Hey there 🖖

I'm Na'aman Hirschfeld — a Berlin-based startup founder, freelance software engineer, and open-source enthusiast.

I'm a co-founder and CEO of kreuzberg.dev — building a polyglot document intelligence engine with a Rust core. On the freelance side, I work with companies like Armis Security and fincom.co.

I code in Rust, Python, Go, TypeScript, and whatever else the problem calls for.

Kreuzberg

My main focus. Kreuzberg is a fast, polyglot document intelligence engine that extracts structured data from 75+ document formats using streaming parsers and built-in OCR. Available for Rust, Python, Ruby, Java, Go, PHP, Elixir, C#, TypeScript — or via CLI, REST API, and MCP server.

Repo	Stars
kreuzberg
html-to-markdown

Open Source

API Frameworks

Testing & Mock Data

Dev Tooling

Utility Libraries

Broken Dreams

Failed startups and abandoned projects — each one a lesson.

• GrantFlow.AI — STEM grant application writing platform.
• BaseMind.AI — High performance LLM gateway with gRPC-generated clients.
• Devlingo — AI-powered design system.
• ProductHound — WhatsApp-based product recommendation chatbot.

Let's Connect

• Kreuzberg Discord
• LinkedIn
• BlueSky
• nhirschfeld [at] gmail [dot] com