Support Qpu Engineer - Technical Account Manager H/F Quandela

What we offer :

Salary range: €45-60k, depending on background and autonomy.

- €45-50k: solid HPC/infra engineer ready to grow into QPU.
- €50-55k: autonomous on HPC monitoring + user enablement.
- €55-60k+: senior profile, able to coordinate and step into a Technical Account Manager scope.

On top of base salary: annual profit-sharing, company savings plan, 100% health coverage (Alan), 50% transport reimbursement or mobility bonus, Swile meal vouchers, and access to Gymlib.

Why join ?

- Be part of Lucy's deployment, the first large-scale photonic QPU in Europe.
- Work at the intersection of quantum, HPC, and national infrastructure.
- Collaborate directly with CEA, GENCI, and top researchers.
- Grow from support into coordination and technical account management.
- Contribute to Europe's quantum roadmap - with impact today, and vision to 2030 and beyond.

A final word !

At Quandela, support is not a back-office function. It is where science meets reality.

As Support Engineer today - and Technical Account Manager tomorrow - you'll be the bridge between pioneering researchers and a working quantum machine. The reliability you ensure, and the insights you provide, will define how Lucy and future QPUs serve Europe's scientific community.

So... if you're ready to make Europe's first offline QPU your mission, let's talk

What will you do:

Your mission covers the full QPU lifecycle: from daily operations and maintenance, to user support, performance tracking, and external interface.

- Operate and monitor the QPU: perform daily health checks and run predefined test protocols across Lucy's modules (optics/photonics, control electronics, HPC interfaces). Collect logs, document anomalies, and escalate issues when required*.
- (Build automated monitoring): develop Python/Linux scripts and dashboards (ETL-style) to turn raw machine data into proactive alerts and performance tracking, reducing manual checks and ensuring long-term reliability.
- (Report on metrics): uptime, gate fidelity, error rates, response times - providing clear visibility to CEA/GENCI and to Quandela's R&D.
- Support researchers: handle tickets, manage access and maintain documentation.
- Interface & report: act as SPOC with TGCC/HLST, join weekly reviews, ensure compliance with reporting standards, and secure operational continuity (keep all stakeholders aligned).

*NB: You will not directly repair or calibrate optics/photonics modules yourself. Your role is to interact with these systems through monitoring and predefined tests, verify that modules are functioning correctly, and escalate issues with clear documentation to the dedicated specialists.

On-site presence :

- 5 days/week at TGCC (Bruyères-le-Châtel, Essonne)
(Some flexibility may be possible later, but the role is primarily on-site given its operational nature)
- On-call duties (astreintes) may be part of the role - details to be confirmed with HLST procedures.

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How you'll grow :

- 0-3 months: onboard on TGCC/HPC workflows, handle standard QPU tickets, deliver first documentation.
- 3-6 months: trusted SPOC for GENCI/CEA, ensure machine reliability, identify recurring issues, propose fixes.
- 6-12 months: step into coordination - align stakeholders, anticipate upgrades, structure KPIs, and drive proactive enablement.

Longer term: Could grow into a Technical Account Manager role - becoming the go-to person for QPU operations and future deployments, linking clients with R&D/Product, and contributing to next-gen roadmaps.

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Profile we value :

Must-have

- Python & Linux (advanced): scripting, automation, troubleshooting, data handling (ETL workflows, monitoring, reporting).
- Operational discipline: able to run/document system checks (module start/stop, execute test protocols, collect logs) and escalate issues.
- Rigor & communication: structured documentation, clear escalation, effective collaboration with both researchers

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.