• Developing and optimising PHY and MAC layer functionality for satellite communication systems
• Defining and validating random access, scheduling, timing advance, and resource allocation mechanisms
• Designing algorithms to mitigate LEO-specific challenges including Doppler effects, latency, and mobility constraints
• Building and maintaining link-level simulation environments using MATLAB, Simulink, or Python
• Supporting waveform, numerology, and frame structure definition aligned to 3GPP NTN and DVB-S2X standards
• Developing and validating link adaptation strategies including ACM and CSI-driven optimisation
• Defining and governing interface specifications across critical access layer subsystems
• Leading rapid prototyping activities using SDR platforms and system-in-the-loop validation environments
• Designing and executing verification scenarios for mobility, handover, BER, and throughput performance
• Working closely with architects and multidisciplinary engineering teams to bridge system design and implementation

What You’ll bring

• Strong capability in wireless PHY and MAC layer design within satellite or high-performance communication systems
• Deep understanding of L1/L2 protocols including random access, scheduling, timing advance, and resource allocation
• Strong knowledge of 3GPP NR standards (TS 38.211–38.321) and familiarity with DVB-S2X
• Advanced modelling and simulation capability using MATLAB, Simulink, or Python
• Strong grounding in Digital Signal Processing including synchronisation, forward error correction, and multi-user detection
• Knowledge of waveform design, numerology, and frame structure validation
• Strong understanding of link adaptation techniques including ACM and CSI-driven optimisation
• Familiarity with SDR platforms such as USRP or GNU Radio and rapid prototyping workflows
• Understanding of LEO satellite communication challenges including Doppler, propagation delay, and mobility management
• A highly analytical and structured approach to problem-solving, performance optimisation, and system validation

This role will be based in any of our locations.

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

When applying, please submit your CV in English.

Why Open Cosmos?

• 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