Founding AI Engineer

Salary Competitive
Equity To be negotiated

The Role

We're looking for an AI Engineer to architect and deploy the intelligent agents that power our platform. You'll design autonomous systems that analyze customer signals, identify patterns, and make decisions; choosing the right AI techniques and models for each task. This is an on-site/hybrid position in Copenhagen with competitive salary and early-stage equity.


What You'll Build

  • Intelligent agent systems: Build specialized AI agents that autonomously extract insights, classify customer signals, detect patterns, and trigger actions based on the data they process.

  • Multi-model orchestration: Design systems that coordinate between different AI models and techniques. Use LLMs for reasoning and generation, embedding models for semantic search, classification models for categorization, clustering algorithms for pattern detection.

  • Voice intelligence: Architect AI agents that conduct adaptive, context-aware voice interviews with customers, processing conversational data in real-time.

  • Model selection and evaluation: Choose the right tool for each task, whether that's LLMs (Claude, Gemini), custom models, or classical ML techniques. Build evaluation frameworks to measure and improve agent performance.

  • Production deployment: Move agents from prototype to production using Python, FastAPI, Pydantic AI, and GCP infrastructure (BigQuery, Postgres, Cloud Run)


What We're Looking For

  • Technical skills: Experience building production AI/ML systems. Comfortable with Python, cloud infrastructure (GCP preferred), and working with LLMs in production environments.

  • Shipping mindset: You care more about delivering value to customers than perfect architecture. Done is better than perfect.

  • Generalist approach: You're willing to work across the stack when needed. This is an early-stage team where everyone does what's necessary.

  • Clear communication: You can explain technical decisions and trade-offs to non-technical teammates.

  • Startup experience: You've worked in fast-moving environments where priorities shift and you need to figure things out as you go.


Mindset We Value

  • Owner mentality: you take responsibility for your work's impact

  • Bias for action: you move fast, ship, and learn from real usage

  • No ego: you're proud of scrappy solutions that get results

  • Market obsessed: you care about solving customer problems, not politics or titles

  • Organized and focused: you bring structure to chaos and keep momentum

Technology

  • Backend: Python, FastAPI, Pydantic AI, PostgreSQL, BigQuery

  • AI & ML: Large Language Models (Claude, Gemini), Embedding models, Classification algorithms, Clustering algorithms, Multi-model orchestration

  • Infrastructure: Google Cloud Platform (Cloud Run), Production deployment pipelines, Real-time data processing


About the interview

  1. Intro chat with a founder (CTO)

  2. Paid take-home assignment based on a real design problem

  3. 2–3 day paid work trial (in-office in Copenhagen) to collaborate with the team and assess culture fit ‍


Compensation

Competitive salary and early-stage equity

For more information or questions please contact us at career@usepropane.ai

Perks and benefits

This job comes with several perks and benefits

Near public transit
Near public transit

Equity package
Equity package

Paid holiday
Paid holiday

Remote work allowed
Remote work allowed

Social gatherings
Social gatherings

Central office
Central office

See all 8 benefits

Working at
Propane

We've all been in that meeting. The one where everyone has a different take on what to build next. Someone quotes a customer call from last month. Someone else pulls up a support ticket. A third person has a Notion doc nobody else has read. Nothing connects. The decision gets made on gut feel — and you leave the room slightly unsure you got it right. Dennis lived that as a CPO for years. The context never made it to the room. Customer evidence scattered across six tools. Feedback from a €500 account carrying the same weight as a €50k one. Insights from last quarter's research buried before anyone shipped anything. He built Propane because that problem felt embarrassingly solvable — and nobody had solved it. The idea is simple: PMs deserve the same AI-native environment that engineers got with Cursor. A workspace where customer signals, company context, and agents that actually know your product work together — so you spend your time deciding, not searching. Propane connects your stack and builds from there. Signals from real customers, weighted by revenue. A shared surface to reason, write specs, and align the team. Agents that remember what your customers told you last quarter and help you act on it. We're a small team in Vesterbro, Copenhagen — a few minutes from the central station. Flat, direct, and low on process. Everyone owns something real. We hire makers — people who'd rather figure something out than wait to be told how, and who find genuine satisfaction in shipping something that didn't exist last week. Previous founders tend to feel at home here pretty quickly. Pre-seed, backed by people who've built and scaled companies like Lovable, ElevenLabs, Pleo, GameAnalytics, and Neurons. Early days — which means what you build now shapes what this becomes. If you want to shape what it means to be a PM in the age of AI — and you'd rather have real ownership over that than a comfortable title at a bigger company — we'd love to hear from you.

Read more about Propane

company gallery image