--- title: 'Expert Mechanical Engineer H/F at Alice & Bob' canonical: 'https://feeny.ai/job/expert-mechanical-engineer-h-f-alice-bob-aubervilliers-j926k8hnk7xk' type: 'job' last_seen: '2026-10-17' --- # Expert Mechanical Engineer H/F at Alice & Bob - **Company:** Alice & Bob - **Location:** Aubervilliers, France - **Work type:** hybrid - **Posted:** 2026-10-14 - **Last confirmed live:** 2026-10-17 - **Apply:** https://jobs.lever.co/alice-bob/be7c36c0-8c8c-4f14-adfb-3fc3155453fe ## Job description Alice & Bob is developing the first universal, fault-tolerant quantum computer to solve the world’s hardest problems. The quantum computer we envision building is based on a new kind of superconducting qubit: the Schrödinger cat qubit 🐈‍⬛. In comparison to other superconducting platforms, cat qubits have the astonishing ability to implement quantum error correction autonomously! We're a diverse team of 250+ brilliant minds from over 35 countries united by a single goal: to revolutionise computing with a practical fault-tolerant quantum machine. Are you ready to take on unprecedented challenges and contribute to revolutionising technology? Join us, and let's shape the future of quantum computing together! ## The role 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). Responsabilities - 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 ## Requirements - 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) Skillset - 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 Benefits: - Our success is your success: own it with our BSPCE plan - Direct IP Compensation: Earn substantial bonuses for driving the core patents that define our quantum architecture. - Flexible remote policy, up to 40 % a month - A Parental plan including additional benefits such as crèche support or additional days-off to take care of under 12 years old children - Subsidized membership with Urban Sports Club - Mental health support with moka.care - 25-day vacation policy (as per French law) + RTT - Half of transportation cost coverage (as per French law), or yearly allowance for the die-hard bicycle users - Competitive health coverage, with Alan. - Meal vouchers with Swile, as well as access to a fully equipped and regularly stocked kitchen - French language courses covered by the company for those interested 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. You will join of one of the most innovative startups in France at an early stage, to be part of a passionate and friendly team on its mission to build the first universal quantum computer! We love to share and learn from one another, so you will be certain to innovate, develop new ideas, and have the space to grow. ## About Alice & Bob ## Company Overview - **One-liner**: Alice & Bob is a French quantum computing company designing superconducting cat qubits—a type of qubit inherently protected from bit-flip errors—to build a universal, fault-tolerant quantum computer. - **Entity Type**: Private (Series B–II) - **Headquarters**: Paris, France (with offices in Boston, MA) - **Founded**: 2020 - **Founders**: Dr. Raphaël Lescanne (CTO) and Dr. Théau Peronnin (CEO) ## Core Business - **Primary industry**: Quantum computing hardware (superconducting circuits, cat qubit architecture) - **Target customers**: B2B – enterprises, research institutions, cloud providers, and government agencies - **Mission**: Build a useful quantum computer by pioneering error-corrected cat qubits that require 200× fewer physical qubits than competing platforms ## Products & Services - **Cat Qubit Chips**: Proprietary superconducting qubits with built-in bit-flip error protection. Generations include Boson, Helium, Lithium, Beryllium, and Graphene. - **Quantum Computer (via Cloud)**: Remote access to cat-qubit‑based quantum hardware and emulators (e.g., Felis emulator distributed via OVHcloud, Equinix). - **The Box (Consulting)**: Business strategy division helping enterprises identify early quantum advantage opportunities and timelines. - **Open‑Source / Developer Tools**: Collaborations on NVQLink (GPU/QPU integration) and CUDA‑Q integration with NVIDIA. ## Market Standing - **Valuation / Market Cap**: Not publicly disclosed - **Key Metrics**: - **Total Funding**: ~€180 M ($166 M per CB Insights) as of June 2026 - **Annual Revenue**: $8 M (estimated, per Apollo) - **Employees**: 250+ (company website); Apollo reports 163 with +72% YoY growth - **Notable Investors**: NVIDIA (NVentures), Bpifrance, Elaia, Breega, Supernova