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

Location: Stuttgart, Germany or Austin, United States

Company

hirify.global develops photonic processing systems that use light for scalable, energy-efficient AI and high-performance computing.

What you will do

• Specify, design, and simulate GHz-band analog and mixed-signal circuits, including TIAs, ADC/DAC front-ends, amplifiers, and PLLs.
• Optimize electrical-optical impedance matching, biasing, and signal conditioning for silicon photonic modulators, photodetectors, and waveguide interfaces.
• Develop and validate 2.5D/3D integration architectures using interposers and chiplets, including RF parasitic, TSV, and thermal co-simulation.
• Collaborate with ASIC designers on SerDes, CDR, and mixed-signal interface integration.
• Lead laboratory bring-up and characterization using oscilloscopes, VNAs, BERTs, and spectrum analyzers.
• Propose analog architectures and co-integration strategies that contribute to the photonic processor roadmap and IP portfolio.

Requirements

• M.S. or Ph.D. in Electrical Engineering, Physics, Microsystems Engineering, or a related technical field.
• At least 5 years of experience designing analog or mixed-signal circuits in the 1–20 GHz range.
• Strong command of SPICE/Spectre, ADS, HFSS, and S-parameter/EM co-simulation.
• Experience with high-speed PCB design, signal and power integrity analysis, and advanced packaging such as CoWoS or EMIB.
• Familiarity with Python or MATLAB for measurement automation and data analysis, plus experience defining reproducible test SOPs.
• Fluent English is required; German or another European language is a plus.

Nice to have

• Hands-on experience integrating electronics with silicon photonic or optoelectronic components, including modulators, photodiodes, or optical packaging.

Culture & Benefits

• Attitude-focused environment with opportunities to develop new skills.
• High level of self-responsibility, experimentation, and fast execution.
• Opportunity to contribute to photonic computing technology and next-generation computing systems.
• International, highly skilled, cross-functional team.
• Direct access to the company founders.