Senior RF / Analog Design Engineer (m/f/d)

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{
  "id": "2635736",
  "name": "Senior RF / Analog Design Engineer (m/f/d)",
  "office": "Stuttgart",
  "keywords": [],
  "schedule": "full-time",
  "createdAt": "2026-05-15T22:05:32+00:00",
  "seniority": "experienced",
  "department": "Hardware",
  "occupation": "electrical_and_electronics_engineering",
  "subcompany": null,
  "employmentType": "permanent",
  "jobDescriptions": [
    {
      "name": "Your mission",
      "value": "<div style=\"font-style:normal;font-weight:400;text-transform:none;color:rgb(0,0,0);\"><div><p>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.</p></div></div><div style=\"font-style:normal;font-weight:400;text-transform:none;color:rgb(0,0,0);\"><div><p>As <strong>Senior GHz Analog & Mixed-Signal Engineer (m/f/d)</strong>, you are the architect of the high-speed electronic signal paths in the <strong>GHz-range</strong> 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 <strong>RF electronics, electro-optics, and semiconductor heterogeneous integration</strong>, you will turn individual high-performance components into unified, scalable subsystems.</p><br></div><p style=\"font-style:normal;font-weight:400;text-transform:none;color:rgb(0,0,0);\"><strong><span style=\"font-size:14px;\">Your Responsibilities</span></strong></p><ul style=\"font-style:normal;font-weight:400;text-transform:none;color:rgb(0,0,0);\"><li><strong>High-Speed Analog & Mixed-Signal Design:</strong> 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.</li><li><strong>Electronic-Photonic Co-Design:</strong> Define and optimize electrical-optical impedance matching, biasing, and signal conditioning for silicon photonic components including modulators, photodetectors, and waveguide interfaces.</li><li><strong>Interposer & Advanced Packaging Integration:</strong> 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.</li><li><strong>ASIC Collaboration:</strong> Partner with ASIC designers to define high-speed interface requirements and support SerDes, CDR, and mixed-signal block integration.</li><li><strong>Lab Bring-Up & Validation:</strong> Lead hands-on characterization of electro-optic bandwidth, eye diagrams, jitter, noise spectra, and system-level behavior using oscilloscopes, VNAs, BERTs, and spectrum analyzers.</li><li><strong>Innovation & IP Contribution:</strong> 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.</li></ul><p style=\"font-style:normal;font-weight:400;text-transform:none;color:rgb(0,0,0);\"><br></p></div>"
    },
    {
      "name": "Your profile",
      "value": "<ul><li style=\"font-style:normal;font-weight:400;text-transform:none;color:rgb(0,0,0);\"><strong>Educational Foundation:</strong><span> </span>M.S. or Ph.D. in Electrical Engineering, Physics, Microsystems Engineering, or a related technical field.</li><li style=\"font-style:normal;font-weight:400;text-transform:none;color:rgb(0,0,0);\"><strong>Industry Expertise:</strong><span> </span>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.</li><li style=\"font-style:normal;font-weight:400;text-transform:none;color:rgb(0,0,0);\"><strong>Electro-Optic Experience:</strong><span> </span>Hands-on background integrating electronics with silicon photonic or optoelectronic components – modulators, photodiodes, optical packaging – is a strong advantage.</li><li style=\"font-style:normal;font-weight:400;text-transform:none;color:rgb(0,0,0);\"><strong>Packaging & SI/PI Know-How:</strong><span> </span>Demonstrated experience with high-speed PCB design, signal and power integrity analysis, and advanced packaging concepts (CoWoS, EMIB, or similar).</li><li style=\"font-style:normal;font-weight:400;text-transform:none;color:rgb(0,0,0);\"><strong>Analytical Toolset:</strong><span> </span>Familiarity with Python or MATLAB for measurement automation and data analysis; experience defining test SOPs for reproducibility.</li><li style=\"font-style:normal;font-weight:400;text-transform:none;color:rgb(0,0,0);\"><strong>Language:</strong><span> </span>Fluent English required; German or another European language is a plus.</li></ul>"
    },
    {
      "name": "Why us?",
      "value": "<ul style=\"border:0px solid;font-family:Inter, '-apple-system', BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', 'Open Sans', 'system-ui', '-apple-system', 'Segoe UI', Roboto, Ubuntu, Cantarell, 'Noto Sans', sans-serif, 'Apple Color Emoji', 'Segoe UI Emoji';font-size:14px;font-style:normal;font-weight:400;text-transform:none;color:rgb(238,238,238);\"><li style=\"border:0px solid;margin:0px;font-style:normal;font-weight:400;text-transform:none;color:rgb(0,0,0);font-size:14px;\"><p style=\"border:0px solid;margin:0px;\">We hire for attitude and train for skills.</p></li><li style=\"border:0px solid;margin:0px;font-style:normal;font-weight:400;text-transform:none;color:rgb(0,0,0);font-size:14px;\"><p style=\"border:0px solid;margin:0px;\">We encourage self responsibility and accelerate professional development.</p></li><li style=\"border:0px solid;margin:0px;font-style:normal;font-weight:400;text-transform:none;color:rgb(0,0,0);font-size:14px;\"><p style=\"border:0px solid;margin:0px;\">We move fast and encourage experimentation.</p></li><li style=\"border:0px solid;margin:0px;font-style:normal;font-weight:400;text-transform:none;color:rgb(0,0,0);font-size:14px;\"><p style=\"border:0px solid;margin:0px;\">You have the opportunity to be part of developing breakthrough photonic computing technology and have a lasting impact on the future of computing.</p></li><li style=\"border:0px solid;margin:0px;font-style:normal;font-weight:400;text-transform:none;color:rgb(0,0,0);font-size:14px;\"><p style=\"border:0px solid;margin:0px;\">You can be part of a passionate international, highly skilled cross functional team.</p></li><li style=\"border:0px solid;margin:0px;font-style:normal;font-weight:400;text-transform:none;color:rgb(0,0,0);font-size:14px;\"><p style=\"border:0px solid;margin:0px;\">You will have access to the founders of the company.</p></li></ul>"
    }
  ],
  "occupationCategory": "engineering",
  "recruitingCategory": "Permanent Employee"
}