# Senior RF / Analog Design Engineer (m/f/d) at Q.ANT > Open job at Q.ANT in Stuttgart, Germany. Workplace: On-site. Source: Germany Dev Jobs, https://germanydevjobs.com/jobs/q-ant-senior-rf-analog-design-engineer-m-f-d-b8sq28h Posted 16 May 2026. Last checked on the employer's career site: 11 November 2026. ## Facts - Company: [Q.ANT](https://germanydevjobs.com/companies/q-ant) - Location: Stuttgart, Germany - Workplace: On-site - Employment type: Full-time - German: Not required - English: Fluent - Skills: Python - Not mentioned in the job post: salary, visa sponsorship, relocation, where you can apply from ## Job description #### 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. ## How to apply Apply on the job page, https://germanydevjobs.com/jobs/q-ant-senior-rf-analog-design-engineer-m-f-d-b8sq28h: its Apply button opens the employer's own application page. ## More jobs from Q.ANT - [Senior Photonic Engineer – Electro-Optic Modulator Design (TFLN) (m/f/d)](https://germanydevjobs.com/jobs/q-ant-senior-photonic-engineer-electro-optic-modulator-design-tfln-rlqotdl): Q.ANT, Stuttgart, Germany. On-site. Posted 15 October 2026. - [Senior Integrated Photonics Packaging Engineer (m/f/d)](https://germanydevjobs.com/jobs/q-ant-senior-integrated-photonics-packaging-engineer-m-f-d-1my1um2): Q.ANT, Stuttgart, Germany. On-site. Posted 9 October 2026. - [Native Processing Server Engineer (m/f/d)](https://germanydevjobs.com/jobs/q-ant-native-processing-server-engineer-m-f-d-xzieqid): Q.ANT, Stuttgart, Germany. On-site. Posted 30 July 2026. - [Senior Integrated Photonics Packaging Engineer (RF) (m/f/d)](https://germanydevjobs.com/jobs/q-ant-senior-integrated-photonics-packaging-engineer-rf-m-f-d-pnbevll): Q.ANT, Stuttgart, Germany. On-site. Posted 22 July 2026. - [Senior Integrated Photonics Packaging Engineer (Photonics)](https://germanydevjobs.com/jobs/q-ant-senior-integrated-photonics-packaging-engineer-photonics-az7i52f): Q.ANT, Stuttgart, Germany. On-site. Posted 22 July 2026.