AI & Data Engineer — Production LLM systems, multi-agent orchestration, and governed data platforms.
Hands-on AI and data systems
Andrew Miller · Granville, Ohio
I build production agents, RAG over lakehouse data, and governed platforms on Databricks, Snowflake, Azure, and GCP Kubernetes. I translate complex AI and data systems into clear outcomes for operators and leadership.
Selected Technical Work
Concrete patterns from recent production work on multi-agent systems and governed data platforms.
Multi-agent orchestration
LangChain and LangGraph agents with tool calling, routing, and human-in-the-loop control for production workflows.
> Designed and shipped agent systems that run against real operational data, not demos.
RAG over lakehouse data
Retrieval pipelines grounded in governed lakehouse tables so answers stay tied to source systems of record.
> Built retrieval and grounding patterns on top of curated enterprise data, not loose document dumps.
Custom LLM toolkits
Domain toolkits that let models query systems, take bounded actions, and return auditable results.
ETL into Databricks and Snowflake
Reliable pipelines that land operational data into lakehouse platforms with clear ownership and contracts.
Production evaluation
Evaluation harnesses for quality, cost, and failure modes before and after agents go live.
Governed data lakes
Lakehouse integrations with access control, lineage, and compliance built into the platform on Azure and GCP Kubernetes.
> 2024–2025. Built a governed data lake from the ground up. Presented the architecture at Google Cloud Next 2025.
Systems Delivered
Governed data platform
Stood up a data lake with governance from day one so teams could trust and use shared operational data.
> 2024–2025. Architecture presented at Google Cloud Next 2025.
Production AI agents
Deployed AI agents on Google Cloud for a global financial services firm, with measurement tied to business outcomes.
> 2025. Hands-on delivery of agent systems in a regulated environment.
Zero-downtime platform replacement
Replaced a legacy platform processing millions in daily sales with a modern cloud system.
> 2020–2021. Zero downtime. Cut costs by 95% and maintenance by 50%.
Custom ops software
Moved a central Ohio manufacturer off NetSuite onto software shaped around how the operation actually runs.
Security and governance
Owned GDPR, PII, and governance compliance while responding to active cyber threats.
> 2020–2024.
Where this transfers
Focused on practical AI that works on operational data across siloed systems; experienced integrating with enterprise platforms and supporting non-technical users.
How I Work
I stay hands-on-keyboard. I design the system, write the code, and ship what I recommend.
- Start with a working prototype on real data, then scale what proves out
- Prefer governed platforms and measurable evaluation over slideware demos
- Translate complex AI and data systems into clear outcomes for operators and leadership
- Make build-vs-buy calls from what things actually cost to run and maintain
Available for deep technical delivery: production agents, RAG, lakehouse integration, and the platform work that keeps them reliable.
Get in Touch
> Email: contact@dev.am
> Phone: +1 (440) 935-5433
> Location: Granville, OH