The Destination For Careers In Venture Studios

About Marble

Marble is a climate tech venture studio. We partner with scientists, engineers and operators to create companies solving hard climate problems in the world's largest industries.

Our first 10 companies are building transformative products across energy, industry, agriculture and climate resilience. 100% have been successful in raising follow on to date. We are looking to partner with exceptional individuals to create our next venture.

Unlocking Geothermal and Waste Heat to Power

Global electricity demand is due to triple by 2050 as electrification and living standards grow. Already today, the world is facing the strongest load growth since the mid-20th century. While wind and solar continue to scale rapidly, intermittent renewables alone cannot meet the capacity and reliability needs of this rising demand. Clean, firm resources are also required.

Geothermal and waste heat are sources of clean, firm electricity that are abundant and often located near demand, but remain largely untapped today relative to their potential. Their deployment is limited due to the low conversion efficiency of low-temperature heat as well as the traditional power plants in use today: custom-built, with high upfront costs, and long lead times.

In other words, the bottleneck to scaling these clean, firm power sources isn't just about accessing low-carbon heat – but also how we convert this heat into power.

By rethinking power plant design and cost structure from the ground up, we believe that we can unlock a new generation of power plants from lower temperature sources. By drastically reducing capital costs, simplifying designs, and boosting efficiency, we can deploy fast, cheap, clean firm power almost anywhere - while enhancing grid stability and increasing energy security.

We are exploring novel approaches to deploy next-generation power plants to accelerate the uptake of geothermal and waste heat for clean power generation.

The Opportunity

We’re particularly interested in innovations that drive down upfront costs—such as reducing turbine and balance-of-plant expenses, or shortening construction timelines— to enable the deployment of next-generation geothermal and waste heat recovery.

That said, we’re equally excited by bold, creative approaches that rethink what a power plant can be—from modular architectures to new thermodynamic cycles.

Opportunities we are considering to boost plant performance:

• High-efficiency thermal cycles: to improve conversion efficiency and reduce costs by innovating in turbines, working fluids, and thermodynamic cycles tailored to low- and mid-enthalpy heat sources (eg. Organic Rankine Cycles and sCO2).
• Optimised balance-of-plant systems: to minimise parasitic loads, reduce system complexity, and improve thermal-to-electric conversion efficiency by streamlining auxiliary systems—heat exchangers, pumps, cooling systems, and controls.
• Digital twins and AI-driven plant optimisation: to improve performance, reliability, and equipment lifetimes through high-resolution sensing, real-time digital twins, and machine learning models for predictive maintenance, smarter dispatch, and dynamic control.

Opportunities to accelerate deployment and reduce complexity:

• Accelerated construction and commissioning: to reduce time-to-power and installation complexity with on-site assembly, standardised units and designs, digital simulation tools, and integrated project delivery models.
• Modular and prefabricated components: to facilitate project execution and lower capital costs by delivering modular, replicable units — such as turbines, balance-of-plant equipment, control rooms, that can be rapidly deployed across sites.

We are looking for a Founder in Residence to join Marble and explore modern power plant approaches for lower-temperature applications and accelerate the deployment of these clean, firm, and widely available energy sources.

Skills & Profile

We are looking for an entrepreneurial engineer with relevant technical expertise and/or industry experience in the power sector, or related fields, with a creative take on the problem. Your mission: to further explore some of the opportunities outlined above and create a high-impact climate company with Marble.

You may come from the power sector directly, or from an adjacent field where your technical background and experience can bring a fresh perspective on how to redesign and scale the modern power plant.

Examples of relevant backgrounds:

• Mechanical engineering / turbomachinery with hands-on experience in designing, modelling, or deploying turbines, power cycles, thermal cycles (e.g. ORC and sCO2), and working fluid selection —particularly in the context of low- to mid-temperature applications.
• Chemical / mechanical / process engineering with a background in designing, modelling, or deploying thermal systems, heat recovery systems, systems integration, and balance-of-plant infrastructure—including pumps, heat exchangers, cooling systems, and piping networks.
• Modelling / control / software engineering with expertise in power plant instrumentation, thermal modelling, simulation, digital twins, or control systems. Ideal for predictive maintenance tools, operational optimisation, and AI-driven plant control.
• Construction / modular infrastructure / prefabrication with a background in industrial design, civil engineering, or modular systems development and deployment. Relevant to accelerate build times and reduce project complexity through innovative plant construction methods.

We encourage you to apply even if you don’t feel you meet all requirements. Above all, we value intelligence, creativity and Founder Potential.

Especially if you recognise yourself below:

• You can’t wait to start your own company (or your next one)
• You are a pragmatic optimist on a mission to tackle climate change
• You are outcome focused and action oriented - you make things happen
• You are a great communicator - you can convince others to follow you
• You love to break down ambitious goals into actionable milestones
• You understand that innovation starts with people - not ideas

➡️ Apply Here

What We Offer

As a Founder-in-Residence, you will join other stellar individuals who also believe in the need for deep tech solutions to solve hard climate problems.

Together, we would be scoping high potential approaches before converging on the most promising one and finding your future co-founders

We offer (among other things)

• A €2,500 to €3,000 monthly allowance during the programme
• A €250,000 pre-seed investment on startup creation if you’re successful. You and your team will own 80% of the company at pre-seed.
• **Full-stack support in our venture creation programme**Mentorship and guidance at every step of the way Hands on support across technology and market research, landing interviews with experts and customers, techno economics, roadmap and scale up strategy, IP strategy, team building, advisor sourcing, and more Access to an unparalleled network across science, industry, talent, investors, mentors, climate tech founders, curated vendors and suppliers Access to our research insights, knowledge base and founder resources Weekly check-ins, work sessions in our Paris HQ (or remote) and continuous peer learning with other programme participants
• Seed Fundraising support after the programme. Introductions to the best seed investors from our network and help with term sheet negotiation.
• Founder Visa sponsorship if you wish to relocate to France. Remote participation is possible, preferably from Europe and with regular in-person meetings.

How to Apply

We are looking for the best candidate - so you are welcome to apply as soon as possible.

➡️ Apply Here or see the Programme Structure

We believe that a diverse group of minds is key to solving the climate crisis. We encourage women and people of colour to apply.

Studies have shown that under-represented candidates are less likely to apply for an opportunity unless they feel they meet every single qualification.

We are committed to building a diverse, inclusive and mission-driven cohort. If you’re excited about the programme but your past experience doesn’t align perfectly with what you read on our website, we encourage you to apply anyways!

FAQs

For a full list of FAQs, please visit our website.