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Senior RF / Analog Design Engineer (m/f/d)
Q.ANT GmbH —Stuttgart
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- Englisch
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Senior RF / Analog Design Engineer (m/f/d)

Q.ANT GmbH
Stuttgart

Direkt bewerben

Details zur Stelle

Vollzeit

Qualifikationen

MATLAB
Ant
Doktorat
Datenanalyse
Englisch
PCB
Master
Physik
Elektrotechnik
Python
Deutsch

Vollständige Stellenbeschreibung

Your mission

The future of AI computing is light, not electrons. Q.ANT is building photonic processing systems that compute with light – delivering a scalable, energy-efficient alternative to transistor-based architectures for next-generation AI and HPC applications.

As Senior GHz Analog & Mixed-Signal Engineer (m/f/d), you are the architect of the high-speed electronic signal paths in the GHz-range that make photonic computing real. You will design, simulate, and validate circuits that interface directly with cutting-edge silicon photonic devices, custom ASICs, and advanced 2.5D/3D interposer platforms. Working at the intersection of RF electronics, electro-optics, and semiconductor heterogeneous integration, you will turn individual high-performance components into unified, scalable subsystems.

Your Responsibilities

High-Speed Analog & Mixed-Signal Design: Specify, design, and simulate GHz-band circuits including TIAs, ADC/DAC front-ends, amplifiers, and PLLs – optimizing for noise, linearity, jitter, bandwidth, and power efficiency using tools such as SPICE, SpectreRF, and ADS.
Electronic-Photonic Co-Design: Define and optimize electrical-optical impedance matching, biasing, and signal conditioning for silicon photonic components including modulators, photodetectors, and waveguide interfaces.
Interposer & Advanced Packaging Integration: Develop and validate 2.5D/3D integration architectures using interposers and chiplets; co-simulate RF parasitics, TSV routing, and thermal behavior to ensure signal integrity across heterogeneous boundaries.
ASIC Collaboration: Partner with ASIC designers to define high-speed interface requirements and support SerDes, CDR, and mixed-signal block integration.
Lab Bring-Up & Validation: Lead hands-on characterization of electro-optic bandwidth, eye diagrams, jitter, noise spectra, and system-level behavior using oscilloscopes, VNAs, BERTs, and spectrum analyzers.
Innovation & IP Contribution: Propose novel analog architectures and co-integration strategies that push beyond conventional design limits, contributing to Q.ANT's IP portfolio and next-generation photonic processor roadmap.

Your profile

Educational Foundation: M.S. or Ph.D. in Electrical Engineering, Physics, Microsystems Engineering, or a related technical field.
Industry Expertise: 5+ years designing analog/mixed-signal circuits in the 1–20 GHz range, with strong command of SPICE/Spectre, ADS, HFSS, and S-parameter/EM co-simulation.
Electro-Optic Experience: Hands-on background integrating electronics with silicon photonic or optoelectronic components – modulators, photodiodes, optical packaging – is a strong advantage.
Packaging & SI/PI Know-How: Demonstrated experience with high-speed PCB design, signal and power integrity analysis, and advanced packaging concepts (CoWoS, EMIB, or similar).
Analytical Toolset: Familiarity with Python or MATLAB for measurement automation and data analysis; experience defining test SOPs for reproducibility.
Language: Fluent English required; German or another European language is a plus.

Why us?

We hire for attitude and train for skills.
We encourage self responsibility and accelerate professional development.
We move fast and encourage experimentation.
You have the opportunity to be part of developing breakthrough photonic computing technology and have a lasting impact on the future of computing.
You can be part of a passionate international, highly skilled cross functional team.
You will have access to the founders of the company.

About us

Who we are and what we do

Q.ANT is a deep-tech scale-up developing photonic processing solutions that compute natively with light and deliver a scalable alternative to transistor-based systems. The analog co-processors are optimised for complex computations and enable energy-efficient performance for next-generation AI and HPC applications. In collaboration with the Institute for Microelectronics Stuttgart IMS CHIPS, Q.ANT operates its own pilot line for photonic chips, based on the material system Thin-Film Lithium Niobate TFLN. Q.ANT was founded by Michael Förtsch in 2018 and is headquartered in Stuttgart, Germany.

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