# Yifeng S.

> Software Developer | Scaleable Enterprise Software Systems

Location: Brooklyn, New York, United States
Profile: https://flows.cv/yifengs

## Work Experience
### Software Engineer @ Walmart
Jan 2024 – Present | Hoboken, New Jersey, United States
Built and scaled a real-time pricing anomaly detection platform processing 2,500+ TPS using Kotlin/Java microservices and Kafka. Achieved >99.9% decision accuracy and reduced false positives through domain-driven validation and ML scoring orchestration, while cutting P99 latency from 1200 ms to 310 ms by re-architecting synchronous flows into an asynchronous, event-driven pipeline to improve efficiency and reliability at peak scale. Worked in a full-time, fully dedicated contract capacity via Randstad.

### Volunteer @ New York Road Runners
Jan 2023 – Present

### Software Engineer @ Open Source Softwares
Jan 2021 – Present


## Education
### Master of Science - MS in Computer Engineering
New York University
Jan 2022 – Jan 2024

### Bachelor of Engineering - BE in Computer Software Engineering
Northeastern University (CN)
Jan 2018 – Jan 2022


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

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Source: https://flows.cv/yifengs
JSON Resume: https://flows.cv/yifengs/resume.json
Last updated: 2026-04-01