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AI engineering publication · field notes from Hermes

Engineering notes on production AI systems.

AI infrastructure releases, MCP, agents, retrieval, memory, and the operational lessons from building Hermes.

Featured analysis

The piece that anchors the week.

Latest signal

News, guides, and field notes.

The feed is built for senior engineers: what changed, why it matters, and how it affects production systems.

AllAI InfraMCPAgentsHermes
Weekly

What’s new this week in AI engineering

OpenAI, Anthropic, LangGraph, MCP, and infrastructure updates worth reading.

Guide

MCP Architecture: Protocol, Primitives, and Security

A production guide to lifecycle, transports, primitive design, and implementation boundaries.

Case study

How Hermes uses Forge to turn research into WordPress drafts

A practical look at planning, writing, reviewing, and publishing through an agent workflow.

Hermes field notes

Real implementation notes, not generic agent advice.

Runtime

Tool execution boundaries

Where agents should stop, ask, or checkpoint before side effects.

Memory

Durable context vs session state

What belongs in memory, what belongs in the transcript, and what should expire.

Publishing

Forge as content pipeline

Research, drafting, review, preview, and WordPress publication as one controlled workflow.

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Articles

AI engineering notes for production systems.

Release signal, deep technical guides, and Hermes case studies — organized for engineers making architecture decisions.

Guide

MCP Architecture: Protocol, Primitives, and Security

JSON-RPC lifecycle, transports, security boundaries, and implementation patterns.

Weekly

What changed this week in AI engineering

A weekly digest across OpenAI, Anthropic, LangGraph, MCP, and open-source infra.

Case Study

How Hermes uses human approval to control publishing side effects

Approval boundaries, preview URLs, draft-only automation, and safe publication paths.

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About Sieon Lee

I build production AI and data systems.

My work sits at the intersection of AI agents, retrieval infrastructure, and production data platforms. Sieon Labs is where I turn that work into source-backed engineering notes for people building real AI systems.

The through-line is operational reliability: data pipelines, vector search, intent routing, observability, and workflows that keep working after the demo.

Agents

Intent routing, tool execution, autonomous workflows.

Retrieval

Vector search, indexing strategy, hybrid data access.

Data infra

ETL, cloud databases, Terraform, monitoring.

Writing

AI infrastructure news, deep guides, Hermes cases.

Super Amplify

AI & Agent Development Intern

Contributing to enterprise AI agent platform features across integrations, execution workflows, productivity surfaces, and intent routing.

  • Built routing logic for Collection Chat, Ask Data, and AI agent workflows.
  • Supported Pinecone migration architecture and document indexing strategy.
  • Contributed to analytics and reporting workflows for operational insight.
Nexon Korea

Data Engineer

Built production data infrastructure for analytics, recommendations, and large-scale game operations.

  • Designed a 500GB+ AWS OpenSearch k-NN vector embedding store.
  • Built Python ETL and SQL Server auditing workflows for production analytics.
  • Provisioned Aurora MySQL, Azure SQL, and Redis with Terraform.
  • Built Grafana dashboards and anomaly-detection pipelines for operational reliability.
LG CNS Europe

IT MES Systems Engineer

Worked on manufacturing systems where query performance and reporting reliability directly affected operations.

  • Refactored SQL procedures behind real-time manufacturing dashboards.
  • Built C# automation tools for reporting integrations.
Education

University of Chicago · Stony Brook University

M.S. Applied Data Science at the University of Chicago; B.S. Information Systems from Stony Brook. Current capstone work focuses on healthcare AI retrieval systems using clinical datasets.

Systems toolkit

Capabilities instead of a resume keyword dump.

  • Python, SQL, R, C#
  • Pandas, NumPy, PySpark
  • Scikit-learn, TensorFlow, PyTorch
  • ETL/ELT pipeline design
  • Batch and streaming workflows
  • Data modeling and quality monitoring
  • AWS, Azure, GCP
  • OpenSearch, Aurora, Redis, BigQuery
  • Terraform, Docker, Kubernetes, Grafana
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