Pingyuan Ji
Beijing, China
Summary
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SeniorJi Yuan is a Senior Software Development Engineer with nine years of experience building scalable backend systems and data-driven features at Amazon, combining production services, web apps, and ML pipelines. He holds an M.S. in Computer Science from Beihang University and has engineered high-throughput Spark and PySpark workflows, automated DL model training on EC2/GPU, and serverless data pipelines using AWS Lambda and DataPipeline. Notable impacts include a catalog-matching neural model that improved cross-language mapping accuracy by 10% and a bestsellers widget that contributed to a large projected revenue uplift. Fluent across Java, Scala, Python and JavaScript, he bridges backend architecture and frontend delivery, having shipped internal tooling and customer-facing widgets with Spring MVC and modern JS stacks. Beyond production work, his academic publications on sequential pattern mining and crowdsourcing reflect a strong research grounding that informs his practical systems design.
9 years of coding experience
Github Skills (11)
raspberry6
robot6
python4
raspberry-pi3
controlling3
nvidia-jetson2
camera2
android2
jetson2
visualization1
nvidia1
Programming languages (2)
Github contributions (5)
PlainJi/iRobot
Nov 2016 - Dec 2018
Contributions:38 commits, 1 PR, 22 pushes in 2 years 1 month
raspberry-pipythonraspberryrobot
PlainJi/linux-init-script
Nov 2017 - Oct 2022
Contributions:74 commits, 65 pushes, 1 branch in 4 years 11 months
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