CTO Co founder : Climate Tech Co founder (Remote)

CTO Co founder : Climate Tech Co founder

Co founder job description

Co-founder CTO (Climate Tech – Data Center Innovation)

Position: Co-founder & Chief Technology Officer (CTO)

Location: Europe-based with frequent in-person collaboration in Paris or Bordeaux during early stage

Compensation: Equity-based (founders share ownership)

Meet Your Future Co-founders

We’re a committed founding team with strong commercial, operational, and financial experience, building a venture at the intersection of climate impact and digital infrastructure. We're now looking for our third co-founder: a technical leader who wants to build a high-impact company from the ground up.

What We’re Building

Data centers are the digital engines of our world—and one of the fastest-growing sources of carbon emissions. We're on a mission to make them radically more sustainable.

We are exploring innovations in:

• Next-gen cooling and thermal management
• AI-powered energy optimization
• E-waste reduction and hardware circularity
• Grid-smart, renewable-integrated operations

Our ambition is to build a climate tech venture that transforms how data infrastructure is deployed and managed—with measurable environmental outcomes. We are shooting to reduce carbon emissions by 10Mt CO2e per year at scale.

The Role: CTO & Co-founder

You will be a co-creator, technical visionary, and team builder. This is not a job—this is your startup too.

Your role will include:

• Co-designing the product and tech strategy from day one
• Leading all technical decisions: architecture, infrastructure, prototyping, scaling
• Building and managing the technical team as we grow
• Identifying the right trade-offs between fast testing and long-term sustainability
• Collaborating with commercial and climate experts to ensure product-market-climate fit
• Shaping a culture of technical excellence, inclusion, and purpose

More broadly, co-designing the Company and its culture in collaboration with the 2 existing founders

Who You Are

You might be a technical generalist with deep systems experience or a specialist in one of these areas:

• Data center infrastructure (hardware, network, thermal)
• HVAC, heat management, or thermal systems
• Renewable energy and storage integration
• Circular economy in electronics / e-waste
• IoT, edge computing, or AI for infrastructure ops

You may have never thought of yourself as a founder—but if you’ve built things from scratch, led with curiosity and purpose, and want your work to matter for the planet, we want to hear from you.

We strongly encourage women and underrepresented candidates to apply. We believe diverse teams build better products—and better futures.

What You Bring

• Large experience building and shipping technology
• Ability and willingness to navigate between Company strategy and hands on execution
• Proven ability and appetite for managing and mentoring technical teams
• Deep motivation to solve climate problems with engineering solutions
• Fluent in English; French is a plus
• Bonus:Exposure to data center operations, HVAC, energy efficiency, or hardware life cycle design
• Prior startup / scaleup experience

What We Offer

• A founder seat in a mission-driven climate tech startup
• Ownership and influence from day one
• Opportunity to shape technology, culture, and team
• A team of experienced, driven co-founders
• Access to early industry experts, partnerships, and pilot customers as part of Carbon 13 venture builder program
• A high-impact path with global relevance

Next Steps

If you're excited about leveraging your tech talent to one of the most urgent infrastructure problems of our time, we’d love to talk.

Drop us a message with your background or LinkedIn, and tell us what draws you to climate tech and data centers.

Let’s make the cloud greener—together.

Emmanuel & Raphael

→ Apply