C12

Head of Sales

Reposted 11 Days Ago

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Paris, Île-de-France, FRA

Hybrid

Senior level

Quantum Computing

The Role

As Head of Sales, you will own revenue growth, structure sales motions, manage complex sales cycles, and develop commercial narratives for a quantum computing company.

Summary Generated by Built In

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 minimizes hardware overhead—key ingredients for scalable, fault-tolerant quantum computing. By crafting a unique approach that scales, we aim to revolutionize 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 85, including 20 PhDs, has over 25 nationalities represented. We have our own cutting-edge lab spaces 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.

Your role at C12 Quantum Electronics

As Head of Sales, reporting directly to the CEO, you will join us at a pivotal moment in our growth: scaling founder-led revenue across heterogeneous channels. We are a quantum computing company with existing revenue and active contracts with industrial groups and defence organisations. Sales today are founder-led and span services and long-term hardware programs.

We are now hiring a senior commercial leader to take ownership of revenue growth, structure and professionalize our sales motion, and lead complex, high-credibility sales across industry, defence, and public markets. You will work closely with the CEO and technical leadership to translate deep scientific innovation into credible commercial narratives, and to turn early traction into a repeatable commercial engine without compromising our scientific ambition.

Your key responsibilities will include:

Owning end-to-end sales motions, from initial discovery through alignment and closing
Leading customer discovery and translate customer pain points into compelling commercial narratives and structured offers, grounded in our technical capabilities and competitive advantages
Driving technical and commercial alignment with customers, sometimes years ahead of delivery
Moving opportunities forward in long, multi-stakeholder sales cycles
Maintaining disciplined pipeline management and forecasting, tracking all touchpoints and follow-ups in CRM tools
Attending industry fairs, conferences, and targeted networking events to generate leads and nurture strategic relationships
Acting as a bridge between science, engineering, and commercial reality, working cross-functionally with engineering, product, and R&D to ensure customer needs are understood and acted upon
Brainstorming, iterating, and co-developing go-to-market strategy and long-term business direction with the CEO

About you:

You have 8-10 years owning and closing complex, technical sales
You have a master's degree in engineering, computer science, physics or any related field
You have experience in deep-tech or computing hardware and therefore have strong technical fluency
You are comfortable operating in environments with long sales cycles and political buying processes
You are familiar with high-touch, consultative and relationship-driven sales
You are able to sell evolving technology with credibility, transparency, and confidence
You are a strong communicator; able to engage effectively with engineers, researchers, executives, and procurement stakeholders
You are fluent in French & in English

What we offer:

€100,000 - €120,000 per year
Stock options for every employee (BSPCE/ESOP)
Sponsored trip to conferences around the world
A highly dynamic international team
Swile meal vouchers
Mental health support with moka.care
Training budget/ Annual Learning & Development Allowance
Sabbatical leave (after 2 years in the company)
Vibrant office culture (two office spaces in the heart of Paris, team lunches, offsite events, Friday breakfasts..)

You should join us if...

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 80-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.

We still encourage even if you don’t meet all the requirements. Rest assured, we are committed to finding the right fit for our team and are open to adjusting compensations based on skills and experiences.

Applications from women are especially welcomed!

Skills Required

8-10 years owning and closing complex technical sales
Fluent in French and English
Strong communication skills with engineers and executives

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The Company

HQ: San Antonio, TX

54 Employees

Year Founded: 2020

What We Do

C12 is building reliable quantum computers. The company is a spin-off from ENS launched in January 2020 by twin brothers Matthieu and Pierre Desjardins to supercharge the development of the lab’s promising new quantum technology. Quantum computing has the potential to change our lives. But frequent errors limit the technology’s viability. We are tackling the fundamental issue: the nature of the hardware itself. We are tapping into the simplest material–carbon–to drive a technological breakthrough in the field. Unlike other quantum computers, we use carbon nanotubes as the fundamental building block of our processor. By combining the power of an ultra-pure material with an easy-to-manufacture semiconductor device, we are building a scalable platform for quantum computing. Our executive co-founders bring a unique combination of scientific excellence and business skills to the company. Our team is made up of the world’s most accomplished experts in quantum electronics and carbon nanotube science. Our scientific advisors are renowned scientists and pioneers in spin qubits: Dr. Takis Kontos, Dr. Matthieu Delbecq and Dr. Jérémie Viennot. In June 2021, C12 secured a $10 million seed round with funding from 360 Capital, Bpifrance (Digital Venture Fund), Airbus Ventures, BNP Paribas Développement, and Octave Klaba (OVHcloud), and additional grants from Bpifrance and the Ile-de-France Region. We are leading quantum’s next material breakthrough, and we are just getting started. Silicon enabled the emergence of classical computing – it’s time for carbon to do the same for quantum !