Punch-Out Integration Engineer (m/w/d)
Summary
Build and maintain Python-based web crawlers and PunchOut integrations to connect enterprise suppliers to a B2B procurement platform, reverse engineering APIs and normalizing product data.
Build the connectivity layer powering enterprise procurement.
At Lio, we're building the AI workforce for procurement. As a Python Web Crawler & PunchOut Integration Engineer, you'll connect hundreds of suppliers to our platform by building robust web crawlers, PunchOut integrations, and direct webshop APIs. Your work enables our customers to seamlessly access supplier catalogues, pricing, and product data—and is a critical part of the connectivity layer that powers our platform.
What you'll do
Build and maintain supplier integrations using web crawlers, PunchOut (OCI & cXML), and direct webshop APIs
Reverse engineer supplier websites and APIs to create reliable integrations
Develop async Python services using modern networking and browser automation
Extract and normalize product, pricing, and availability data
Debug production issues and continuously improve integration reliability and performance
What we're looking for
4+ years of professional Python experience
Strong experience with web crawling, scraping, API development, or API reverse engineering
Solid knowledge of
asyncio,httpx, HTTP, browser automation, and REST APIsExperience with HTML, JSON, XML, MongoDB, and Pydantic
Excellent debugging skills and an ownership mindset
English required; German is a plus
Why Lio?
Build infrastructure powering enterprise procurement at scale. Solve engineering challenges across APIs, web integrations, and automation. Own production-critical systems used by leading global enterprises. Competitive compensation, meaningful equity, and exceptional teammates. 100% on-site in our Munich office, where we build together every day.