Product Engineer Engineering · Copenhagen ·

Proper ApS; København; Hybrid; DKK 558,000 - 725,000; Full time

Benefits offered by this job

Equity

Office in Copenhagen

Daily lunch included

Job summary

Rumli is building an AI-native property management platform in Copenhagen. We seek a product engineer to turn 1,000 customer insights into scalable features, shipping end-to-end from database to UI. You will work closely with our co-founder to shape the product direction and translate customer pain into actionable builds.

The role emphasizes independent work, strong product thinking, and frontline customer interaction, with a central Copenhagen office and an equity offering for employees.

Qualifications

• Proven ability to think in terms of product profitability and user value.
• Experience shipping products used by customers and measurable impact.
• Comfortable engaging with customers to gather feedback.
• Ability to design and scope features with minimal spec input.
• Experience integrating AI features into product workflows.

Responsibilities

• Talk to customers and property managers to identify real bottlenecks.
• Decide what to build, prototype, ship, measure, and iterate.
• Own features end-to-end from database to UI.
• Build AI into core product features.
• Collaborate with co-founders on product direction.
• Work independently on ambiguous problems without waiting for a spec.

Skills

Product thinking

Product mindset

Proven shipping experience

Customer communication

Coding agents experience

Independent work

Tools

TypeScript

Next.js

NestJS

PostgreSQL

AWS

Job description

A property manager can handle 600 tenants. That's the industry limit. Why? Because the work scales linearly: matching bank transactions to invoices, chasing late payments, answering tenant questions, coordinating repairs, preparing legal notices, renewing leases. More tenants, more of the same manual work.

With AI, that limit disappears. And both landlords and tenants get a better experience.

About Rumli

Eight years in property operations. ~1,000 customers across Denmark, the Netherlands, and Germany. We know this industry: the workflows, the pain points, the regulations.

Now we're making a big move: becoming a property manager. Tenant communication, bookkeeping, coordinating repairs. We handle it all. A landlord shouldn't chase late payments or find a plumber at 10 pm. We do it for them.

We're building an entirely new platform to power this. AI-native from day one. Profitable, real customers, expanding across the Nordics.

Why this is interesting

Property management is a great domain for a product engineer. Thousands of similar transactions, pattern-based decisions, templated documents. And 1,000 customers who will tell you exactly where it hurts. Years of domain knowledge, ready to turn into a product.

We ship with AI agents built into the workflow. Our codebase has custom skills to improve our workflow. AI writes a lot of the code; we review it. That means the slow part of building isn't writing code anymore. It's knowing what to build. That's what this role is about.

The role

You are autonomous and independent, working with the team to solve property managers' pains and make them as efficient as possible.

• Talk to customers and property managers. Find out what actually slows them down
• Decide what to build, then build it. Mockup, prototype, ship, measure, repeat
• Own features end-to-end. Database to API to UI
• Build AI into core product features
• Work directly with our co-founder on product direction

We need someone who looks at a messy problem and figures out what to build, and doesn't wait for a spec.

Tech stack

TypeScript everywhere. But does it even matter anymore?

• Frontend: Next.js, React, Shadcn, Tailwind CSS
• Backend: NestJS, PostgreSQL, Drizzle ORM
• Infra: AWS Lambda, CDK, RDS, EventBridge, SQS

What we're looking for

• Product thinking. You understand what it takes to build a profitable product. You are not here just to handle tickets.
• Strong product mindset. Agents can code, but they need scoping and steering.
• You've shipped things people actually use, and you can show them.
• Comfortable talking to customers.
• Experience with coding agents.
• Work independently.
• Copenhagen-based (on-site).

Big plus: AWS, AI experience (prompt engineering, RAG, agents), fintech/proptech background, a side project you're proud of.

Compensation & benefits

• Compensation: 50–65K DKK, depending on experience and demonstrated competencies
• Equity: Employee warrants offering real ownership in the company
• Workspace: Centrally located Copenhagen office
• Perks: Daily lunch included

Why Rumli?

Real customers. Brand-new codebase. Small team where your decisions matter.

We're rebuilding from the ground up with AI as the foundation. If you want to decide what property software should do, not just build what someone else specified, reach out.