Verification & Validation Engineer

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…

The Satcom 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.

As a Verification & Validation Engineer, you will ensure Satcom systems meet mission-critical requirements through continuous, automated validation embedded into agile delivery.

You will:

• Translate high-level system requirements into automated tests that run continuously within our CI/CD pipelines.
• Contribute to agile planning and refinement, defining testable acceptance criteria before features are implemented.
• Develop complex validation scenarios incrementally, aligned with evolving system capabilities.
• Write robust, reusable Python test code using internal automated test frameworks to validate complex system behaviour.
• Execute automated tests seamlessly across Software-in-the-Loop (SIL) and Hardware-in-the-Loop (HIL) environments.
• Investigate and debug failed tests, working directly with engineers to resolve issues within sprint cycles.
• Maintain automated performance and regression test suites, identifying degradations in throughput, latency, or stability immediately after release.
• Collaborate with the Test Automation Framework team to evolve testing tools, improving test creation, execution, and debugging workflows.
• Contribute to the continuous improvement of verification practices, metrics, and tooling across Satcom.

• Strong understanding of system verification and validation within agile delivery environments.
• A clear grasp of shift-left testing and continuous verification principles.
• The ability to translate system-level requirements into clear, automated, and verifiable tests.
• Confidence building automated system and integration tests in Python.
• Understanding of complex, distributed technical systems and how failures propagate across them.
• Familiarity with SIL and HIL validation environments.
• Structured, analytical approaches to debugging test failures and identifying root causes.
• Ownership of automated performance, regression, and stability testing.
• Familiarity with CI/CD pipelines and automated test execution.
• A collaborative approach to improving test frameworks, tools, and validation workflows.

This role will be based in the UK or Spain.

To apply, you must have the legal right to work in this location.

When applying, please submit your CV in English.

• Work at the cutting edge of space technology with customers around the globe.
• A mission-driven company making space accessible to help solve real-world challenges.
• A diverse, ambitious, and supportive team.