# Yiyun Peng

> Software Engineer at Amazon

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

• Senior Software Engineer at Bloomberg, Master's degree in Computer Science from University of Rochester.
• Proficient in Python, JavaScript/TypeScript, C++/C, SQL, Java, C#, Matlab, etc. 
• Skilled in React, Tornado, Django, Spring, Selenium, Entity Framework, WinForms, Keras, etc.
• Work experience: Software Development, Web Development, Data Mining and Machine Learning.
• Project experience: Android Development, Web Development, Nature Language Processing, Data Mining and Computer Vision.
• Machine Learning Algorithms and Models: CNN, RNN, LSTM, DQN, K-means, kNN, Apriori, DBSCAN, Pattern-Fusion.

## Work Experience
### Software Engineer @ Amazon
Jan 2025 – Present

### Senior Software Engineer @ Bloomberg LP
Jan 2021 – Jan 2025 | New York City Metropolitan Area
• Led full stack projects for system migration, improved processing efficiency, data accuracy and user accessibility, empowered system scalability, reduced maintenance engineering effort by 70%
• Designed and implemented microservices and APIs in C++/Python with internal frameworks, built front-end with TypeScript and React, enhanced application modularity and performance
• Participated in designing and developing scalable distributed systems, enabling users to manage securities with higher efficiency by automating manual data inputs
• Collaborated with stakeholders to gather requirements, implemented features that meet business needs and improve user experience
• Tested, deployed and maintained applications and services, provided tech support to solve real-time client issues and ensure better user experience
• Conducted design reviews and code reviews, mentored junior developers

### Software Engineer @ Fidelity Investments
Jan 2020 – Jan 2021 | Remote
• Developed service with Node.js and Typescript to support investment website
• Implemented Web front-end with Typescript and Angular

### Software Engineer @ J.P. Morgan
Jan 2019 – Jan 2020 | Greater New York City Area
• Developed trading support applications in Python, automated ETL process, improved analysis efficiency
• Built internal service and provided APIs for trading analysis, created rule-based system to parse unstructured data, stored data in object-oriented database, implemented web UI with TypeScript and React
• Migrated desktop trading monitor to web application, built interactive data visualization front-end for large real-time dataset with Perspective, set up service for real-time data feeding and portfolio hedging
• Contributed to platform Python 3 migration, upgraded third-party libraries in platform, optimized upgrade procedure and enhanced documentation, fostered a culture of best practices and continuous improvement
• Created and performed tests for applications, participated in software development life cycle control with Agile development pattern, provided tech support to stakeholders


## Education
### Master's degree in Computer Science (Artificial Intelligence & Data Mining)
University of Rochester

### Bachelor in Computer Science & Technology
Beijing Institute of Technology


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

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