Principal Systems Engineer - Airborne NetworksSouthampton - 3-4 days a week on site 70 per hour (Inside IR35)Initial 6-Month Contract A cutting-edge opportunity has opened for a Senior or Principal Systems Engineer to support advanced research into the next generation of airborne mesh networks.This is a high-impact role where you will work closely with a team of engineers, subcontractors, and partners, shaping how networks are designed, simulated, and optimized for airborne communication systems. Key Accountabilities - + Conduct detailed research into novel approaches for network protocol design and routing algorithms.+ Specify and execute networking simulations using third-party tools or in-house platforms.+ Analyse and interpret data to inform design improvements.+ Support ongoing efforts to develop and propose networking standards. Skills and knowledge required - + Strong understanding of networking protocols - their layers, functions, design rationale, and alternatives.+ Ability to design meaningful experiments and analyse complex simulation data. Why this role? + Work within a highly collaborative and technically excellent team.+ Be part of exciting RandD into future-facing airborne communications technologies.+ Access continuous learning through mentoring, technical expertise, and structured development pathways. Whether you''re a seasoned systems engineer or an ambitious individual eager to contribute to transformative projects, we''d love to hear from you - even i