Cryogenic Integration & Validation Engineer

Quandela is a global leader in quantum computing, designing, developing and deploying state-of-the-art quantum solutions for research and industry. Its offering includes the most energy-efficient quantum computers for data centers, complete quantum computing solutions accessible via the cloud, as well as services providing access to algorithms for academic and industrial players. With a pragmatic and progressive roadmap, Quandela has been deploying industrial-grade systems since 2023, while developing future generations of fault-tolerant quantum computers capable of scaling through the integration of thousands of photonic components. Quandela aims to make quantum computing accessible to as many people as possible in order to help solve the most complex industrial and societal challenges. Learn more: Quandela | Leading Photonic Quantum Computing Solutions Join us at the forefront of innovation in quantum computing 🚀 About the position As part of the development of our production and integration activities for photonic quantum processors (QPUs), we are looking for a Cryogenic Integration & Validation Engineer to join our Assembly & Production team, based in Massy. You will mainly work on the integration and validation of equipment and subassemblies within the cryostats used in our systems. These operations involve handling sensitive and delicate components, requiring high precision, meticulousness and particular attention to mounting and integration conditions. You will carry out mounting, wiring, thermalization, commissioning and control operations, ensuring compliance with cryogenic constraints and validation protocols. You will also participate in monitoring the operation and maintenance of cryogenic equipment, in particular cryostats and their associated compressors. Understanding and using vacuum and pumping systems will be part of your activities, as they are essential to the proper functioning of cryogenic installations. Beyond applying procedures, you must be able to understand system behavior, analyze anomalies and contribute to identifying the actions needed to resolve them, in collaboration with the relevant technical experts. Depending on needs, you may provide remote technical support or intervene occasionally on systems installed at our customers' sites, in France or abroad. The position is part of a small-series production environment, with complex and multidisciplinary equipment. Scaling up production is already underway, notably through the progressive structuring of our industrialization methods and processes. An initial documentation base is already in place, and you will contribute to its improvement in order to make operations more robust, reproducible and suited to increasing production volumes. You will receive support and internal training to deepen your knowledge of cryogenic equipment specific to Quandela, with the possibility of progressively becoming a key technical contact for these systems. Main responsibilities Integration and validation of equipment in cryostats You carry out the integration of components and subassemblies, sometimes sensitive and delicate, within cryostats. These operations require high precision and compliance with cleanliness, handling and assembly requirements. In this role, you: - Prepare cryostats, components and equipment needed for integration operations. - Handle and assemble sensitive components with precision, applying precautions and methods suited to their fragility and integration constraints. - Carry out the mounting and integration of components and subassemblies in cryostat chambers. - Ensure the routing, passage and fastening of cables and connections inside cryogenic enclosures, taking care to preserve the integrity of components and connections. - Carry out thermalization of cables and components, taking thermal and mechanical constraints into account. - Ensure compliance with integration constraints: bulk, mechanical interfaces, material compatibility, cleanliness and thermal constraints. - Apply good practices for handling, protection and inspection of components throughout integration operations. - Carry out inspection and validation of integration according to defined protocols. - Analyze inspection results, identify any non-conformities and take part in their resolution. - Write the associated validation reports and ensure traceability of operations performed. - Identify integration difficulties and propose suitable improvements. Requirements Essential technical skills - Holder of a Bac+5 degree (Master's or engineering degree) in photonics, optics, electronics, mechanics, applied physics, condensed matter physics or a related field. A PhD would be appreciated. - Good practical knowledge of cryogenics and understanding of the constraints associated with low temperatures. - Knowledge of heat transfer principles, thermalization and the mechanical constraints related to cryogenic environments. - Ability to carry out mounting and integration of components in cryogenic systems. - Experience handling and assembling sensitive or delicate components, requiring precision and particular precautions. - Mastery of good practices for handling, cleanliness and protection of components during integration operations. - Understanding of the general operation of cryostats and their associated equipment. - Knowledge of vacuum principles and the operation of pumping equipment required for cryogenic applications. - Ability to carry out commissioning, cooling and validation operations according to established procedures. - Ability to carry out and validate integration operations according to defined protocols, analyze results and write associated reports. - Ability to interpret temperature and pressure measurements to analyze system operation. - Ability to carry out initial technical investigations, analyze observed symptoms and contribute to identifying the causes of a malfunction, in collaboration with experts when necessary. - Ability to follow procedures while recognizing situations requiring further analysis or the intervention of an expert. - Ability to track maintenance deadlines and completed interventions. - Ability to read, apply and write technical procedures and test reports. - Awareness of the risks associated with cryogenic systems and vacuum equipment. Desired qualities - Meticulousness and precision: ability to carry out delicate assembly operations with care, patience and constant attention to detail. - Rigor and respect for procedures: attention to the quality of assemblies, cleanliness of equipment and protection of sensitive components. - Autonomy and initiative: ability to take charge of assigned activities, identify difficulties and reach out to the right contacts when necessary. - Analytical and problem-solving mindset: ability to understand system behavior, analyze anomalies and conduct methodical investigations. - Pragmatism and practical sense: taste for technical handling, integration and concrete problem-solving. - Organization and traceability: ability to document operations, track tests and maintain reliable technical records. - Technical curiosity and willingness to learn: interest in how equipment works and in gradually acquiring in-depth expertise. - Continuous improvement mindset: ability to contribute to structuring processes and improving working methods. - Ability to work in a team with diverse technical profiles and to consult appropriate experts. - Teaching and communication: ability to pass on knowledge and support other team members. - Respect for safety rules and awareness of the risks associated with cryogenic systems and vacuum equipment. Benefits What we offer: - A high-impact role, with real responsibilities from your arrival - A team that wants to collaborate, share and grow with you - A hybrid working model: 3 days per week on site in Massy, 1 day in Paris and 1 to 2 days of remote work - Daily exposure to the entire quantum stack: from high-level APIs down to low-level firmware, and everything in between Recruitment process: - Interview with the Talent Acquisition team (30 to 45 min) - Interview with the Hiring Manager (45 min) - Case study: live or to be prepared at home and then presented - Meeting with the teams - 2 reference checks - Offer This process is provided for information only and may change depending on the position. At Quandela, we believe that the richness of our team relies on the diversity of experiences, perspectives and backgrounds. We are committed to building a respectful, inclusive and welcoming work environment. All applications are welcome. 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