating, and continuously optimising the performance of Open Cosmos’ satellite communication infrastructure. This includes the space segment, inter-satellite links, terminals, and ground connectivity, ensuring our end-to-end systems deliver reliable, efficient, and scalable service under dynamic conditions.

We work with cutting-edge technologies such as digital twins, autonomous networks, and large-scale constellation models. The team plays a key role in design validation, mission planning, and performance-driven engineering decision-making.

What will you be doing?

As Systems Security Architect, you will lead the design and assurance of secure architectures across Open Cosmos’ Satcom infrastructure, covering satellites, payloads, networks, ground systems, and user interfaces. Acting as the link between cybersecurity and satellite systems, you’ll ensure the company delivers secure-by-design products and services.

You’ll collaborate with engineering teams to integrate encryption, key management, secure updates, and anti-jamming measures into the stack, shaping the security of next-generation Satcom services, including dual-use and defence-grade systems. Your responsibilities will also include threat modelling, ensuring compliance with standards like ISO 27001 and NATO frameworks, and leading internal security reviews and audits—supporting programs that demand high trust and resilience.

What you need to be successful

To succeed in this role, you will need:

• A strong background in systems or cybersecurity engineering, with a focus on secure architecture and communications.
• Demonstrated expertise in securing embedded systems, space systems, or critical infrastructure.
• Solid understanding of satellite systems, RF communications, network protocols, cryptography, and secure key management.
• Direct involvement in threat modelling, security architecture design, and risk mitigation using methods like STRIDE or attack trees.
• Familiarity with security certifications, standards, and frameworks such as ISO 27001, NIST SP 800-53, and EU/NATO INFOSEC, along with delivering compliant solutions.
• The ability to collaborate effectively across engineering, product, customer, and compliance teams.