Full stack software developer, developer python

This is a full-stack Software Engineer role focused on applied AI, sitting within a 15-person Product and Engineering team at an early-stage B2B construction technology startup. You will own AI features end-to-end, from database schema and LLM optimization through to UI, while also building the platform foundations that let new use cases ship quickly. Build and own end-to-end AI features from concept through production, including document versioning and agentic chat workflows.

Design and implement features across the full development lifecycle: database schema, LLM tuning, evaluation, and UI.

Model and evolve the construction ontology and project graph, including entity resolution across documents such as BoQs, contracts, and drawings.

Build read/write integrations with customer systems such as document management and ERP platforms to complete workflows end-to-end.

Contribute to scalable data pipelines and support native BIM/DWG file processing.

3 or more years of experience as a full-stack software engineer delivering production-grade applied AI features to customers.

• Proficiency with TypeScript, Python, and SQL for building full-stack applications.
• Experience integrating and optimizing LLM APIs (e.g. Experience building data pipelines and ETL workflows for processing unstructured data at scale.
• B2B product experience, ideally in an early-stage startup or as a founder.
• Fluent spoken and written English; German is helpful but not required.
• Experience with document processing, OCR, or multi-modal data ingestion is a plus.
• Compensation & Benefits