// not looking, but listening

Elizabeth Hau

Software engineer. Cloud architect. AI engineer.

The full stack, from infrastructure to intelligence.

Building AI systems end-to-end

I design the systems I build. At J&J Vision I'm both the architect and the engineer — standing up cloud infrastructure, then building the data pipelines and AI tools on top of it. Former SWE at Wayfair. MIT LGO (CS + MBA).

What I work with

Languages
PythonSQLJavaScriptJava
Cloud & Data
AzureDatabricksSparkDelta LakeAzure AI Foundry
AI / ML
Scikit-learnKerasNLPLLMsRAGPrompt Engineering
Data & AI Frameworks
PandasPySparkLangChainStreamlit
Architecture
Medallion ArchitectureData LakehouseETL/ELTData ModelingCloud-native Architecture

Where I've worked

J&J Vision
2022 — Present

AI Architect & Engineer

Designed and stood up cloud architecture for the data & AI team. Building GenAI and data systems across global supply chain operations, from Databricks Lakehouse to production AI interfaces.

Wayfair
2016 — 2020

Software Engineer — Transportation Last Mile

Built and shipped production systems across 50+ delivery centers. Delivery route planning, warehouse tooling, and incident response at scale.

MIT — Leaders for Global Operations (LGO)
2020 — 2022

M.Eng + MBA · CS & Management

Selected work

J&J Vision · Data Engineering

Cycle Time Data Model

Integrated 10+ source systems tracking 7B+ lenses/year. Surfaced priority areas across the contact lens production process.

↓ 89.6% reduction in 95th-percentile cycle time in 1 month
Wayfair · Systems Engineering

Route Processing Rearchitecture

Rearchitected delivery route planning with a safe fallback migration strategy.

30 min → <1 min · saved 30+ min/warehouse/day
J&J Vision · Cloud Architecture

Databricks Lakehouse

Designed and stood up Medallion architecture enabling scalable analytics across all supply chain functions.

Foundation for all data & AI workloads across the team
J&J Vision · GenAI

GenAI Supply Chain Interface

Natural language interface via Databricks AI/BI Genie for querying global backorder status and identifying mitigation actions.

Reduced manual analysis · accelerated response time
Wayfair · Full Stack

Warehouse Door Utilization Tool

Built cross-functionally and integrated with Wayfair's receiving scanning app and driver app. Piloted and launched to all 50+ delivery centers.

Let's connect

// not looking, but listening

Interested in working together or just want to say hello? I'd love to hear from you.

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