Head of Engineering
Userlink ApS
About Userlink
Userlink runs AI agents in production at several hundred Nordic webshops, including Bahne, XL-BYG, Coolshop and Bygma. The agents handle the customer dialogue before and after the purchase, and every conversation ends up as structured data on demand and purchase barriers. The team is based in Odense.
The brain
The agents are the arms. The next layer is a system that brings together every signal about a webshop and its customers: conversations on chat, email, phone and social, on-site behaviour, orders, returns and reviews.
The system identifies the moments where a sale is won or lost and intervenes while the session is still live. It scores answer coverage per product and closes the gaps, quantifies objections and unmet demand, and traces returns back to the expectation that broke.
Learning happens across all webshops, more than six million visits a month, where patterns become visible that no single shop has the traffic to see. Every intervention is measured against a control group. The patterns are shared, the data stays with each shop.
The hard problems are retrieval and evaluation of LLM output at scale, data isolation when patterns are shared across customers, latency in real-time flows, and attribution that holds up under scrutiny.
The stack
Java with Spring Boot, React and MongoDB, with language models and vector search on top. Moving the backend to C# and .NET is under consideration.
The role
Technical ownership of the platform: architecture, code quality, operations, security and prioritisation, combined with hands-on development every day. Standards for review, testing, monitoring and releases, and recruiting the next developers.
Decisions are made on arguments, not titles. Ideas get challenged regardless of where they come from, and the best one wins.
Profile
Several years of designing and running SaaS systems in production, with ownership of architecture and uptime
Solid backend experience in Java or C#, plus React
LLM-based features shipped to production, with systematic evaluation and improvement
Cloud infrastructure, CI/CD and incident handling
AI-assisted development as part of the daily workflow
The person
Dreams of owning and building a company
Ideally has tried starting something and knows what it takes
Thinks like a founder, not an employee
Happily gives more than a regular job asks for, because it is fun
Says things as they are, and can take the same in return
Takes ownership and looks for solutions rather than excuses
Curious, learns fast and has a positive mindset
What we offer
Competitive salary
Equity
Short decision paths and a high degree of technical freedom
Office at Storms Pakhus in Odense
Application process
We take the time it takes to find the right match.
Introductory conversation
Technical test
Conversation about expectations and terms
Send a short description of a system you have owned in production, and an architectural decision you would make differently today, to jobs@userlink.ai.