# Hai (Wisdom) Jiang

> Senior Software/Data Engineer

Location: Palo Alto, California, United States
Profile: https://flows.cv/haiwisdomjiang

## Work Experience
### Software Engineer @ DoorDash
Jan 2025 – Present | San Francisco Bay Area

### Software Engineer @ X
Jan 2022 – Jan 2025 | Palo Alto, California, United States

### Senior Software Engineer @ Twitter
Jan 2022 – Jan 2022 | Toronto, Ontario, Canada

### Senior Data Engineer @ Drop
Jan 2021 – Jan 2022 | Toronto, Ontario, Canada

### Senior Data engineer @ Acerta
Jan 2020 – Jan 2021

### Data Engineer @ Acerta
Jan 2019 – Jan 2020 | Kitchener, Canada Area

### Big Data Engineer @ The Globe and Mail
Jan 2018 – Jan 2019 | Toronto, Canada Area
Design, deploy and optimize large scale digital media system (Sophi) to transform real-time events from audiences in various platforms to meaningful insights/decisions for the media business.
• Sophi data pipeline (Docker + Kubernetes + aws + Data modeling + API):
▪ Process incoming events (1+ billion per day) with multi-platform visitor behaviors (spark streaming)
▪ Implement multi-level storage & analysis with s3, psql and elastic search.
▪ Design analytical Data Modeling (user, article, score) runbooks in postgresql and Mongodb.
▪ Design restful Api using Java spring boot mvc that provides data to front-end benchmark.
▪ Design optimized throughput & latency API with Akka: distributed workers, cache and multi-threads.
▪ Write high quality code (aws resource manager, device-detector) to serve for hybrid data environment.
▪ Docker data pipelines models/services and deploy micro-services on Kubernetes clusters.
▪ Practice life-cycled testing strategy: unit test, integration test, and load test (Apatch jmeter).
▪ Work with UI developer to debug and improve web application written by React Redux.

### Software Developer (Data Developer) @ XE.com Inc.
Jan 2017 – Jan 2018 | Newmarket, ON, Canada
Work in XEMT, XE Sites, XE apps, XECD, XERA projects, and responsible for collecting user data, building data ETL, pipeline and visualization system, and processing, investigating and analyzing data.

•	Raw Events Processing: 
	Configure AWS kinesis firehose to save raw events json data to raw event s3 bucket.
	Design event listener (Java & Python) Lambda function that processes and saves event data to Rds mysql database or redshift distributed database in response to SNS events occurred to s3 bucket. 
	Use Jenkins to automate data pipeline, publish data to Tableau and reprocess lambda for backfilling.
•	Data Management, Search and Analysis:
	Design database schema (Mysql & PSQL) in Rds or Redshift database.
	Design Data-pipeline to pipe data between dbs and s3 within and across aws accounts.
	Write Apatch spark (python) and Hive scripts in aws Emr to search and analyze raw data in s3 buckets.
	Operate aws Athena to read, search and analyze data directly from s3 bucket.
•	Data Mining: 
	Involved in machine learning projects: working with data scientist for data pre-processing and preliminary research, and exploring new tools for the data mining projects.
	Explored aws sagemaker, successfully deploy sagemaker notebook instance with EMR to lauch cluster pyspark operation to preprocess tetabytes datasets

### US Senior Patent Engineer @ O2Micro
Jan 2008 – Jan 2012
1. Worked for innovation ideas: researched the innovation technology, expanded the innovation ideas to all possible business usages, achieved the maximum business values by protecting and marketing the innovation ideas with patent law.
2. Fast and efficient learning.
3. Managed a team of 4 persons that achieves the best performance of global patent department in 2012


## Education
### Master’s Degree in Electrical and Computer Engineering (Software Engineering)
University of Waterloo

### Master’s Degree in Integrated Circuit Design at Electronic Thin Film and Integrated Component National Key Laboratory
University of Electronic Science and Technology of China

### Bachelor’s Degree in Electronic and Information Engineering
University of Electronic Science and Technology of China


## Contact & Social
- LinkedIn: https://linkedin.com/in/hai-wisdom-jiang-9a602b100

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