Wufangjie (Jeremy) Ma

Backend Software Engineer

location_on Suzhou, Jiangsu, China email mwfj0215@gmail.com GitHub LinkedIn
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Work Experience / 工作经历

Backend Software Engineer / 服务器后端开发工程师

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Zoom Workplace

calendar_today 2021.9 - Present
place Suzhou, Jiangsu
Focus: Distributed Backend R&D, Performance Tuning, Redis, AWS DynamoDB

1. Zoom TeamChat/Webinar Backend Performance Optimization

(a) 100k+ Webinar Attendee List Push Optimization — 10x Improvement

  • Background: Original architecture couldn't support pushing large attendee lists to presenters in a short time, causing service slowdown
  • Solution: Implemented cache queue + timer strategy to batch join requests and deliver attendee lists in bulk

(b) Historical Message Query Storage Architecture Upgrade — 10x Improvement

  • Background: Frequent DB throughput limit alerts in production
  • Solution: Introduced coroutine pools for parallel processing, message merging, and TTL-based expiration to avoid DB hotspots

(c) 50k+ TeamChat Group Performance Optimization

  • Solution: Dedicated coroutine pool + node-based message batching to improve message forwarding throughput

(d) Back-pressure Mechanism for Channel Edit Messages

  • Prevented main coroutine blocking caused by excessive channel settings messages

2. Zoom TeamChat Feature Development

  • Group owner can delete member messages
  • Multi-device login limit validation for TeamChat clients
  • 1-on-1 meeting invitation conflict detection
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Selected Projects / 个人项目

terminal

MIT 6.5840 Distributed Systems Course

calendar_month Feb 2025 - Jun 2025
Tech Stack: Distributed Systems, Raft Algorithm, Golang
https://github.com/mwfj/6.5840-Distributed-Systems

Implemented Raft consensus algorithm based on the paper:
1. Leader Election 2. Log Compaction (Snapshot) 3. Log Replication

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AI Application Tools Learning

calendar_month May 2025 - Present
  • Proficient with Claude Code, ChatGPT CodeX for AI-assisted development
  • Following latest LLM application technologies: RAG, MCP, etc.
  • Familiar with mainstream LLM frameworks: LangChain, ChromaDB
school

Education / 教育情况

M.S. in Computer Science

Clemson University

event Aug 2018 - May 2020
location_on Clemson, SC, USA

"Top 70 Research University, Top 25 Public University"

B.S. in Network Engineering

Southwest Minzu University

event Aug 2012 - Jul 2016
location_on Chengdu, Sichuan

National 3rd Prize - National College SDN Competition

psychology

Skills / 擅长领域

Distributed Systems Linux / OS Reactor Model Raft Algorithm C++ Golang Erlang English
language

Language Tests

  • TOEFL: 90
  • GRE: 308
  • CET-6: 450
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Awards / 个人荣誉

2022 Zoom Team Star
(Best Employee Award)

verified

Certifications

Claude Code Course Completion

Issued by DeepLearning.AI & Anthropic

View Certificate
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