Data Scientist, Agent
Primary stack
Job description
About the Position
Data Scientist, Agent
Location
Stockholm, Sweden; London, United Kingdom
Employment Type
Full-time
About the Role
At Lovable, you own how we measure and improve our AI agent. You build the evaluation systems and experiments that tell us whether a change makes the agent better or worse, and you turn agent telemetry into the fixes that raise success rates and cut errors.
Responsibilities
- Define and own the metrics for agent quality: success, completion, error rates, and the behaviors that drive them.
- Build the evaluation systems and experiment framework that decide whether an agent change ships.
- Turn agent traces and telemetry into concrete fixes, working directly with the agent engineering team.
- Build the tooling and agents that produce these evaluations continuously as the agent evolves.
- Set the bar for how we judge agent behavior where there is no answer key to check against.
Requirements
- Experience or strong interest in LLM evaluation and observability: building evals, scoring outputs, tracing agent behavior, and catching regressions.
- Strong SQL and Python skills.
- Applied statistics and experimentation.
- Comfortable designing A/B tests for agent changes where outcomes are noisy.
- Instinct for what "good" looks like in agent behavior (success, error rates, task completion) and how to measure it when there is no clean answer key.
- Entrepreneurial. Thrives in ambiguity, and works closely with the engineers building the agent.
Our Tech Stack
- Languages: SQL and Python
- LLM evaluation & observability: Braintrust, OTEL tracing, many LLM providers
- Warehouse & events: BigQuery, PubSub
- Analytics & product: Hex, Lovable Apps
- Experimentation: A/B and growth testing
- Cloud: GCP
We Offer
- Competitive salary
- Opportunity to work in a fast-growing, influential company
- Collaborative and innovative work environment
- Professional growth and development opportunities
About the Company
Lovable is the software creation platform that gives people the power to act on the problems closest to them. For decades, turning an idea into software required so much capital, technical fluency, and time that many ideas never came to life. Lovable is the counterargument: a platform for all people with ideas, ambition, and problems worth solving. From solopreneurs to small business owners to teams at companies like Adidas and Zendesk, people have built over 60 million projects on Lovable since its launch in November 2024. And we’re just getting started.
Lovable is one of TIME’s 100 Most Influential Companies and has been recognized on the Forbes AI 50 and CNBC Disruptor 50, reflecting our momentum as one of Europe’s fastest-growing AI companies and one of the most ambitious places to build in this next era of software.
How We Hire
- Fill in a short form and jump on an intro call with our recruiting team
- A call with the hiring manager
- A take-home case study
- A Most Impressive Project session
- Cross-functional interviews with the people you'd work with
- A final conversation with leadership
About Your Application
Please submit your application in English. It's our company language, so you'll be speaking lots of it if you join.
We treat all candidates equally. If you're interested, please apply through our careers portal.
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