# Junming Chen

> Engineering@FireworksAI  |  Xoogler

Location: San Francisco Bay Area, United States
Profile: https://flows.cv/junming

## Work Experience
### Software Engineer @ Fireworks AI
Jan 2025 – Present
Inference optimization

SFT & RL service

### Senior Software Engineer @ Google
Jan 2016 – Jan 2025 | San Francisco Bay Area
TL of Knowledge Graph powered GenAI Trust Safety.
- Built Trust Risk Engine with low latency configurable C++ libraries which works for both online features and batch jobs.
- Provide precomputed trust signals and trust policies for multi-surface GenAI products (Search AI Overview, Gemini, Cloud VertexAI, etc)
- Improved qualities to achieve 99%+ recall with decent precision for 2024 Election protections.
- Built LLM based Search Quality and KG classifiers.

PAST
- Knowledge Graph Quality and Trust: improve data indexing trust evaluation and human review platform.
- Knowledge Graph coverage and quality improvement with user feedback
- Knowledge Graph I18n via smart language fallback and machine translations.

### Software Engineer Intern @ WePay
Jan 2016 – Jan 2016 | San Francisco Bay Area
Software engineer intern in Wepay's Risk engineer team. Worked on Fraud Model Training pipeline migration. 
- Refactored ETL and model training pipeline from local Python script to Airflow;
- Enabled data IO on BigQuery and optimized process with parallelism.

The migration reduced daily model training process time by 70%, from 9-13 hours to 3-4 hours. It eliminates the performance bottlenecks and single point of failure in the old approach.

### Software Engineer Intern @ SAP
Jan 2015 – Jan 2015 | Shanghai, China
Shipping containers optimization based on LP, network flow and different heuristic search strategies.

My work: Data insight. Computed historic stock and cost based on different logic using Python, HANA SQLscripts and L language. These are KPIs in new version of the product and parameters for resource planning optimization.


## Education
### Master in Computer Science
University of Southern California

### Bachelor in Computer Science
Fudan University

### Foreign Language School Attached to Guangxi Normal University


## Contact & Social
- LinkedIn: https://linkedin.com/in/junmingch

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Source: https://flows.cv/junming
JSON Resume: https://flows.cv/junming/resume.json
Last updated: 2026-04-05