Lawren.AI, legal AI platform

Answers questions about Romanian law with a citation to the exact source and to the version of the text it relied on.

Role
Software engineer, end to end
Scale
18,000+ Romanian legal documents
Period
Nov 2024 to Feb 2026

The problem

Legal research needs answers that can be checked. An answer about Romanian law is only useful when it points to the exact source, and to the version of the law it relies on.

What I built

  • Backend services, document ingestion and frontend integration, end to end.
  • Source-cited RAG over 18,000+ Romanian legal documents.
  • Hybrid document retrieval with version-aware citations.
  • Quality evaluation with golden sets and regression checks.

Technical details

  • Real-time services, background processing and caching.
  • Rust services on PostgreSQL, Redis and Qdrant, with S3-compatible storage.

Stack

  • Rust
  • PostgreSQL
  • Redis
  • Qdrant
  • S3-compatible storage