Expert Mechanical Engineer, Alice & Bob
+ Direct IP Compensation: Earn substantial bonuses for driving the core patents that define our quantum architecture.
Office located in Aubervilliers, Paris
Fault-tolerant quantum computing developer
Be an early applicant
Fault-tolerant quantum computing developer
101-200 employees
Be an early applicant
+ Direct IP Compensation: Earn substantial bonuses for driving the core patents that define our quantum architecture.
Office located in Aubervilliers, Paris
101-200 employees
Company mission
To create a future where humans play by the same rules as nature.
Role
Who you are
- A precision-mechanics specialist with a proven track record of solving demanding integration and reliability challenges under tight physical constraints
- Comfortable splitting their time between hands-on development and methodology work, they bring structure and rigor to the team while staying pragmatic and collaborative
- Education: Master's-level engineering degree or equivalent in Mechanical Engineering, Precision Mechanics, or a related field
- Languages: Proficient in English; French is a plus
- Experience: Minimum 7 years in mechanical design and integration, ideally in a high-constraint environment (aerospace, satellite, semiconductor, quantum, or scientific instrumentation)
- Strong hands-on expertise in precision mechanics (design, machining, assembly, tight tolerances)
- Proficiency in SolidWorks for mechanical design
- Proficiency in technical drawings and geometric tolerancing (GD&T / ISO GPS)
- Knowledge of cryogenic and thermal constraints on mechanical parts (materials behavior, thermal cycling, thermalization)
- Knowledge of materials suited to cryogenic and low-magnetic environments, and of vacuum compatibility requirements
- Experience defining and formalizing validation and qualification methodologies
- Ability to translate complex mechanical requirements into robust, scalable designs
- Strong documentation and technical communication skills
- Mentoring mindset and ability to share know-how within a team
- Research shows that women might feel hesitant to apply for this job if they don't match 100% of the job requirements listed. This list is a guide, and we'd love to receive your application even if you think you're only a partial match. We are looking to build teams that innovate, not just tick boxes on a job spec
What the job involves
- In a context where mechanical parts and integration hardware face increasingly demanding requirements in precision, scalability and robustness, particularly under the cryogenic and thermal constraints specific to our platform, the Staff Precision Mechanical Engineer brings dedicated precision-mechanics expertise to the Cryo Hardware Development team and raises its engineering standards in formalization, qualification and validation
- Reporting to the Cryo Hardware Development Manager, they will work closely with RF engineers, physicists, and the assembly and procurement teams to design, develop and oversee the full range of mechanical parts and integration hardware, with particular attention to chip-level components (e.g. sample holders and packaging)
- Design and develop precision mechanical parts and integration hardware
- Design and develop mechanical parts and integration hardware hands-on, and oversee their development when carried out by external partners, with particular attention to chip-level components
- Produce manufacturing drawings with appropriate tolerancing and follow parts through fabrication with suppliers and machining workshops
- Ensure precision, manufacturability and repeatability across iterations
- Ensure scalability and robustness under cryogenic and thermal constraints
- Anticipate and address mechanical failure modes linked to cryogenic and thermal cycling
- Drive design choices that support scaling from prototype to series production
- Build the validation and qualification methodology
- Set up and formalize validation methods for mechanical parts and integration components
- Define qualification criteria and testing protocols in collaboration with the team
- Raise the team's engineering standards
- Share rigorous engineering practices (formalization, development, qualification, validation) with the rest of the Cryo Hardware Development team
- Act as a technical reference on precision mechanics for the team
- Interactions
- Internal: Cryo Hardware Development team, RF engineers, physicists, chip design and nanofabrication teams (for chip-level components), assembly team (Technical Operations), procurement team, project managers
- External: Part suppliers and machining workshops
Our take
Creating top-tier quantum hardware, including qubits and control electronics, presents a significant hurdle for those pursuing high-power quantum computing. Various qubit technologies exist, each boasting unique advantages and drawbacks, with the most recent research in the sector involving the pursuit of a scalable, fault-tolerant qubit technology.
Joining this pursuit is Alice & Bob, a company specialising in "cat qubits". This technology, named for Schrodinger’s infamous cat, is able to reduce hardware requirements, promising fault-tolerant quantum computing at scale. With over 150 employees and pioneering experimental results, Alice & Bob has notable achievements, including the development of its 16-bit Helium 1 quantum processing unit.
Recognised for its groundbreaking work, Alice & Bob recently received a hefty innovation grant that will support its work moving forwards. Through projects like "Cat Factory," in collaboration with academic partners, the company aims to optimise quantum computation infrastructure, making it more cost-effective and market-ready and ultimately building "the first universal quantum computer”.
Kirsty
Company Specialist at Welcome to the Jungle
Company
Funding (last 2 of 6 rounds)
Mar 2026
$3.9m
GRANT
Jan 2025
$112.3m
SERIES B
Total funding: $156.3m
Company HQ
Javel, Paris, France
Leadership
Théau Peronnin
(Co-Founder & CEO)Interned at Quantum Electronics Group as part of a Masters in Quantum Physics. Then did PhD study at Quantum Circuit Group before founding the company.
Raphaël Lescanne
(Co-Founder & CTO)Co-founded Alice & Bob in 2020 alongside Théau.
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