Founding engineer at Vesta - Join us to 10x Solar & Heat Pump adoption

The mission

Vesta is building the operating system for building electrification. Our platform helps solar installers and clean energy professionals deploy sustainable solutions 10x faster through AI, advanced 3D modeling, and intelligent automation. In less than a year, we've:

• Grown from €0 to €400k ARR without external funding
• Helped contractors save 10,000 tons of CO2 (1% of our 2030 goal)
• Built a product that cuts solar installation planning time from hours to minutes

Our ambition? Save 1M tons of CO2 by 2030 by making the electrification of buildings 10x faster through AI, software and 3D data.

Why this role matters

As our first developer hire, you'll work directly with our CTO to:

• Architect and build core features that define our product's future
• Shape our technical culture from the ground up
• Own critical decisions that will impact millions of homes
• Solve the most complex workflows with elegant code and AI.

You're the type of engineer who:

• Ships product improvements daily, not quarterly
• Thinks in systems and outcomes, not just code and features
• Solves complex problems with elegant solutions
• Moves fast and takes ownership
• Has strong opinions about code quality, loosely held

Our tech stack

While we believe great engineers can master any stack, we're currently working with:

• JavaScript (React, Next.js) and Python for our core platform
• WebGL for 3D
• Large Language Models for automation
• Cloud-native architecture (AWS, Google)

Why join us?

• Make an Impact: Your code will directly contribute to combating climate change.
• No bureaucracy: Work directly within a small team of top engineers and interact directly with our users.
• Solve hard problems daily: We value creativity over mimicry.
• Own your work: We're outcome-focused. Less bureaucracy, more building.
• Ownership: Significant equity in a fast-growing company

The interview process

1. Initial conversation with CEO (45 min)
2. Technical challenge: Build a mini-feature (4 hours)
3. Onsite (1 day)

Next steps

Interested? Reach out directly at benjamin@vesta.eco — we're excited to hear from you.

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Note: We're moving fast. If this resonates, don't wait to reach out.