Location: Chicago, IL (On Site)Company: memQPosition OverviewWe seek a Cavity Design Engineer to design optical cavities at the core of memQ’s quantum network interfaces. You will own cavity designs for qubits in the Lamb-Dicke regime, from mode and mirror coating design to vacuum-compatible mechanical implementation, working with neutral atom scientists, mechanical engineers, and photonic designers from simulation to lab.Key Responsibilities- Cavity Design & Simulation: Set geometry, mode waist, finesse, and cooperativity using analytical models and numerical tools- Mirrors & Coatings: Specify substrates and dielectric coatings; manage vendors and acceptance testing- Mechanical & Vacuum Integration: Work on spacers, piezo tuning, thermal/vibration stability, UHV compatibility- Stabilization & Characterization: Define locking schemes (e.g., PDH) and protocols; analyze measured data- System Modeling: Model emitter-cavity performance for system trade-offsRequired Qualifications- Education: MS or PhD in Physics, Applied Physics, Optics, or related- Experience: 3+ years designing/building optical cavities or resonators (PhD research counts)- Technical Skills: Gaussian beam optics, cavity mode analysis, mode matching- Tools: Zemax OpticStudio, COMSOL, Lumerical, or similar; Python for modeling and data analysis- Hands-on: Cavity alignment, laser locking, and characterization (ring-down, linewidth, finesse)- Knowledge: cQED and light-matter interactionBonus Points- cQED with neutral atoms or other atomic systems- Fiber Fabry-Pérot cavities; laser-machined/semiconductor-processed substrates- Dielectric coating design, low-loss optics, birefringence control- UHV assembly and bake-out experience- Familiarity with integrated photonics or nanophotonic cavitiesWhat We Offer- Competitive salary and performance-based incentives- Equity options in a high-growth quantum tech company- Comprehensive benefits package- Professional development opportunitiesTo Apply: Send resume and cover letter to hiring@memq.tech.