Senior GHz Analog & Mixed-Signal Engineer (m/f/d)

Q.ANT; Stuttgart; Vor Ort; EUR 90.000 - 140.000; Vollzeit

Zusammenfassung

Q.ANT in Stuttgart is seeking a Senior GHz Analog & Mixed-Signal Engineer to design, simulate, and validate high-speed circuits interfacing with silicon photonics, custom ASICs and advanced interposers. You will own analog/mixed-signal paths in the 1–20 GHz range, optimize noise, jitter and linearity, and collaborate with RF, electro‑optics and packaging teams to advance photonic processing technology.

Join a cross‑functional team that values hands-on lab bring‑up, IP contribution, and rapid

Qualifikationen

• MS or PhD in Electrical Engineering, Physics, Microsystems Engineering, or a related field.
• 5+ years designing analog/mixed-signal circuits in the 1–20 GHz range with SPICE/Spectre, ADS, HFSS and EM co-simulation.
• Hands-on experience integrating electronics with silicon photonics or optoelectronic components is a plus.

Aufgaben

• High-Speed Analog & Mixed-Signal Design: GHz circuits, TIAs, ADC/DAC front-ends, PLLs; optimize noise, jitter and bandwidth.
• Electronic-Photonic Co-Design: impedance matching and signal conditioning for silicon photonic components.
• Interposer & Advanced Packaging Integration: 2.5D/3D architectures and RF parasitics analysis.
• ASIC Collaboration: define high-speed interface requirements and SerDes support.
• Lab Bring-Up & Validation: characterize bandwidth, eye diagrams, noise spectra, and system behavior.
• Innovation & IP Contribution: propose novel analog architectures for photonic processors.

Kenntnisse

Analog design

Mixed-signal design

GHz-range circuits

SPICE/Spectre

ADS

EM co-simulation

RF engineering

Python/MATLAB

English language

Ausbildung

MS/PhD in Electrical Engineering or related

Tools

SPICE

SpectreRF

ADS

HFSS

S-parameter EM co-simulation

Jobbeschreibung

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.