Your missionAs an RF Engineer, you will contribute to the development of Kreios Space’s electric propulsion systems for Very Low Earth Orbit (VLEO).Your mission will be to support the design, simulation, assembly and testing of RF and microwave antennas used in our air-breathing plasma thrusters, helping transform advanced research into robust, flight-ready hardware.You will work closely with propulsion, plasma physics and systems teams in a hands-on environment, contributing to laboratory testing, data analysis and design iterations.Your profileDegree inElectrical Engineering, Telecommunications, Physicsor a related fieldBackground inRF/microwave engineering or antennas, gained through professional experience, research or academic projectsStrong interest inspace technologies, electric propulsion and experimental workComfortable working in a laboratory environment and interacting with hardwareFluent inEnglishWe are open to candidates at different levels of experience. The role and responsibilities can be adapted based on seniority.Specific KnowledgeRF and microwave fundamentals (impedance matching, S-parameters, antennas)Experience withelectromagnetic simulation tools(HFSS, CST, COMSOL or similar)Hands-on experience withRF measurement equipment(VNA, spectrum analyzer, signal generator, power meters)Ability to supportantenna tuning,



RF testing and post-processing of measurement dataBasic programming or scripting skills ( Python, MATLAB or similar )Knowledge of plasma systems, EMC/EMI or space hardware is considered a plusInterpersonal SkillsCurious and proactive, with a strong learning mindsetMethodical and detail-oriented, especially in experimental and test environmentsComfortable collaborating within multidisciplinary engineering teamsClear communicator, able to document and explain technical workAdaptable and resilient in a fast-moving startup contextPositive attitude, constructive sense of humor and ability to contribute to a healthy, enjoyable work environmentWhy us?Work on real space hardwarethat will fly in orbit, not just simulations or papersBe part of afast-growing European space startupshaping the future of sustainable space operationsHands-on access to labs, test campaigns and cutting-edge technology from day oneJoin a highly collaborative, respectful and supportive team where knowledge is shared openlyEnjoy agreat work environment that values trust, autonomy, learning and good energy at workStrong technical growth path in a scaling company, where your work has visible impact and you actively help shape both the technology and the way we work#J-18808-Ljbffr

📌 Rf Engineer (Madrid)
🏢 Kreios Space
📍 Madrid