Founding Full Stack Engineer @ ClimateTech Startup

Why Now?

Buildings are the largest energy consumers in Europe, making them CO₂ monsters. They account for 40% of our energy usage, causing 36% of all EU CO₂ emissions. That's why the decarbonization of buildings is essential for a sustainable future.

Why Us?

At VARM, we are pushing insulation forward. We help our customers save up to 50% on their heating costs and decrease their CO₂ emissions. To scale insulation, we just closed a strong Seed Round with top-tier investors. Join our mission now to change an entire industry for good.

Our Goal?

Becoming Europe’s insulation champion and insulate 1 million houses over the next 10 years! Now is your chance to be part of our vision. Join us in building a market-leading company in the climate sector. Unf*ck the planet with us and actively contribute to slashing CO₂ emissions from buildings.

Location: Berlin (Hybrid possible)

Experience Level: 3-5 years (Startup experience preferred)

Languages: English (required), German (a plus)

Start Date: As soon as possible

What You’ll Be Doing

You’re not just looking for a job. You’re looking for a product and a mission worth building. As our first engineer, you’ll be shaping the digital backbone of a company aiming to become Europe’s insulation champion. This isn’t just another full stack role. It’s a chance to co-create the systems that power every part of our business.

The three biggest challenges in the first year:

1. Build Our Core Platform
Lay the foundation for a robust, scalable web platform by integrating no-code/low-code tools where they make sense, and custom code where they don’t.

2. Create an Offline-First App:
Collaborate with Product and our founders to deliver a mobile-first experience that’s fast, intuitive, and functional in rural, low-connectivity areas.

3. Optimize Processes with AI Agents:
Use generative AI to streamline unpredictable workflows—for instance handling emergencies or qualifying buildings based on construction plans.

Here’s what you’ll dive into:

• Build what matters - Work with our business automation team, who rapidly prototype using no-code/low-code tools. You’ll take the validated ideas and translate them into clean, maintainable code that scales
• Shape the customer experience across the insulation journey – From first website visit to project handoff, your work powers our digital funnel and turns the website into a true growth engine
• Develop tools that get used daily - Whether it’s a field technician logging insulation data offline or an ops manager overseeing dozens of projects, you’ll create tools that directly support their work
• Code smarter with AI - Use environments like Cursor, Lovable, and other AI-assisted tools to accelerate development and build intelligent agents that reduce manual effort
• Collaborate across the entire business – Partner with Product, Marketing, Sales, Partnerships, Ops, and Finance to turn ideas into features—with real impact and immediate feedback
• Help choose our tech stack – Almost no legacy systems to untangle. You’ll help define how we build from day one
• Work transparently – We share performance and business KPIs openly. You’ll always understand the why behind every feature you build

• 3 – 5 years experience building web/mobile applications in a fast-paced or startup setting
• Strong full stack skills – modern frontend, backend, APIs, and databases
• Hands-on, product-minded engineer with a “build, test, learn” mindset
• Open towards no-code/low-code tools and excited by AI-native workflows
• Tech-savvy, curious, and thoughtful in choosing the right tool for the job
• A strong communicator who thrives in cross-functional teams

• Competitive compensation package: We will offer you a mix of cash and stock options based on your appetite for upside
• ️ Be part of our core-team, building in a super-hot phase of an early-stage climate-tech startup
• Make an impact at VARM: Shape our culture and the way we work and collaborate together. Nothing is set in stone – you have a direct impact, while we are growing and building together
• Make an impact on the earth: Do you want to make a difference in the fight against climate change? Become part of the solution and actively shape the energy transition
• Onsite first, but hybrid work keeps us flexible: We believe that in-person collaboration is an integral part of working together, but offer flexibility for remote working
• Grow with us: We take your personal development seriously, which includes being mentored and challenged in regular founder feedback sessions
• Start–up culture: We offer you hybrid work, training, team events, and a great office setup in the heart of Kreuzberg
• Discounted fitness programs
• Diversity & Inclusion: We value diversity and welcome people from all backgrounds