Support Qpu Engineer - Technical Account Manager H/F - 91

Quandela is a European start up that provides photonic quantum computers that are modular, scalable, energy-efficient and accessible both on the cloud and on premise.

Our team of 85 employees, specialises in the development of both software and hardware solutions for a variety of quantum applications. We offer a wide range of services, from developing the most efficient and brightest single photons sources, to creating algorithms for quantum computers and providing cloud quantum computing solutions.

Quandela plays a pivotal role as a strategic partner in the quantum transformation of industrial sectors such as energy, finance, pharmaceuticals, and transportation. Furthermore, we are esteemed collaborators within the academic and research community.

- Following a successful €50 million fundraising in 2023, we are now scaling up our commercial ventures alongside our ongoing research endeavors.
- Quandela has been chosen to participate in the French Tech 2030 program, which aims to bolster French companies pioneering groundbreaking innovations.About Quandela

Quandela is a French deeptech spin-off from CNRS, building Europe's first general-purpose photonic quantum computers.
We deliver across the full stack - from single-photon sources and photonic chips to simulation libraries (Perceval), programming platforms (Merlin), and cloud access (Quandela Cloud).

In just a few years, we've reached major milestones:

- Belenos, our 12-qubit QPU, 4,000× more powerful than its predecessor, set for installation at TGCC in 2025.
- A published 2024-2030 roadmap: first logical qubits by 2025, interconnected quantum systems by 2028, fault-tolerant computing by 2030

Until now, our quantum computers have been operated directly from our HQ in Massy, or accessed remotely via the cloud by academic and industrial partners. The next step is different.

Lucy, a 12-qubit photonic QPU delivered with EuroQCS-France (GENCI & CEA), will be hosted at CEA's Très Grand Centre de Calcul (TGCC), coupled with the Joliot-Curie supercomputer, and operated fullyoffline. No remote factory access, no back-office monitoring: reliability, integration, and local support become mission-critical.

Remote access to a 6-qubit system is already available today. Lucy's full on-site deployment at TGCC is expected in 2025, marking a milestone in Europe's hybrid HPC-Quantum roadmap.

Why this role matters ?

We are building a dedicated support cell to accompany Lucy's deployment.

This is not classic support. It's about ensuring the world's first large-scale photonic QPU integrated with HPC runs reliably, day after day.

You'll be the person researchers and TGCC teams rely on when uptime and stability are on the line, when hybrid HPC-Quantum workloads must be synchronized, or when the QPU itself needs calibration and monitoring.

More than troubleshooting, you'll help design the practices, monitoring, and coordination that will define how Europe's researchers engage with Lucy - and with future QPUs to come.