RF / Microwave Engineer (m/w/d)

ZeroPhase GmbH; München; On-site; EUR 70,000 - 100,000; Full time

Job summary

ZeroPhase GmbH in Munich seeks an experienced RF engineer to design and validate high‑frequency front‑end circuits for next‑generation datalink platforms. You will work with antenna, DSP, mechanical, and software teams to deliver robust RF subsystems.

The role focuses on circuit design, system analysis, hands‑on lab validation, and automated test development in a fast‑paced engineering environment.

Qualifications

• Bachelor's degree in electrical engineering, physics, or 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 fundamentals.
• Experience with RF test equipment (VNA, spectrum analyser, signal generator, power meters).
• Experience with RF simulation tools such as ADS, AWR, or similar.

Responsibilities

• Design and simulate RF front-end circuits across RF and microwave bands.
• Develop PA stages, LNAs, mixers, filters, and PLLs.
• Perform RF cascade analysis: gain, noise figure, linearity, stability, dynamic range.
• Conduct link budget analysis and support system RF performance optimisation.
• Create circuit and system-level simulations using RF design tools.
• Design schematics and assist PCB layout for HF circuits.
• Collaborate to integrate RF subsystems into datalink systems.
• Develop validation and production test methodologies for RF hardware.
• Lab characterisation using network analysers, spectrum analysers, signal generators, etc.

Skills

RF circuit design

Impedance matching

S-parameters

Noise figure

RF system fundamentals

Education

Bachelor's degree in electrical engineering

Tools

ADS

AWR

VNA

Altium

Job description

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 working in datalink or high-reliability communication systems.

How the hiring process works

• Intro call. 30 minutes with our recruiting team. We'll learn about your background, and you'll learn about the mission.
• Deep dive. A working session with one of our RF engineers on a real circuit or link-budget problem.
• 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.
• 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.