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SL14-SL/README.md

Hi, I'm Steffen

I'm a freelance Python & AI Engineer building document assistants, natural-language data tools, and reliable ML systems.

I turn documents, structured data, and ML prototypes into applications with source references, tested behavior, reproducible workflows, and practical deployment options.

Featured Projects

RAG Document Assistant

An assistant for answering questions about company documents with source references. Includes PDF ingestion, local semantic retrieval, Ollama-based generation, and retrieval evaluation.

View repository

LLM Customer Segmentation Assistant

A natural-language interface for exploring customer data and comparing segments. Includes request validation, clarification flows, explicit handling of unsupported filters, and end-to-end evaluation.

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Classification & Business Decisioning Blueprint

A customer churn system combining predictions with recommended retention actions and expected-value outputs. Includes API serving, model promotion, monitoring, and policy-driven retraining.

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Time Series Forecasting Blueprint

A sales forecasting system with time-series features, XGBoost training, forecast serving, monitoring, and retraining workflows. Includes infrastructure and deployment workflows for Google Cloud Run.

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Reusable MLOps Project Template

A Copier template for forecasting and classification projects with three configurable tiers. Provides reusable serving, model management, CI/CD, monitoring, and infrastructure components, validated across all six variants.

View repository

Technology

Python · FastAPI · Streamlit · Ollama · sentence-transformers · MLflow · Prefect · Docker · GitHub Actions · Terraform · Google Cloud · Prometheus · Grafana

Let's Work Together

I'm available for freelance projects involving internal document assistants, natural-language data tools, prediction APIs, and deployment of AI or ML prototypes.

My repositories demonstrate these capabilities through portfolio projects and reusable reference implementations.

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  1. mlops-churn-prediction mlops-churn-prediction Public

    Production-ready MLOps blueprint for classification and business decisioning with FastAPI, MLflow, Prefect, Docker, monitoring, retraining, Terraform, and Google Cloud.

    Python

  2. mlops-sales-forecasting mlops-sales-forecasting Public

    Production-ready MLOps blueprint for time series forecasting with FastAPI, MLflow, Prefect, Docker, monitoring, automated retraining, Terraform, and Google Cloud Run.

    Python

  3. llm-customer-segmentation-assistant llm-customer-segmentation-assistant Public

    Local LLM assistant for customer segmentation: natural-language questions, clarification dialogues, validated read-only SQL, and CSV exports. Built with Ollama, DuckDB, and Streamlit.

    Python

  4. rag-document-assistant rag-document-assistant Public

    RAG document assistant for company documents with source citations, local semantic retrieval, Ollama-based generation, and retrieval evaluation. Built with Python and Streamlit.

    Python

  5. mlops-project-template mlops-project-template Public

    Reusable Copier template for production-oriented forecasting and classification systems with FastAPI, MLflow, monitoring, CI/CD, Terraform, and Google Cloud.

    Jinja