Your mission As an

Electronic Hardware Engineer , you will play a key role in designing and delivering robust electronic systems for space applications. You will be part of a multidisciplinary team and involved throughout the full development lifecycle, from early design concepts to production support, ensuring high reliability and performance in demanding environments.

Design, test, and validate multilayer PCBs for both high- and low-power systems using tools such as Altium, KiCad, or OrCAD

Develop and analyse power electronics, including DC/DC converters, DC/AC regulators, protection systems, and thermal management strategies

Design signal and low-power circuits for sensors, data acquisition, and embedded communication interfaces

Build, assemble, and debug electronic prototypes, performing detailed characterisation and validation

Prepare and maintain high-quality technical documentation, including schematics, test procedures, and verification reports

Support industrialisation and production phases, ensuring smooth transition to manufacturing

Collaborate cross-functionally with mechanical, software, and systems engineers to guarantee performance and reliability in space conditions

Your profile We are looking for a structured and detail-oriented engineer with a strong technical foundation and a passion for solving complex challenges.

A degree in Telecommunications Engineering, Electronics, or a related field (Master’s degree is a plus)

At least 2 years of experience in PCB design and electronic hardware development

Proven expertise in multilayer PCB design and EDA tools (Altium, KiCad, OrCAD)

Solid knowledge of power electronics, including conversion topologies, component sizing, and thermal management





Experience with low-power and signal electronics (e.g. amplifiers, ADCs/DACs, SPI, UART, CAN interfaces)

Understanding of high- and low-power coexistence challenges (EMC, noise, plane separation)

Experience integrating microcontrollers (STM32, ARM Cortex, or similar)

Hands‑on experience in prototype assembly, testing, and debugging

Strong ability to create and interpret technical documentation

It’s a plus if you also have:

Experience working under aerospace standards (ECSS, MIL-STD)

Familiarity with space qualification testing (thermal vacuum, vibration, radiation, shock)

Knowledge of space communication buses (SpaceWire, CAN, RS-422, MIL-STD-1553)

Previous experience in space or defence projects

You are:

Analytical and solution‑oriented, with high technical accuracy

Well‑organised and able to meet project milestones

A proactive team player with strong collaboration skills

Comfortable working in multidisciplinary and complex engineering environments

Clear and effective in communication and documentation

Why us?

Work on real space hardware

that will fly in orbit, not just simulations or papers

Be part of a fast‑growing European space startup

shaping the future of sustainable space operations

Hands‑on access to labs, test campaigns and cutting‑edge technology from day one

Join a highly collaborative, respectful and supportive team where knowledge is shared openly

Enjoy a great work environment that values trust, autonomy, learning and good energy at work

Strong 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

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📌 Electronic Hardware Engineer (Madrid)
🏢 Kreios Space
📍 Madrid