WHO ARE WE? Sateliot is a Barcelona-based startup in the New Space sector, becoming the first satellite telecommunications operator that will provide global and continuous connectivity to all the elements that will make up the massive Internet of Things (IoT) universe under the 5G protocol. In order to do so, Sateliot is launching a constellation of last generation nanosatellites, located at low altitude that act as mobile towers. Sateliot is the perfect complement for large telecommunications companies by providing them with the necessary infrastructure where terrestrial technologies do not arrive. YOUR MISSION Sateliot is seeking an experienced Principal Antenna Product Engineer to lead the end‑to‑end development of an advanced antenna array for space applications. The successful candidate will take full ownership of the product lifecycle—from concept definition through design, simulation, prototyping, fabrication, testing, qualification, and flight readiness. This role requires deep expertise in antenna engineering for the space environment, including materials selection, lightweight and semi‑rigid structures, and deployable antenna systems. The adecuado candidate combines strong analytical rigor with first‑principles thinking, and a pragmatic, goal‑oriented approach focused on delivering flight‑ready hardware within program constraints. Antenna design must be carried out in tight coordination with mechanical and thermal constraints, ensuring structural integrity, thermal stability, and manufacturability from the earliest design phases. The candidate will work closely with a senior mechanical engineer to ensure seamless RF‑structural integration and optimized system performance.



Your Main Functions Technical Leadership & Product Ownership Lead the architectural definition and technical roadmap of advanced antenna arrays for space applications. Own the antenna system from concept to design for manufacture, qualification, testing and flight readiness. Translate mission and system requirements into robust antenna design solutions. Apply first‑principles thinking to challenge assumptions and drive optimal, physics‑based solutions. Maintain a pragmatic and goal‑oriented mindset, balancing performance, cost, schedule, risk, and manufacturability. Antenna Design & Simulation Design high‑performance antenna arrays (e.g., phased arrays, reflectarrays, patch arrays, deployable architectures). Perform full‑wave electromagnetic simulations (CST, HFSS, FEKO or equivalent). Design antennas considering: Mechanical constraints (stiffness, launch loads, vibration, deployment reliability) Thermal constraints (thermal gradients, expansion, cycling, distortion effects) Mass optimization and structural integrity Manufacturability and assembly constraints Optimize radiation performance, efficiency, bandwidth, polarization, and thermal stability. Make data‑driven decisions grounded in electromagnetic fundamentals while ensuring structural and thermal robustness. Space Environment & Materials Select And Qualify Materials Considering Radiation tolerance Thermal cycling Outgassing (ECSS/NASA compliance) Vacuum compatibility Mechanical strength‑to‑weight ratio Lightweight & Deployable Structures Lead the development of lightweight,



semi‑rigid antenna structures. Contribute to or drive deployable antenna concepts and structural integration strategies. Collaborate closely with the senior mechanical engineer to co‑design RF and structural elements from early concept stages. Ensure RF performance stability under mechanical stress, thermal cycling, and deployment dynamics. Prototyping, Design to manufacture, & Fabrication Oversee prototype development, including PCB‑based RF structures, waveguide assemblies, and hybrid solutions. Define fabrication tolerances, inspection criteria, and manufacturing workflows. Ensure the design is optimized for repeatability, scalability, and production efficiency. Interface with suppliers and manufacturing partners. Drive iterative prototyping cycles with a practical, solution‑oriented approach. Testing & Qualification Define and execute RF validation campaigns (anechoic chamber, near‑field/far‑field measurements). Support environmental qualification (vibration, thermal vacuum, shock, radiation). Correlate EM simulations with structural and thermal behaviour. Analyse test data rigorously and implement corrective design improvements. Deliver test requirements and test reports. Lead qualification documentation and technical reviews. Cross‑Functional Collaboration Work closely with the senior mechanical engineer to ensure fully integrated RF‑mechanical‑thermal co‑design. Interface with systems, thermal, manufacturing, and mission engineering teams. Support system integration and mission readiness reviews. REQUIREMENTS Master’s or PhD in Electrical Engineering, Electromagnetics, RF Engineering, or related field. 8+ years of experience in antenna design. Proven experience delivering antenna systems from concep

📌 PRINCIPAL ANTENNA PRODUCT ENGINEER (Barcelona)
🏢 Sateliot
📍 Barcelona