Alexander Hafer

One Data is a SaaS/Consulting company. My main accomplishments: - Won a company-wide LLM Hackathon. - Developed an internal documentation RAG Q&A chatbot. - Developed a PoC RAG chatbot for a German automotive manufacturer. - Significantly contributed to two optimization projects for a German big pharma client — budget planning and material procurement planning — with full-stack development (frontend & backend). - Built data pipelines for preparation, processing, merging, and quality checks (Stability PoC f

- Data gathering and preprocessing (SQL, Web-scrapping, Pandas). - Exploratory Data Analysis (EDA). - Data visualization (Matplotlib, Seaborn, Plotly). - Statistical analysis and testing (SciPy, A/B-testing, etc.). - Machine Learning: cross-validation, hyperparameter tuning, feature importance evaluation (scikit-learn)

- Equipment automatization with Python and LabVIEW. - Time-series processing and visualization (sensors data) with Python (Pandas, Matplotlib). - Nanomaterials development, application, and characterization.

- Equipment automatization with Python and C++. - Sensors data analysis using Python (Pandas, Matplotlib). - Nanomaterials development, application, and characterization.

Research on graphene and metal oxide semiconductive gas sensors. Equipment establishing and automatization, data postprocessing with Python.

I'm a participant of a master's dual degree programme between NTUU "KPI" and Korea Institute of Science and Technology (KIST).