# Backend Engineer - AI Agents (all genders) at Lime Tech

> Germany · Unspecified · Backend · open. Source: https://alderhq.app/jobs/personio%3Alime-tech%3A2832404 (read 2026-11-11).

## Facts (observed)

- Company: [Lime Tech](https://alderhq.app/companies/lime-tech)
- Location text: Köln
- Where it can be done from (inferred): Germany (evidence: "Location: Köln")
- Posted: 2026-10-07 (35 days ago)
- First seen by alder: 2026-11-07 · last verified: 2026-11-08
- Reposted: 0 times · edited: 0 times
- Apply on the employer's site: https://lime-tech.jobs.personio.de/job/2832404
- Skills listed (inferred): TypeScript, Python, LLMs

## Pay and sponsorship

- Posted pay: not posted

## Description (the employer's text)

### What You'll Be Working On

- Within the backend team, you're the go-to person for AI and work closely with Product.
- You further develop our AI agents and automation solutions such as Connect AI, from the agent loop and tool calling to context management.
- You help shape our AI architecture and make sure we can work flexibly with different LLMs.
- When it comes to quality, we rely on evals with real customer conversations and methods like LLM-as-a-judge. You help expand this area so every new version gets measurably better.
- Through APIs, MCP tools and website crawling, you give our agents the knowledge and tools they need.
### What Makes You a Fit

- You have at least five years of backend experience, including one year building AI features based on language models that people use every day.
- You know Python and ideally TypeScript.
- You’ve built AI agents before and know context windows, tool calling and prompting from hands-on work. Agent libraries like Pydantic AI might already be part of your toolkit.
- You’ve worked with RAG and vector databases yourself.
Evals and observability are familiar ground for you, whether with Langfuse, Arize Phoenix or a setup you built yourself.

- Experience with AI gateways like Bifrost or LiteLLM is a nice extra.
- You follow what’s happening in AI, try things out quickly and take ownership of your topics.
- You’re fluent in German and English.
### What’s in It for You

- 600 € health budget per year, including 24/7 medical advice — also for family members in your household
- Subsidised Urban Sports Club membership (20 € monthly contribution)
- Learning budget for courses, books and conferences
- Free access to Udemy, Masterclass and language learning apps
- Leadership programmes such as "Next Gen" and "Effective Manager"
- Weekly FIKA, movie nights, book club and regular get-togethers and team events
- International summer party together with our colleagues in the Nordics
- Office-first setup: 3 days in our Cologne office at the MediaPark, 2 days remote
- 360° view across Cologne from the 14th floor
- Workation within the EU
- Snacks, cereal bar and drinks in the office
- Company pension scheme via Zurich with a 30 % employer contribution
- Job ticket or mobility budget, plus free parking at the MediaPark
- Corporate benefits
- 28 days of holiday, plus Christmas Eve and New Year's Eve off
- Up to 5 days of special leave for important life events

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Data: alder (https://alderhq.app). Cite https://alderhq.app/jobs/personio%3Alime-tech%3A2832404 and the date you read it. Observed facts come from the employer's own listing; location reach, level, family and skills are inferences.