Spencer Schneidenbach

AI Engineer & Software Developer

I build production AI systems and share what actually works. I'm a software engineer with over 15 years experience, specializing in web, .NET, and Node. President & CTO of Aviron Labs, an AI and software development consultancy.

Available for consulting Get in touch →

What I Do

Agentic AI LLMs Prompt Engineering RAG & Embeddings Semantic Kernel LangChain C#/.NET React

Recent Writing

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Testing Common Prompt Injection Defenses: XML vs. Markdown and System vs. User Prompts

Oct 25, 2025

How Two Words Broke My LLM-Powered Chat Agent

Aug 21, 2025

Iterators in C#, IEnumerable<T>, and IAsyncEnumerable<T>

Jan 16, 2020

A Brief Comparison Between Newtonsoft.Json and System.Text.Json

Jan 14, 2020

Recent Speaking

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The Business Value of Agentic AI – A Real World Case Study

KCDC • Aug 13–15, 2025

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Using C# Expression Trees in the Real World

KCDC • Aug 13–15, 2025

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The State of Modern APIs – Comparing GraphQL, REST, gRPC, and Async Messaging

dev up • Aug 6–8, 2025

Let's Connect

I do AI consulting and software development. I'm an international speaker and teacher. Feel free to reach out anytime with questions, for a consulting engagement, or just to say hi!

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