Help us reinvent municipal infrastructure – with AI.

At WasteHero, we're on a mission to build the most advanced, intelligent municipal software platform in Europe. Our customers are cities and waste companies – the backbone of public life – and we help them digitize operations, optimize resources, and become smarter every day. Now, we're ready to go AI-first. And we need a builder.

We're looking for a Fullstack AI Engineer who can combine classic engineering skills with modern AI tooling to ship real, production-grade AI agents, flows, and tools – fast. This isn't a research role. This is about building things that work.

What You’ll Do:

• Build internal AI agents that automate everything from public tender qualification to API-based integration flows.

• Use OpenAI (GPT-4o), LangChain, n8n, Supabase, and custom Python/Node scripts to develop real, end-to-end flows.

• Translate domain knowledge (from product, integration, support) into prompt-based tools, scripts, and interfaces.

• Develop backend logic and connect with our main platform via REST APIs, webhooks, and Supabase.

• Collaborate directly with our founder, product team, and engineers to prioritize high-impact use cases.

• Document and test your agents so they can scale across customers, countries, and products.

• Optionally: build or connect frontend UIs via Lovable, Retool, or React.

Who You Are:

• You have 2–4 years of experience as a fullstack or backend developer.

• You've already built real things with AI – agents, automations, internal tools, or API wrappers. (We’re not looking for beginners.)

• You're comfortable with JavaScript/TypeScript or Python, REST APIs, and database logic.

• You’ve used tools like LangChain, GPT, Claude, Supabase, or n8n — and ideally connected them together.

• You love shipping fast, learning fast, and solving real customer problems.

• You think in systems. You see the flow between tools, prompts, users, and data.

• Bonus: experience with public infrastructure, tenders, waste, logistics, or ERP systems.

Why Join Us:

• Work on real-world AI problems — not gimmicks.

• Be part of a small, ambitious, and product-driven team with deep market traction.

• Ship and own projects that get used by municipalities and companies across Europe.

• Help define how AI is applied in one of the most operationally complex and underserved domains: waste & city infrastructure.

• Enjoy full autonomy, fast feedback loops, and the ability to shape the product and stack.

• Located in Aarhus? Great. Prefer hybrid or remote (within CET ±2)? Also great.

Tech Stack You’ll Touch:

• GPT-4o / OpenAI Functions / Claude

• LangChain / n8n / Supabase

• Python / Node.js / TypeScript

• REST APIs (internal and customer)

• Lovable / Retool / React (optional)

• Other tech stacks that can improve efficiency

Compensation:

• Competitive salary based on experience

• Equity/warrants

• Office in Aarhus C with hybrid flexibility

• Real ownership. No bureaucracy.

Ready to build the future of public infrastructure with AI?

Apply here

Let’s make cities smarter — together.