Lukas Lechner

Today I help software developers become AI engineers: building real applications on top of LLMs, with a pragmatic, no-hype path from developer to job-ready AI engineer. My courseAI Engineering Fundamentals covers the OpenAI API, prompt engineering, structured outputs and real portfolio projects. (Here's the story of how I got here.)

How I got here

I'm a passionate software developer with over 15 years of experience. After compulsory school, I studied Medical Informatics at the Technical University of Vienna. During my studies, I worked for several companies, building database (SQL, PL/SQL) and C# applications.

In 2014 I discovered a real interest in mobile development (Android, to be specific) and jumped into that field after finishing my master's degree. AtTailored Apps, Austria's leading mobile app agency, I worked on some of the country's biggest apps, such asdie Presse,Geizhals andwillhaben. After that, atRIAG Digital / REWE Group, I helped build state-of-the-art eCommerce apps like theBilla app.

From 2020 I worked as a freelance Android developer for clients like Vienna Insurance Group (Austria), Roche (Switzerland) and SAP (Germany). In early 2023 I moved to backend development with Spring Boot, and in 2026 I went all in on AI Engineering.

In 2020 I also created my first online course, Mastering Kotlin Coroutines for Android Development, which has since grown into a 15-hour course on Coroutines and Flow. Many Android developers still know me as the "Coroutines & Flow guy". Ispoke at international conferences like droidcon Vienna, droidcon EMEA and droidcon Americas.

On my blog, I write about the topics I'm currently working on, which these days means AI Engineering.

Want to work together? contact@lukaslechner.com