Head of Sales

C12Qe; Paris; Sur place; EUR 100 000 - 120 000; Plein temps

Avantages offerts par ce poste

Stock options for every employee (BSPC

Sponsored trip to conferences around 1

Dynamic international team

Swile meal vouchers

Mental health support with moka.care

Training budget / Annual Learning &amp

Sabbatical leave (after 2 years)

Two office spaces in Paris

Résumé du poste

C12, a Paris-based quantum computing company, is seeking a senior Head of Sales reporting to the CEO. You will own revenue growth, structure and professionalize our sales motion, and lead complex, high‑credibility sales across industry, defence, and public markets.

Collaborating with the CEO and technical leadership to translate deep scientific innovation into credible commercial narratives, you will turn early traction into a repeatable engine while upholding our scientific ambitions.

Qualifications

• 8-10 years owning and closing complex, technical sales.
• Master's degree in engineering, computer science, physics or related field.
• Experience in deep-tech or computing hardware with strong technical fluency.
• Comfort with long sales cycles and political buying processes.
• Familiarity with high-touch, consultative and relationship-driven sales.
• Ability to sell evolving technology with credibility, transparency, and confidence.
• Strong communicator able to engage with engineers, researchers, executives, procurement stakeholders.
• Fluent in French and English.

Responsabilités

• Owning end-to-end sales motions, from initial discovery through alignment and closing.
• Leading customer discovery and translating pain points into compelling commercial narratives and structured offers.
• 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 touchpoints in CRM systems.
• Attending industry fairs, conferences, and networking events to generate leads and nurture strategic relationships.
• Bridging science, engineering and commercial realities with cross-function collaboration.
• Brainstorming and co-developing go-to-market strategy with the CEO.

Connaissances

Lead complex sales

Technical fluency

Communication

French & English fluency

Formation

Master's degree in engineering/CS/physics

Description du poste

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.

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.

Key Responsibilities

• 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

Qualifications & Experience

• 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

Compensation & Benefits

• €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!