Jobs / Summary

Freelance Data Scientist (Python & SQL) – AI Trainer

Confidential company · Hamburg · Posted May 14, 2026

Public summary

A freelance opportunity for experienced data scientists proficient in Python and SQL to work on project-based AI tasks including designing and solving real-world data science problems across multiple industries. Requires expertise in data science tools and methods, strong English skills, and experience with AI technologies. Work involves part-time, non-permanent projects with flexible hours and competitive hourly pay.

Location and work setup

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

Salary

USD 58.00 - 58.00 hour

Responsibilities

Design and develop computational data science problems simulating real-world analytical workflows; create Python programming challenges using standard data science libraries; ensure problems are computationally intensive and reproduce consistent results; base problems on real business challenges such as customer analytics, risk assessment, fraud detection, forecasting, and optimization; cover entire data science pipeline from data ingestion to deployment considerations; incorporate big data processing and scalable computational approaches; verify solutions with Python and statistical methods; document problem statements clearly with realistic business contexts and verified answers.

Qualifications

Minimum 5 years of hands-on data science experience with measurable business impact; portfolio showcasing completed projects and publications; expert-level Python programming and SQL skills; deep understanding of statistical analysis and machine learning algorithms and applications; experience with Generative AI technologies including LLMs, retrieval-augmented generation, prompt engineering, and vector databases; knowledge of MLOps and model deployment best practices; familiarity with frameworks such as TensorFlow, PyTorch, and LangChain; strong English language proficiency at C1 level or above.

Skills

Python SQL Pandas Numpy Scipy Scikit-learn Statsmodels Matplotlib Seaborn Statistical Analysis Machine Learning GenAI LLMs RAG Prompt Engineering Vector Databases MLOps TensorFlow PyTorch LangChain