🚀 Join Spark Cleantech : At the Heart of Sustainable Innovation

🌱 Sector: Deep Tech / Cleantech / Innovation

✨ Who We Are

Spark Cleantech is a fast-growing and innovative start-up developing a breakthrough process that replaces the combustion of hydrocarbons in high-temperature industrial furnaces and in materials production with an alternative that is not only fully decarbonised, but also economically competitive and requires only minimal adaptation to existing industrial processes.

Following the successful deployment of an industrial pilot on a client site in 2024 and a major funding round in 2025, we are now building our first industrial standard.

Our ambition is bold: to address, by 2027, sectors that represent 10% of the global CO2 emissions on a multi hundred Bn€ market.

To support this growth, we aim to hire around 20 talented individuals to join our team who share our vision, contributing to a more sustainable world, and our values: positivity, passion, and high standards. We are looking to bring together top experts in their fields to industrialize a technology that comes with exciting challenges.

Our team is passionate, positive, and committed to building a cleaner future. If you’re looking to join a high-impact, ambitious, and innovative project, we’d love to hear from you!

🎯 Your Role

Reporting to the CTO and co-founder of Spark, and as part of the Labs department, your main mission will be to build, develop and lead the Carbon Synthesis team within Spark Labs.

The Carbon Synthesis team is responsible for :

• The aggregation of Spark's knowledge on the nucleation and growth of carbon materials, and the efficient communication of this knowledge to the internal teams that need it

• The development of predictive capabilities and models used by the Reactor team to design and build reactors

• The development and maintenance of Spark's internal simulation tools and thermokinetic models for predicting carbon properties

• The design and operation of experimental validation test benches

• The development and management of collaborations projects with academic partners worldwide

• The detailed analysis of offspecs carbon or operational hazards that will arise from the pilots and first Plants operations, in order to provide answers to requests from the Operation department and suggest appropriate process changes

• Evaluating the feasibility of new carbon products for business opportunities, and leading exploratory projects on advanced carbon black materials

Your main responsibilities will include:

Within the first 6 months

• Build, develop and scale the Carbon Synthesis team

• Ensure the validity of the CFD carbon models being implemented

• Manage existing collaborations, and set-up at least one new collaboration with worldwide actors

• Participate in the test campaigns

Within the 1st year:

• Keep on managing and growing the people within the Carbon Synthesis team.

• Design and deploy a new Experimental Validation Bench.

• Oversee the deployment of Spark internal simulation tools.

• Support the business team during prospect and client discussions.

• Represent Spark at scientific conferences and contribute to the company's technical visibility.

• Contribute to intellectual property development.

• Bring your own ideas and challenge existing choices !

Support missions :

• As an expert, participate in Process studies with the Process team

• Promote and disseminate a strong carbon-material culture across the company

You will works closely with all the Spark teams (Labs, Product & Technology and Operations)

🧠 Your Profile

• Ph.D. in Materials Science, ideally with a strong focus on carbon materials

• Minimum 10 years of experience, including experience in an established Carbon Black/methane plasmalysis company

• Fluent English with strong communication skills and the ability to make complex technical topics understandable

• Strong modeling skills

• Hands-on knowledge of CFD, with the ability to interact with, review, and challenge CFD work

• Hands-on experimental experience in carbon materials

• Proven leadership experience in building, developing, and growing teams

• Strong synthesis abilities and excellent writing skills

• You like to be on the field or on pilot plants to understand and solve real-world-problems

• You deeply want to contribute to the decarbonation of our industry ; and bring decarbonized products at cost-parity with emissive ones

💡 What We Offer

• A dynamic environment within a high-potential Deeptech start-up

• Diverse and evolving responsibilities around an innovative product

• A supportive, talented and passionate team

• A meaningful mission: contributing to a more sustainable future

🧪 Recruitment Process

We keep things fast and simple:

• A brief 15-minute phone call with our HR team to get to know each other and discuss the role and your background

• An in-person meeting with the hiring manager, for a more in-depth conversation

• If the discussion goes well, we’ll follow up with a technical case study that will also allow you to know us better

• Final step: reference checks

📣 A Note on Diversity and Confidence

Studies show that many women only apply if they meet 100% of the listed criteria. The skills listed here are guidelines, not strict requirements.

We’d be delighted to hear from you even if you don’t tick every single box. We're looking to build teams that can innovate and grow together.

All applications are welcome, regardless of background, age, origin or gender, don’t hesitate to apply !