Quantum Sensing Engineer (NV Centers) (f/m/d)

Description QuantumDiamonds is building commercial quantum sensing tools for semiconductor inspection and failure analysis. As our Quantum Sensing Engineer (NV Centers) , you will join the Hardware Pre-Development Team and take technical ownership of the sensing core of our widefield Quantum Diamond Microscope (QDM). At the heart of your role is one question: how do we get more performance out of the NV sensing system? You will work across the complete sensing chain — from the diamond sensor and laser excitation through microwave spin control and bias magnetics to fluorescence collection and camera readout. When sensitivity, resolution, speed, or stability falls short, you will investigate the system end to end, identify the limiting mechanism, and turn your findings into measurable improvements. The diamond sensor itself is an important part of that challenge. Together with internal experts and external partners, you will help drive the development of our NV diamond material — connecting epitaxy, irradiation, annealing, surface preparation, and optical coatings to the performance we ultimately achieve at the system level. This is a hands-on R&D role spanning quantum physics, experimental hardware, and sensor development. You will take ideas from first principles through experiments and prototypes to validated technologies that can be transferred into our products.   Who we are Founded in 2022 as a spin-off of TU Munich, QD leverages quantum sensors to rapidly capture three-dimensional current maps within multi-layer chips. Our strong, international team of over 70, including physicists, engineers, data scientists, and other experts, works side by side with major semiconductor manufacturers, supporting chip debugging and accelerating yield analysis. Backed by top-tier deep tech investors, semiconductor experts, and strategic public programs, we have ensured long-term stability, shifting from breakthrough to scale - and shaping the next chapter in chip testing.   Why join QuantumDiamonds? Picture this: Quantum sensors that see inside the most advanced chips on Earth, right where two frontier fields collide. Nobel-Prize physics aimed at real customers with real problems, in production now, not someday. Physicists, data scientists, and engineers building side by side, turning deep science into tools the industry actually runs on. An international team that runs at hard problems for fun, where knowledge moves fast and so do you. Still unsure about why joining us? You'll get to build a company together with a brilliant and welcoming team on a product that has never been done before. From Day 1, you'll own your own topics end to end and see the direct impact of your work on how the world sees QuantumDiamonds. Our technology is the cutting edge of tomorrow, starting today and not in 10 years. You’ll be part of a high-growth company backed by top-tier investors. Let’s make the invisible visible!     What will you do Own the end-to-end NV sensing chain of the QDM, from laser excitation and diamond sensor through microwave spin control and bias field to fluorescence collection and camera readout. Develop and benchmark measurement protocols (e.g., ODMR variants, pulsed sequences, lock-in and referencing schemes) that improve sensitivity, speed, and robustness. Prototype hardware improvements across microwave delivery, photon collection, bias magnetics, and timing, and validate every concept hands-on in the lab. Steer our diamond sensor R&D, providing technical direction to our diamond material/process experts and driving recipe optimizations for NV-layer epitaxy, irradiation and annealing, surface preparation, and optical coatings towards our system-level performance goals. Define diamond specifications, characterize new material generations (NV density, contrast, coherence, strain), and correlate material parameters with system performance. Collaborate across hardware and software, docu