Satellite systems engineers specialise in design, test, and operational phases of satellite missions. They work on payload integration, RF communications, TT&C systems, link budgets, antenna design, power subsystems, attitude control, and thermal management. They perform environmental tests, vibration tests, and in-orbit performance monitoring. They collaborate closely with launch providers, mission control centres, and regulatory bodies. As Earth observation, communication satellites, and mega-constellations expand, satellite engineers are in high global demand.