John Belthoff
Known as: JB
Biographical Info
John Belthoff is a Lead Software Engineer and Systems Architect with 15+ years designing, building, and operating production platforms across enterprise finance, AI-native development, and cloud infrastructure. He delivers complete systems — not features — spanning architecture, implementation, security, and deployment.
John is the author of Code Matters, where he writes about the engineering decisions, infrastructure patterns, and AI-native workflows behind the systems he actually ships. Recent posts cover replacing HighRadius with a disciplined AI-native development process, semantic knowledge systems in production, and full-stack security implementation across the entire request lifecycle.
His current work centers on Continuum — an AI-native engineering methodology built on Engram, a pgvector-backed semantic memory server that gives AI agents persistent, searchable context across codebases. The platform has been used to design, build, document, and validate production systems at a pace that would be implausible with conventional approaches.
John's background spans enterprise .NET and Angular development, cloud infrastructure (AWS, Azure, HashiCorp Vault, Keycloak), and broadcast audio engineering — including an Emmy Award for technical work in New York television. He brings the same discipline to software that he brought to broadcast: get it right, get it on air, and make sure it stays there.
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Recent Posts
- Securing an MCP Server with OAuth 2.1 and Keycloak: How Engram Moved from Bearer Tokens to a Real Resource Server
- Introducing Continuum: The Memory Behind the Six Weeks Is Now a Product
- Six Weeks to Replace HighRadius: What Disciplined AI-Native Development Actually Looks Like
- CSP Nonce Injection Through the Entire Stack: Express SSR → NGINX → Browser
- BenchmarkDotNet in Practice: Measuring What Actually Matters