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Quandela

Photonic quantum computers and single-photon sources

Cryogenic Integration & Validation Technician

Hardware Validation & Testing +1Updated on Nov 14
Full-timeNo salary listed

About the Job

Requirements

  • A Bac+3 degree in photonics, optics, electronics, mechanics, applied physics, or a related technical field is required.
  • Practical knowledge of cryogenics and the constraints associated with low temperatures is required.
  • Knowledge of heat transfer, thermalization, and mechanical constraints in cryogenic environments is required.
  • Ability to perform assembly and integration of components in cryogenic systems is required.
  • Experience manipulating and assembling sensitive or delicate components with precision and special precautions is required.
  • Knowledge of best practices for handling, cleanliness, and protection of components during integration is required.
  • Understanding of cryostats and their associated equipment is required.
  • Knowledge of vacuum principles and pumping equipment used in cryogenic applications is required.
  • Ability to commission, cool, and validate systems according to established procedures is required.
  • Ability to perform and validate integration operations according to defined protocols, analyze results, and write associated reports is required.
  • Ability to interpret temperature and pressure measurements to analyze system operation is required.
  • Ability to perform initial technical investigations, analyze observed symptoms, and help identify causes of malfunctions in collaboration with experts when needed is required.
  • Ability to follow procedures while identifying situations that require further analysis or expert intervention is required.
  • Ability to track maintenance deadlines and completed interventions is required.
  • Ability to read, follow, and write technical procedures and test reports is required.
  • Awareness of risks associated with cryogenic systems and vacuum equipment is required.
  • Careful, precise, and patient execution of delicate assembly work is required.
  • Autonomy, initiative, analytical problem-solving, practical aptitude, organization, accurate traceability, curiosity, continuous improvement, teamwork, communication, and safety awareness are required qualities.

Responsibilities

  • Prepare cryostats, components, and equipment for integration operations.
  • Precisely handle and assemble sensitive components using methods appropriate to their fragility and integration constraints.
  • Mount and integrate components and subassemblies inside cryostat chambers.
  • Route, position, and secure cables and connections inside cryogenic enclosures while protecting component and connection integrity.
  • Thermalize cables and components while accounting for thermal and mechanical constraints.
  • Ensure compliance with integration constraints, including space, mechanical interfaces, material compatibility, cleanliness, and thermal requirements.
  • Apply appropriate component handling, protection, and inspection practices throughout integration operations.
  • Perform integration checks and validation according to defined protocols.
  • Analyze inspection results, identify nonconformities, and participate in resolving them.
  • Write associated validation reports and maintain traceability of completed operations.
  • Identify integration difficulties and propose appropriate improvements.
  • Monitor the operation and maintenance of cryogenic equipment, particularly cryostats and their associated compressors.
  • Use vacuum and pumping systems required for proper operation of cryogenic installations.
  • Analyze system behavior and anomalies and help identify corrective actions in collaboration with relevant technical experts.
  • Provide technical support remotely or occasionally work on systems installed at customer sites in France or internationally.
  • Contribute to improving existing documentation so operations are more robust, repeatable, and suitable for increased production volumes.
  • Work in a small-series production environment with complex multidisciplinary equipment and progressively structured industrialization methods and processes.

About the Company

Quandela

Photonic quantum computers and single-photon sources

Quandela builds full-stack photonic quantum computers in France, including on-premises MosaiQ hardware and cloud access to its processors. It uses semiconductor quantum-dot single-photon sources to create bright, indistinguishable photons that act as optical qubits, with Perceval, an open-source Python framework, for simulating and programming photonic circuits, and Prometheus, a standalone single-photon source for research labs. The company differentiates itself by offering end-to-end hardware, software, and services—from production in its own facilities to cloud access and an acceleration program that guides clients from use-case exploration to hardware delivery. Its goal is to help clients achieve practical quantum advantages across industries such as cybersecurity, energy, finance, logistics, chemistry, and pharmaceuticals.

Company size
51-200
Company stage
Early VC
Total funding
$91.1M
Headquarters
Massy, France
Founded
2017

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