System Performance & Modelling Engineer (SATCOM)

Location: Hybrid work in Harwell, UK; Athens, Greece; Barcelona, Spain; or Porto, Portugal. Candidates must have the legal right to work in their chosen location.

Company

hirify.global develops end-to-end satellite missions and space-based data and connectivity services, including Earth observation, IoT connectivity, and secure communications.

What you will do

• Develop end-to-end simulation frameworks for link performance, constellation coverage, and network behaviour.
• Build high-fidelity models for capacity, latency, throughput, reliability, service continuity, and resource utilisation.
• Model interactions between orbital dynamics, air interfaces, payload performance, and network architecture.
• Perform stochastic analysis of latency, jitter, packet loss, and multi-hop communication scenarios.
• Analyse link budgets, propagation effects, power allocation, noise cascades, interference, attenuation, rain fade, and hardware ageing.
• Conduct architectural trade studies and support dynamic resource management, orchestration, resilience planning, and service optimisation.

Requirements

• Strong understanding of system-level modelling for satellite or advanced wireless communication systems.
• Experience developing and maintaining end-to-end simulation environments for complex communication networks.
• Proficiency with MATLAB, Simulink, Python, C++, or similar modelling and scripting tools.
• Knowledge of link budget analysis, including modulation, coding, propagation effects, and noise and power cascades.
• Understanding of latency, jitter, throughput, packet loss, stochastic modelling, resource management, scheduling, and optimisation.
• Awareness of orbital dynamics, radiometric analysis, slant-range attenuation, Power Flux Density considerations, and tools such as STK or Visualyse.

Culture & Benefits

• Work on space technology and satellite communications serving customers around the globe.
• Contribute to a mission focused on making space more accessible and solving real-world challenges.
• Join a diverse, ambitious, and supportive team.
• Submit the CV in English.