JERRY CASTILLE / ENTERPRISE ARCHITECT
Identity × Agentic AI × Knowledge × Governance
Executive enterprise architect designing secure, governed systems across identity, cloud, AI platforms and enterprise knowledge.
Open to Principal, Chief and Enterprise Architecture opportunities and select strategic engagements.
01 / Professional thesis
Enterprise identity used to govern people. Agentic systems add autonomous actors, delegated authority, machine-to-machine action and persistent organizational knowledge.
The next generation of enterprise architecture must bring identity, authorization, knowledge, governance, observability and AI together as one system. Jerry has spent his career building the pieces now converging.
02 / Selected work
Governed agentic-AI platform
Production agentic systems need isolation, repeatability and an explicit governance model—not another shared chatbot surface.
One architecture, realized three ways: dedicated customer AWS accounts using Bedrock, Knowledge Bases and infrastructure as code; containerized QStack Core for data-center environments; and QStack Studio as a macOS application.
Organizational Cognitive Substrate
Enterprise knowledge is fragmented, ephemeral and frequently separated from the permissions that should govern its use.
A governed RAG / GraphRAG architecture that distills enterprise knowledge into permissioned, persistent stores exposed to agents through Model Context Protocol.
AI-output transparency ledger
AI outputs that influence consequential work must remain reconstructable and accountable after the moment of generation.
An immutable transparency ledger designed to preserve AI-output provenance and support auditability in regulated environments.
Enterprise identity architecture
Regulated enterprises need identity platforms that hold together across program strategy, cloud boundaries and production delivery.
Roadmaps, platform architecture and delivery oversight spanning IGA, PAM, SSO/MFA, access governance and zero-trust environments.
03 / The intersection
The value is not competence in each domain independently. It is the ability to make them operate as one governed system.
IGA · PAM · SSO / MFA · Zero Trust · Human and non-human identity · Access governance
AWS Bedrock · LLM orchestration · MCP · RAG · GraphRAG · Agent authorization
Persistent organizational memory · Governed retrieval · Semantic and graph structures
AWS · IaC · GitOps · Secure multi-tenant systems · VPC and cloud-native IAM
Enterprise roadmaps · Platform strategy · Standards · Mentoring · Client-facing leadership
QSTACK tenant deployment
Architects using the internal AI / knowledge assistant
Enterprise identity and architecture experience
Innovative Trailblazer of the Year
04 / Experience
Founder, QBase AI · VP, Global Architecture, Simeio Solutions
Agentic-AI platforms, governed knowledge architecture and global IAM / IGA / PAM capability leadership.
PathMaker Group (acquired by Simeio Solutions)
Principal architecture and delivery oversight for enterprise identity programs from strategy through production.
Mycroft · IBM Global Services · Independent Consultant · ePresence
Full-stack identity deployments, custom platform tooling and customer-facing identity systems across the US and Tokyo.
QBase is where Jerry applies his ideas around identity, intent, knowledge, governance and agentic systems in working architecture. The company is evidence of the practice: systems designed, built and exercised against real operational constraints.
Explore QBase AI05 / Technical landscape
06 / Architecture notes
Authorization models must account for delegated, persistent and non-human actors.
Knowledge becomes infrastructure when permissions, provenance and retrieval are designed together.
Autonomy without declared intent and accountable enforcement is unmanaged risk.
Consequential outputs should remain reconstructable long after generation.
The identity control plane is becoming part of the AI architecture.
A durable, permissioned foundation for institutional knowledge and agent access.
07 / Education
Massachusetts Institute of Technology
Graduate-level coursework in computer science and machine learning.08 / Contact
For Principal, Chief and Enterprise Architecture opportunities, select strategic engagements, technical collaboration or a focused exchange of ideas.
jerry@castille.us Keller, Texas