Founded in 2020 and based in the heart of Paris, C12’s mission is to be at the center of one of the biggest technological breakthroughs of the century, and change the course of history by building a universal quantum computer. At C12, we believe that achieving a true breakthrough in quantum computing requires rethinking the fundamentals. That’s why our founders—deeply rooted in academic and engineering excellence—have chosen carbon nanotubes as the building blocks of our quantum processors. This ultra-pure material dramatically reduces error rates, boosts performance, and minimises hardware overhead—key ingredients for scalable, fault-tolerant quantum computing. By crafting a unique approach that scales, we aim to revolutionise quantum computing just as silicon transformed classical computing. Since our founding, we’ve raised over €25 million in funding, published 11 scientific papers, and secured 8 patents. Today, our fast-growing team of 60, including 20 PhDs, has over 20 nationalities represented. We have our own cutting-edge lab space in Paris' historic Panthéon district; where scientists, engineers, and innovators work side-by-side to tackle some of the most exciting technical challenges of our time. If you're passionate about shaping the future of quantum technology and want to make a real impact, C12 offers a unique environment to grow, learn, and innovate.
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Your role at C12 Quantum Electronics
- Reporting directly to Eileen, our HR Manager, you will be instrumental in creating a smooth employee experience for both current and future team members. You will contribute to the development of scalable HR practices tailored to our distinctive environment, resulting in improved employee satisfaction and overall organisational efficiency.
Your tasks will include:
- Supporting the HR team with day-to-day operational routines such as organising interviews, onsite visits and other administrative tasks
- Coordinating with the various functions to ensure a smooth onboarding of future teammates
- Maintaining accurate employee data in our HRIS (BambooHR) and other internal tools
- Providing operational support to all our employees
- Collaborating with the HR team and team leaders to handle training requests and obtain quotes from external training providers
- Helping to build new HR processes and projects for C12 if you are motivated and exceed expectations - new ideas are always welcome!
This role (and the HR team) may evolve with the company's growth - there will be room for career evolution if you are motivated and high-performing.
About you:
- You have a master’s degree or a specialisation in HR
- You are looking for an end-of-study internship (ideally 5 - 6 months)
- You have great communication skills in English (written and spoken), French is a plus
- You are fluent in English (written and spoken); French is a plus
- You are organised, detail-oriented and are able to manage various tasks according to business’ priorities, and in a fast-paced environment
- You have strong interpersonal and communication skills
What we offer:
- Two incredible office spaces in the heart of Paris (both next to the famous Panthéon!)
- A highly dynamic international team
- Swile meal vouchersVibrant office culture (team lunches, offsite events, Friday breakfasts..)
- Mental health support with moka.care
- Training budgets/ Annual Learning & Development Allowance
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You should join us if...
You like hands-on work and technology
You want to contribute to achieving landmark results in quantum computing, making a difference in the emerging quantum technologies
You want to work within a 60-people team with various backgrounds in nanofabrication, quantum electronics, and carbon nanotube science to create a revolutionary quantum computing processor
You want to thrive in an exceptional scientific environment with several industrial and academic partners
You share our values (excellence, scientific integrity, diversity, curiosity, and care) and want to help us define our product-focused culture and ambition to accelerate.
C12 encourages all who feel qualified to apply. Recruitment decisions are based solely on qualifications, skills, knowledge and experience. Applications from women are particularly welcomed.
TECHNICAL & MARKET ANALYSIS | Appended by Quantum.Jobs
The operational capacity of deep-tech organizations hinges critically on mature human capital infrastructure, often overlooked amid intense technical focus on quantum hardware and software development. Non-technical roles, such as HR support, are structurally necessary for mitigating the scaling risks inherent in transitioning from R&D initiatives to commercially viable enterprises. This foundational enablement ensures the development and maintenance of efficient talent pipelines, compliant administrative frameworks, and cohesive organizational structures capable of sustaining accelerated growth. The consistent processing of core human resources functions—from candidate intake to lifecycle management—translates directly into improved organizational throughput and resilience, acting as a crucial non-technical dependency for future technical advancement and commercial translation.
The quantum computing sector, currently defined by rapid technological maturation and global competition for highly specialized talent, experiences acute pressure on its foundational enabling functions. As quantum hardware companies scale their engineering and scientific teams—moving from proof-of-concept laboratories toward scaled commercial products—the administrative and regulatory complexity increases exponentially. This necessitates robust internal structures that can manage diverse international workforces, facilitate cross-border compliance, and systematize onboarding processes for high-volume hiring waves, particularly for specialized roles in nanofabrication and quantum electronics. The current industry focus lies on bridging classical and quantum capabilities at scale, requiring HR systems that can effectively integrate personnel with non-traditional academic backgrounds alongside advanced scientific staff, thereby maximizing the utilization of scarce human capital resources across the quantum value chain. Efficient pipeline development for junior and internship roles is paramount for long-term talent strategy, directly countering the sector-wide shortage of quantum-literate professionals.
The core capability domain for organizational enablement in a deep-tech context revolves around system standardization, data integrity, and compliance assurance. This architecture is built upon the disciplined management of human resources information systems (HRIS), which serves as the interface between strategic talent planning and daily operations. Functional mastery includes the meticulous execution of data entry protocols, ensuring regulatory adherence across compensation, training, and employment lifecycle management. Effective internal communication and coordination capability are leveraged to streamline cross-functional interfaces, such as aligning recruitment pipelines with hardware engineering roadmaps or facilitating institutional training programs. This framework of operational excellence provides the necessary organizational stability that permits specialized scientific teams to focus on technical development and innovation without administrative friction, underscoring the structural value of high-precision support functions.
Catalyze efficiency gains in the initial stages of high-volume technical recruitment.
Streamline the institutional capacity to absorb international scientific talent effectively.
Document and codify nascent organizational operating procedures for future scalability.
Reduce administrative friction encountered during cross-functional research and development cycles.
Enhance talent retention rates by ensuring a consistent and supportive onboarding experience.
Develop foundational data integrity for long-term workforce planning and demographic analysis.
Accelerate the standardization of internal HR processes necessary for regulatory compliance.
Mitigate operational risk associated with rapid headcount expansion in a deep-tech environment.
Contribute to the strategic alignment of personnel services with core business objectives.
Secure the accurate tracking of employee training and professional development expenditure.
Foster early-stage exposure for university-level talent to emerging quantum technologies.
Establish reliable internal support mechanisms for a globally diverse technical workforce.
Industry Tags: Quantum Workforce Development, Deep-Tech Organizational Scaling, Human Capital Infrastructure, Tech Talent Pipeline, Quantum Computing Ecosystem, High-Growth Enterprise HR, Non-Technical Enablement, Nanofabrication Support
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