CareerPlanSign in

Project Lion - Senior Prompt Engineer - Germany (Remote, Part-Time)

Germany🌐 Remote💼 Part-time🗓 2026-03-16 → 2026-09-26

Core

End-to-end technical migration of templates to LLM autoraters using prompt engineering to maximize model performance.

Role type

Senior Prompt Engineer (LLM Migration & Optimization)

Builds

Production autorater systems for template clusters

Domain

AI/ML, Large Language Models, Automated Rating Systems

Deliverable

production ML models

Required skills

Prompt Engineering, LLM tuning, Chain-of-thought reasoning, Few-shot learning, Automated Prompt Generation (APG), Automated Prompt Optimization (APO), Shadowbot monitoring, Accuracy metric calculation (F1, precision, recall), Technical documentation

Preferred skills

Experience with complex template architectures, Edge case handling, Launch readiness justification

Technologies

APG tools, APO tools, Shadowbot, Gold data sets

Responsibilities

Create baseline prompts for complex parent-child template clusters using APG tools; Run and supervise Automated Prompt Optimization (APO) tools, flagging deadlocks or plateaus; Manually draft, test, and refine prompts for edge cases where tooling fails; Monitor shadowbot runs to track disagreements between human and LLM ratings; Run prompt versions against gold data to measure autorater quality and calculate accuracy metrics; Draft technical launch readiness justifications.

Seniority

Senior, hands-on IC

Sourced via lever · Listed on CareerPlan, which tracks 70,000+ jobs from 20+ sources.