Software Engineering - Spontaneous Application

The fashion industry is responsible for 5–10% of global greenhouse gas (GHG) emissions. As pressure for climate action grows, more companies are turning to carbon management tools. But most platforms are generic, lacking the depth needed for driving real change in fashion.

Carbonfact is the Environmental Intelligence Platform built specifically for the textile and fashion industry. We turn messy, real-world business data into environmental intelligence — enabling any fashion company to measure, model, reduce and report on its impact with confidence.

We’ve raised $17M from top-tier investors including Alven, Headline, and Y Combinator, and we’re already trusted by leading brands like Carhartt, GANNI, On, Burton, Armedangels, Jack Wolfskin, and many more.

Carbonfact's engineering team is not actively looking to grow, but we are always open to hearing from strong candidates aligned with our values.

If you think this would be your dream job, apply here!

Engineering at Carbonfact

Our engineering team is lean, autonomous, and product-focused.

• Lean : we believe that a strong small team can achieve a lot. We keep headcount low and impact maximal. We prioritize hard, cut corners intentionally, and try to be pragmatic on where we invest our time.

• Autonomous : we work across the full stack and beyond (e.g doing bits of data engineering, talking directly to customers). We have very little management overhead, close to no meetings, and the power and responsibility to drive our scopes from initial ideas all the way to the finish line. But autonomous doesn’t mean alone: we pair, discuss, review PRs, and share struggles and solutions as a team!

• Product-focused : we respect and leverage technical expertise, but view software as a means to an end, not a goal in itself. We keep things simple and maintainable, buy instead of build when we can, and carefully invest in complexity. We ship fast and deliver improvements to customers as often as we can.

We work in 6-week cycles following the Shape Up method, with cooldown weeks for tech debt and loose ends.

During cycles, we focus on delivering bets —projects with a set time appetite . Engineers own both project management and delivery autonomously, with peer support.

Technical stack

Every day, our software engineers write Typescript , often a bit of SQL , and more rarely dig into some Python code for the parts of our infra we share with our Data team.

We use:

• Node.js and Nest.js on the backend,

• React and Next.js on the frontend,

• BigQuery for the data warehouse,

• Postgresql for the application database.

We deploy on Google Cloud, Vercel and Cloudflare, using infrastructure-as-code (terraform). We are well equipped with various tools to speed us up and handle the busy-work for us: Sentry for monitoring, Cubic for AI code reviews, Aikido for security scanning, etc.

We believe that AI will play a major role in software development and operations, and we leverage the latest technologies to help us achieve more with less. Our team is empowered with generous access to the best tools on the market, and we build and exchange skills and best practices both within the engineering team and across the whole company.

Who you are

• Relevant experience in web or data engineering, infrastructure, typed languages.

• A strong appetite for our mission: tackling climate change.

• Pragmatic, product-minded, and customer-obsessed.

• Strong verbal and written communication skills in English.

• Based in or around Paris.

Work environment

• Learn about Carbonfact’s Principles here .

• We provide the essential modern amenities: MacBook, headset, AI subscription, etc.

• 100% coverage of premium health insurance.

• Annual learning budget to support professional development.

• Team retreats and social events multiple times a year.

• Transparent compensation framework with level-based salary and equity; promotions tied to impact and performance

• Compelling equity package with employee-friendly exercise rights.