Invest, Atlantic Vantage Point (AVP), Future French Champions, European Innovation Council - **Growth Signals**: - Series B closed at €100 M in January 2025; extended with NVIDIA investment in June 2026 - Grant funding from ARPA‑E, DARPA, and PROQCIMA (France) - Named to French Tech Next40 for second consecutive year (2026) - World‑record bit‑flip time >1 hour (up to 252 minutes) demonstrated in September 2025 - Published theoretical proof that cat‑qubit architecture needs ~200× fewer qubits for fault tolerance - 70+ core patents on cat qubits ## Competitive Advantages - **Cat qubit moat**: Only pure‑play company focused on cat qubits; qubits are inherently protected from bit‑flip errors, drastically reducing hardware overhead for error correction. - **Strong IP portfolio**: 70+ core patents covering cat qubit design and error correction. - **Ecosystem partnerships**: Close collaboration with NVIDIA (NVQLink, CUDA‑Q), Google Cloud, Riverlane, Classiq, OVHcloud, and Equinix. - **Scientific advisory board**: Includes renowned quantum physicists (Daniel Gottesman, David DiVincenzo, John Martinis, Yasunobu Nakamura) and leading French research institutions. ## Strategic Focus - Execute chip roadmap (Boson → Graphene) targeting 100 high‑fidelity logical qubits by 2030. - Scale from current lab‑scale systems to a universal, fault‑tolerant quantum computer. - Expand international presence: HQ in Paris, new 4,000 m² R&D facility under construction, Boston office, and remote team across 12+ countries. - Deepen integration with classical HPC through NVIDIA and cloud partnerships. ## Why Work Here - **Culture**: Emphasizes pioneering spirit, cohesion, trustworthiness, and ingenuity. Regular team events (Monday breakfasts, Snacky Time, annual off‑site, hiking, Tech Cafés, Forum Day). - **Work policy**: Hybrid with up to 40% remote flexibility; relocation and visa support available. - **Compensation & perks**: Employee stock plan, 5 weeks holiday + RTT, 50% Navigo pass, meal vouchers (Swile), competitive healthcare (France & US), parental leave, 401k (US), language courses. - **Team**: 250+ people from 35 nationalities, 85 PhD holders. Engineering‑heavy (research & technical roles dominate). - **Recognition**: EgaPro index score of 54/100 (gender parity in progress); rated 4.0/5.0 on employer review sites. - **Growth trajectory**: High headcount growth (+72% YoY), active hiring (23 open positions as of mid‑2026, including experimental physicist, ML engineer, nanofabrication technician, etc.). ## Sources 1. [alice-bob.com/thats-us/](https://alice-bob.com/thats-us/) 2. [linkedin.com/company/alice-bob](https://linkedin.com/company/alice-bob) 3. [jobs.lever.co/alice-bob](https://jobs.lever.co/alice-bob) 4. [alice-bob.com/join-us/](https://alice-bob.com/join-us/) 5. [cbinsights.com/company/alicebob](https://www.cbinsights.com/company/alicebob) ## Other roles at Alice & Bob - [Office/Workplace Manager M/F](https://feeny.ai/job/office-workplace-manager-m-f-alice-bob-aubervilliers-6gba7dekmtxq) — Aubervilliers, France - [Test and Characterization Engineer H/F](https://feeny.ai/job/test-and-characterization-engineer-h-f-alice-bob-aubervilliers-j0epwbmnzzkd) — Aubervilliers, France - [Deposition & Etch Equipment and Production Engineer (H/F)](https://feeny.ai/job/deposition-etch-equipment-and-production-engineer-h-f-alice-bob-aubervilliers-y0t5p1269d2b) — Aubervilliers, France - [Cleanroom Lithography Equipment & Production Engineer H/F](https://feeny.ai/job/cleanroom-lithography-equipment-production-engineer-h-f-alice-bob-aubervilliers-gjrvgkf58mft) — Aubervilliers, France - [Senior RF Engineer – Quantum Control H/F](https://feeny.ai/job/senior-rf-engineer-quantum-control-h-f-alice-bob-aubervilliers-yjppt6aae7ws) — Aubervilliers, France - [Electronics & Hardware Integration Engineer](https://feeny.ai/job/electronics-hardware-integration-engineer-alice-bob-aubervilliers-e723ef8s900n) — Aubervilliers, France - [Technicien Process Nanofabrication H/F](https://feeny.ai/job/technicien-process-nanofabrication-h-f-alice-bob-aubervilliers-gt4213g9jcdf) — Aubervilliers, France - [Layout Scale-Up Engineer](https://feeny.ai/job/layout-scale-up-engineer-alice-bob-paris-th728act5a8d) — Paris, France - [Acheteur Projet Senior – Électronique & RF](https://feeny.ai/job/acheteur-projet-senior-electronique-rf-alice-bob-paris-n3j5hn60qskk) — Paris, France - [HR & Office Manager](https://feeny.ai/job/hr-office-manager-alice-bob-boston-vvjyht39vfqm) — Boston, MA