RF / Microwave Engineer (m/w/d)

ZeroPhase

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As an RF/Microwave Engineer, you will design, simulate, prototype, and validate RF front-end circuits for high-performance datalink systems operating in sub-6 GHz and microwave frequency bands. You will develop signal chain architectures including power amplifiers, low-noise amplifiers, mixers, filters, and frequency synthesis stages.

About the role

Join our engineering team to develop advanced RF subsystems for next-generation datalink platforms. You will focus on RF circuit design and system integration, working closely with antenna, DSP, mechanical, and software teams to deliver high-performance communication hardware.

This role combines circuit design, system-level analysis, hands-on lab validation, and automated test development in a fast-paced engineering environment.

What you'll do

• Design and simulate RF front-end circuits across RF and microwave frequency bands.

• Develop power amplifier stages, low-noise amplifiers, mixers, filters, and frequency generation circuits.

• Perform RF cascade analysis, including gain, noise figure, linearity, stability, and dynamic range.

• Conduct link budget analysis and support system-level RF performance optimisation.

• Create circuit-level and system-level simulations using industry-standard RF design tools.

• Design schematics and support PCB layout for high-frequency circuits.

• Collaborate with cross-disciplinary teams to integrate RF subsystems into complete datalink systems.

• Develop validation and production test methodologies for RF hardware.

• Perform lab characterisation using network analysers, spectrum analysers, signal generators, and related instrumentation.

What we're looking for

• Bachelor's degree in electrical engineering, physics, or a related discipline.

• 3+ years of industry or research experience in RF/microwave circuit design.

• Experience designing RF signal chain components such as PAs, LNAs, mixers, filters, or PLLs.

• Strong understanding of impedance matching, S-parameters, noise figure, linearity, stability, and RF system fundamentals.

• Experience with RF test equipment (VNA, spectrum analyser, signal generator, power meters).

• Experience with RF simulation tools such as ADS, AWR, or similar.

Bonus: not required

• Experience designing high-linearity or high-efficiency power amplifiers.

• Experience with RF system-level modelling and link analysis.

• Familiarity with digital modulation schemes (QPSK, QAM, APSK) and their RF implications.

• Experience with PCB schematic and layout tools (Altium or equivalent).

• Experience developing automated RF test solutions.

• Experience working in datalink or high-reliability communication systems.

How the hiring process works

1. Intro call. 30 minutes with our recruiting team. We'll learn about your background, and you'll learn about the mission.
2. Deep dive. A working session with one of our RF engineers on a real circuit or link-budget problem.
3. Case study, in Munich. A visit to the lab to walk through an RF design scenario with the team, in person if you can make it or over Teams if you can't.
4. The offer. By now you've likely already met our CEO. This round is where we make it official: fast, transparent, and built around the mission.