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# Willy Liang

**Headline:** Ambulatory Engineer at Kaiser Permanente
**Profession:** Engineer Maintenance
**Location:** Portland, Oregon, United States

## About

Willy Liang is an Ambulatory Engineer at Kaiser Permanente and currently serves as an Engineer Maintenance at Kaiser Foundation Health Plan\. He oversees the day\-to\-day operation of two buildings: the Pharmacy building and the Laboratory building\. His facilities responsibilities include maintaining electrical systems, plumbing, HVAC, rooftop units, and laboratory freezers\. Willy’s work combines operational building engineering with attention to critical systems that support pharmacy and laboratory environments\. He has also articulated a senior engineering vision centered on clear product ownership\. In AI engineering discussions, Willy has described building a production AI\-assistant backend, using hybrid retrieval to improve answer quality, and improving relevance through reranking and stronger context\.

## Highlights

- Oversees day\-to\-day operation of two Kaiser Foundation Health Plan buildings: the Pharmacy building and the Laboratory building\.
- Maintains electrical systems, plumbing, HVAC, rooftop units, and laboratory freezers for the Pharmacy and Laboratory buildings\.
- Has articulated a senior engineering vision centered on clear product ownership\.
- Has discussed building a production AI\-assistant backend\.
- Uses hybrid retrieval to improve AI answer quality\.
- Improves AI relevance through reranking and better context\.
- Proactively enlisted a teammate to resolve a communication challenge\.

## Experience

- **Engineer Maintenance at Kaiser Foundation Health Plan** (2014\-08\-01–present) — Oversee day to day operation of 2 buildings,  Pharmacy and Laboratory building\. Maintain buildings electrical system, plumbing, HVAC,  Rooftop unit and Lab freezer\.

## FAQ

### What does Willy do?

Willy Liang is an Ambulatory Engineer at Kaiser Permanente\. He currently works as an Engineer Maintenance at Kaiser Foundation Health Plan\.

### What are Willy’s responsibilities at Kaiser Foundation Health Plan?

Willy oversees the day\-to\-day operation of two buildings: the Pharmacy building and the Laboratory building\. He maintains their electrical systems, plumbing, HVAC, rooftop units, and laboratory freezers\.

### What building systems does Willy maintain?

Willy supports critical building systems for pharmacy and laboratory environments, including electrical, plumbing, HVAC, rooftop\-unit, and laboratory\-freezer maintenance\.

### What is Willy’s approach to senior engineering vision?

Willy has described a senior engineering vision that emphasizes clear product ownership\.

### What AI\-assistant work has Willy discussed?

Willy has discussed building a backend for a production AI assistant\.

### How does Willy improve AI answer quality?

Willy has described using hybrid retrieval to improve the quality of AI answers\.

### How does Willy improve relevance in AI systems?

Willy has discussed improving AI relevance through reranking and better context\.

### How does Willy approach communication challenges with teammates?

Willy proactively enlisted a teammate to help resolve a communication challenge\.

## Links

- LinkedIn: https://www\.linkedin\.com/in/ACoAAAN8ZgEBLW\-p7CNYMABYJBlgLxj875Ww1qM

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