At Quatt, we’re building the tech behind the energy transition.
Our mission? To help 3 million households switch to sustainable home energy by 2030, and we’re only getting started! From a team of 25 to 300+ in just a few years, we’ve proven that speed and impact can go hand in hand. 🌱⚡

You design it, AI writes most of the code, and you own it in production. You’ll build QuattOS, the platform that turns a sale into an installed heat pump, alongside AI agents and features that help run our business. From planning and work preparation to stock and payments, your work will help our teams bring sustainable home energy to more households.

You’ll work in a small team with a product owner and the people who use what you build. This is a hands-on individual contributor role: you’ll stay close to the code, bring the architecture and judgment, and set the quality bar. An idea on Monday could be live for real users by Friday.

Stack: TypeScript, Node.js (AdonisJS), PostgreSQL and React/Next.js on AWS, integrated with platforms such as HubSpot, Skedulo, NetSuite and Stripe.

What you’ll do

• Build and evolve QuattOS: develop the services and tools behind our sales-to-installation process, covering planning, work preparation, stock and payments.

• Design for growth: think through data models and services before building them, so they scale with volume and stay flexible as the business changes.

• Connect our platforms: build reliable integrations using webhooks, queues and background workers, with careful handling of retries and idempotency.

• Build with AI every day: direct AI agents to write code, tests and reviews. You’ll review their output as carefully as if you wrote it yourself.

• Own what you ship: release to production every day, write thorough tests, monitor what you build and debug production issues.

• Shape our infrastructure: work with the team to make decisions about AWS, infrastructure as code, security and cost.

• Stay close to your users: talk directly with sales, work preparation, installers and homeowners to understand their needs and improve what they use.

• Put AI to work: develop agents and features that take on parts of our business processes.

What you bring

• A degree in Computer Science or a related field, or equivalent technical depth you can demonstrate.

• 3+ years of experience building production software, including production code you’ve personally written within the last two years.

• An AI-native way of working: you use Claude Code, Cursor or similar tools every day, with your own agents, instructions and workflows.

• The judgment to recognise where AI makes mistakes that are easy to miss, and the technical depth to put them right.

• An understanding of how architecture and infrastructure decisions affect data, security, cost and scale.

• A hands-on mindset: you want to design, build and improve software every day.

What’s nice if you bring it

• Strong TypeScript skills, with backend depth in Node.js and experience with SQL and PostgreSQL.

• Experience with AWS and infrastructure as code, such as Pulumi or Terraform.

• Experience launching LLM features in production, including retrieval (RAG), tool use, agents and evaluations.

Why you’ll love working at Quatt 💚

• Make an impact: your work will directly help make sustainable home energy solutions more accessible.

• Opportunities to grow and develop your career in a rapidly expanding company with a sustainable mission.

• Be part of a fast-growing, ambitious scale-up on a mission to fight climate change.

• An open organizational culture where you can hang out and discuss ideas with everyone, from installer to founder.

• Pension plan (ASR growth pension): employer contribution of 4% in 2026 and 6% in 2027.

• Stock Appreciation Rights: you will receive SARs with a five-year vesting period.

• Flexibility to work hybrid, with 4 days in the office and 1 day from home.

• 25 paid holiday days + 8% holiday allowance.

• Free vegan/vegetarian lunch in the office daily. 🥗

• Travel compensation of €0.23/km or an NS Business Card. 🚆

• Informal culture with monthly drinks and office parties. 🍻

• Yearly discount on Quatt products.

• Referral bonus of up to €2,000 when referring new colleagues.

• Work in an international team with people from over 30 nationalities. 🌐

Next steps

Our process includes a short introductory call to hear more about your motivation and interests, followed by two additional interviews. If we feel your profile doesn’t match our requirements, we’ll let you know by email.

Questions?

If you have any questions about the role, reach out to [email protected].