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Freelance AI Agent Evaluation Engineer

Confidential company · Stuttgart · Posted Aug 3, 2026

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Public summary

This is a freelance opportunity to work on evaluating AI coding agents by creating and refining tasks within realistic developer environments. The role involves building virtual coding scenarios, designing evaluation criteria, and writing tests to assess AI solutions accuracy. Applicants should have over 5 years of software development experience with proficiency in Python (FastAPI), JavaScript/TypeScript (React), and related technologies, as well as experience in functional and integration testing. English proficiency at B2 level or higher is required. The work is project-based with flexible scheduling and payment up to $50 per hour depending on experience and pace.

Location and work setup

Location
Stuttgart
Remote status
Remote
German requirement signal
No German Required Detected
Detected job language
English

Salary

USD 50.00 - 50.00 hour

Responsibilities

Create realistic virtual developer environments representing a company's codebase and context. Design AI evaluation tasks with clear definitions of success. Write and refine tests that accept all valid AI-generated solutions while rejecting incorrect ones. Analyze AI performance and iterate on tasks based on quality assurance feedback to ensure fairness and robustness.

Qualifications

Minimum 5 years of professional software development experience. Strong knowledge of Python (FastAPI), JavaScript/TypeScript (React), Docker, Postgres, Kafka, and Redis. Proven experience in writing functional and integration tests. English language proficiency at B2 level or above. Ability to critically evaluate AI-generated code and create challenging development tasks that differentiate AI capabilities.

Skills

Python FastAPI JavaScript TypeScript React Docker Postgres Kafka Redis Functional Testing Integration Testing English B2+