Job description
AI Developer (m/w/d)
About Us
BeatSquares transforms large content archives into new formats to reach audiences. A single story can now reach everyone. Our mission is to bring trusted journalistic information and factual content exactly where people need it—through a scalable, modern platform.
Your mission
- You own LLM-powered features end to end, from the prompt to what the editor sees, and you care whether the output actually gets published.
- You get ideas into working shape quickly instead of waiting for the perfect spec, and you stay with them until they hold up in production.
- Build product-facing features across the stack, with a clear bias toward shipping and iterating.
- Work on our multi-LLM pipeline (Anthropic, OpenAI, Gemini, Fireworks/Kimi) and make deliberate calls on model selection, cost and latency.
- Build eval loops against real editorial output: define the baseline, iterate, and be able to show what measurably improved.
- Own traceability across our LLM systems, meaning per-step tracing and prompt provenance, so a bad output can be traced back to the call that produced it.
- Design human-in-the-loop agent workflows: agents propose, the newsroom decides. Nothing goes live autonomously.
- Prototype fast, harden afterwards, and ship your own work to production, including configuration, feature flags and scheduled jobs.
- Bring your own product ideas, rather than only working through tickets.
Your profile
Must-have:
- Demonstrated product instinct and speed: you ship working things and make pragmatic trade-offs.
- AI-native daily development (Claude, Cursor) as a real workflow, not a demo.
- Hands-on experience with LLM orchestration (function calling, agents, evaluation).
- You have built an eval loop, not just written prompts: baseline, iteration, measurable result.
- You have traced LLM behaviour in production (LangSmith or equivalent) and used it to find a real bug.
- You can explain when a deterministic pipeline is the better choice than an agent.
- Python, and the willingness to own the deployment of your own work.
- Fluent English
Nice-to-have:
- Depth in FastAPI. We will also look at it if you have shown something comparable in another language.
- Enough frontend confidence to own a feature end to end.
- Experience with publishing or editorial workflows.
- German.
Why us?
- Direct collaboration with the founders and real influence on product and culture
- An AI-native working environment with first-class tools
- Flexible hybrid setup with an office in central Berlin and remote days
- Competitive salary and equity option
- Flat hierarchy, short paths and fast decisions
