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Rainer Hahnekamp
Google Developer Expert for Angular & AI Trainer
About
Rainer Hahnekamp is a Google Developer Expert (GDE) and AI Architect at Soverius AI, with over 15 years of experience in the design and delivery of mission-critical enterprise systems.
While the industry is currently in a race to adopt LLMs, Rainer’s expertise rests on a deep academic foundation in Unsupervised Machine Learning from the University of Vienna.
As a strategic "Bridge Builder," Rainer specializes in the deep implementation of AI services. He moves beyond simple APIs to focus on Fine-Tuning, complex RAG architectures, and Agentic development.
Blog Posts

What is an Agent Harness?
May 28, 2026Learn what an Agent Harness is, why it matters, and how it improves LLMs through tools, context management, agent runtimes, guardrails, and intent alignment.

AI Fundamentals: How LLMs Work and Their Limitations
Apr 23, 2026A deep dive into how AI models really work, from pre-training and inference to Chain of Thought, agents, and the emerging field of Harness Engineering.
Highlights
- Google Developer Expert (GDE)
- Conference speaker: Devoxx BE, AI-Poland, AI-India, ng-conf, Basta, JAX, WeAreDevelopers
- https://www.youtube.com/@rainerhahnekamp
- 15+ years at Mars, Inc. — team lead for production Angular & Spring systems
Quick Info
Google Developer Expert for Angular & AI Trainer
2 talks
2 posts
1 reviewed


