June 2011 to August 2012
Senior Software Engineer
November 2013 to July 2016
January 2015 to June 2016
July 2012 to September 2013
University of Pennsylvania School of Medicine
February 2009 to May 2012
Biomedical Research Building
May 2010 to August 2010
Johns Hopkins University
June 2009 to August 2009
Senior Software Engineer
What company does Duyun Chen work for?
Duyun Chen works for Nurorestore
What is Duyun Chen's role at Nurorestore?
Duyun Chen is Fellow
What industry does Duyun Chen work in?
Duyun Chen works in the Computer Software industry.
Fellow @ Nurorestore CAD Modeling, signal processing, product design, patenting From June 2011 to August 2012 (1 year 3 months) Mansfield, MASenior Software Engineer @ Linc-Global - Designed and implemented the first product recommendation system for the company used in production.- Developed backend RESTful JSON API for Android, iOS, and web consumption using Django, served with Gunicorn and NginX and backed with MySQL database.- Maintained a search cluster using ElasticSearch and exposed search APIs through Django.- Designed and implemented scalable logging analytics using Flume, Hadoop, and Hive.- Configured and operated custom Hadoop cluster using Amazon EC2 instances and developed deployment processes for MapReduce jobs and data migration paths to/from MySQL using SQOOP. - Operated load-balanced servers, CDNs and domains using AWS EC2, S3, CloudFront, and Route53. Managed asynchronous processing through SQS, Celery, and Redis.- Spearheaded efforts to include unit testing and proper deployment and continuous integration processes to enable a more efficient and robust agile development environment. From November 2013 to July 2016 (2 years 9 months) Sunnyvale, CATeaching Assistant @ Stanford University - [CS107, intro systems course] Debugged and code reviewed C programming assignments ranging from spellcheckers to memory allocators. Helped students grasp Unix skills and C debugging proficiency using tools such as gdb and valgrind.- [CS246, mining massive data sets] Helped students understand and implement MapReduce jobs using Hadoop. Reinforced concepts ranging from recommendation systems to stream processing. Held office hours and designed exams.- [CS227b, general game playing] Helped students design intelligent game-playing AIs capable of playing any discrete-time deterministic game describable in propositional logic. Implemented online matchmaking server to allow student teams to compete among each other in real time. Gave lectures, held office hours, and organized in-person competitions. From January 2015 to June 2016 (1 year 6 months) Stanford, CASoftware Engineer @ UC Berkeley - Designed and implemented Spring/Hibernate web application and backend to manage student admissions process and data- Upgraded from legacy PHP infrastructure while maintaining backwards compatibility From July 2012 to September 2013 (1 year 3 months) Berkeley, CAResearch Assistant @ University of Pennsylvania School of Medicine From February 2009 to May 2012 (3 years 4 months) Biomedical Research BuildingREU Researcher @ Virginia Tech Signal processing, Cognitive Radio, Wireless Body Area Networks From May 2010 to August 2010 (4 months) Blacksburg, VAResearcher @ Johns Hopkins University REU researcher on cortical segmentation, image processing, and signal processing From June 2009 to August 2009 (3 months) Senior Software Engineer @ Google Aug 2020 - Present: Spanner Database InfrastructureJan 2018 - Aug 2020: Google Cloud Computer Vision AI and Document AIAug 2016 - Jan 2018: Google Cloud Search Sunnyvale, CA
Introversion (I), Sensing (S), Thinking (T), Perceiving (P)
1 year(s), 6 month(s)
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