Lukas Osterloh
Senior Principal Software Engineer at Paylocity
Berlin, Germany
Summary
🤩
Rockstar🎓
Top SchoolLukas Osterloh is a Senior Principal Software Engineer based in Berlin with nine years of professional experience building backend systems and shipping production-grade software across startups and enterprise teams. He has driven reliability and security improvements in widely used open-source conversational AI (notably contributions to Rasa, including JWT validation and integration tests) and has progressed rapidly through senior technical roles at companies like Rasa, Airbase, and Paylocity. Lukas excels at hardening core infrastructure and test automation to make distributed systems more robust, while mentoring teams on architecture and delivery. His academic background in mathematics and a doctoral focus in atmospheric physics hint at a strong analytical approach to complex engineering problems and a comfort with quantitative rigor.
9 years of coding experience
18 years of employment as a software developer
Dr. rer. nat. Atmospheric Physics, Dr. rer. nat. Atmospheric Physics at University of Potsdam
German, English
Github Skills (13)
unit-testing10
nlu10
rasa10
pytest10
python10
test-automation10
natural-language-processing9
security9
nlp9
bot-framework9
machine-learning8
conversational-ai8
chatbot8
Programming languages (3)
Github contributions (5)
RasaHQ/rasa
Nov 2021 - Aug 2022
💬 Open source machine learning framework to automate text- and voice-based conversations: NLU, dialogue management, connect to Slack, Facebook, and more - Create chatbots and voice assistants
Role in this project:
Back-end Developer & QA Engineer/Test Automation Engineer
Back-end Developer & QA Engineer/Test Automation EngineerContributions:70 reviews, 19 commits, 13 PRs in 9 months
Contributions summary:Lukas primarily worked on improving the quality and robustness of the Rasa framework. Their contributions included implementing validations, particularly around unused objects, which involved modifying existing test files and core validator logic to provide more comprehensive checks. They also addressed a security issue by validating JWT tokens from the Bot Framework, demonstrating a focus on security best practices. Furthermore, the user added a new integration test to ensure the correct behavior of slot values within the framework.
nlupythonbotspeech-recognitionbotkit
losterloh/dotfiles
Aug 2016 - Jan 2025
Contributions:13 pushes, 2 branches in 8 years 5 months
Find and Hire Top DevelopersWe’ve analyzed the programming source code of over 60 million software developers on GitHub and scored them by 50,000 skills. Sign-up on Prog,AI to search for software developers.