Sebastian L.

Shunter locomotive driver in the heavy industry's works railway operations, permanently employed at ArcelorMittal in Duisburg-Ruhrort. Operational responsibility for shunting operations, train formation, and in-plant logistics in shift operations. This role provides me with deep insight into the pragmatics of industrial processes, shift communication, and the real-world requirements of small and medium-sized businesses — context that flows into my software development for SMEs.

Independent development of custom software and AI tools for SMEs and solo self-employed individuals. Focus: Solutions that automate or simplify a specific business process.

Technology Stack: Python with FastAPI for backend logic, TypeScript and React for frontend, PostgreSQL as database, Linux server (Hetzner) for hosting. Delivery as hosted service or source code for self-installation.

Own Projects and Tools: AI-powered research and aggregation tools, web scraping pipelines for data from public sources, workflow automation, data processing and enrichment, custom tools for specific business requirements.

AI Integration: Integration of language models via APIs (Anthropic Claude, OpenAI, Google Gemini, Mistral) for classification, summarization, data extraction, automated text generation, and research. Selection of the model based on the use case — cost-effective models for high volumes, high-performance models for complex tasks.