Power Electronics Engineer

IENAI SPACE is an early-stage startup located in Madrid, developing an end-to-end ecosystem of in-space mobility products, including propulsion systems and engineering SaaS. We are a highly innovative company in the “New Space” sector; the team is made up of a dynamic and multidisciplinary group of engineers, PhDs and developers, looking to revolutionize space mobility for the adoption of propulsion products in the smallest of satellites. We recently kickstarted our commercial phase with our first product: 360™, a Mission and Space Mobility analysis SaaS.

Our mission is to build tailored, end-to-end space mobility products and services for the next generation of small satellites empowering a sustainable new space economy. We believe this is possible because we rely on our values: Infinite Innovation, Extraterrestrial Excellence, Planetary Passion and Cosmic Collaboration.

How will you contribute to IENAI SPACE?

As Power Electronics Engineer, your mission will be to develop and optimize high-voltage power electronics for the ATHENA Nano and Pico thrusters . Join our dedicated team as we work to refine this high-voltage converter into a robust, mature, and fully space-qualified device.

Your key responsibilities will include:

• Advanced design of switched-mode power supplies (SMPS): architecture definition, high-voltage design and optimization of thermal and electromagnetic performance.
• Simulation and analysis: use of advanced tools to model and simulate power circuits, parasitic effects and power integrity.
• Component selection: identify and select optimal components for performance, efficiency and reliability.
• PCB design: design multilayer PCBs using Altium Designer, with attention to high-voltage clearances, parasitics and planar transformer integration.
• Thermal and EMC design: perform thermal calculations, simulations and electromagnetic compatibility (EMC) pre-compliance testing.
• Testing setup and lab work: design, plan and execute complex in-house tests (thermal pre-qualification, EMC pre-compliance, etc.).
• Confident in EEE lab environments: circuit debugging, diagnostics and use of lab instrumentation (oscilloscopes, power analyzers, etc.).
• Skilled in SMD soldering and hands-on prototyping.
• Documentation and reporting: produce detailed technical reports, schematics, test documentation and progress updates.
• Collaboration: work closely with multidisciplinary teams to ensure integration with propulsion systems and mission requirements.

What is your department like?

You will be part of our Electrical Engineering and Electronics team , which is part of our Electric Propulsion department. This team is in charge of designing, testing, manufacturing and has the mission of continuous improvement of the electronic devices that enable thruster operation.

What will make you succeed?

We are looking for (must have):

• At least 5 years of experience in developing power electronics.
• Master’s degree in Power Electronics Engineering, or another degree with a strong focus on electronics development.
• Proven experience in designing switched-mode power supplies, high-voltage circuits and thermal/EMC design.
• Full proficiency with Altium Designer.
• Hands-on experience in Electronics labs (debugging, testing, instrumentation).
• Proficiency in SMD soldering.
• Basic knowledge of C/C++, Matlab/Python, and Arduino.
• Spoken and written professional proficiency in English.
• Fast learner, hands-on, autonomous, team player and proactive project contributor.

We also value (nice to have):

• Experience in environmental testing (thermal, vibration, radiation).
• Experience working in automotive or other high-reliability sectors.
• Experience performing FMECA analysis.

What do we offer?

• 🚀 A key role in a pioneering space startup, where you will directly impact the development of cutting-edge propulsion technology.
• 💼 A full-time contract of 40h per week.
• ⏰ Flexible working hours, allowing you to manage your schedule for better work-life balance.
• 🏠 Hybrid work model – work remotely up to 10 days per month.
• 🎄 Extra holidays – in addition to 23 vacation days , enjoy 6 additional days off during the Christmas period (from 24 December to 2 January, both included).
• 🩺 Private health insurance, fully covered by the company.
• 🎓 Learning & Development – €1000 per year budget for training, courses, and professional growth.
• 💪 Autonomy and responsibility – your contributions will directly shape our technology and success.

What will your recruitment process be like?

Here is a quick overview of the recruitment process:

1. Application review: we carefully assess your CV and experience.
2. Culture and values interview: a chat with our People team to ensure we share the same mindset and values.
3. Technical interview: meet the Tech Lead and showcase your technical skills.
4. Sometimes the hiring process will require a technical exercise to assess how you could apply logic and structure to different scenarios.
5. Final interview with Founders: align expectations and discuss your potential impact at IENAI SPACE.

If everything you've read matches what you're looking for in your next adventure, don't hesitate to apply via LinkedIn.

We are looking forward to meeting you ✨