Lili (Ellen) Ren
Vancouver,Canada
Summary
Results-oriented and innovative Senior Software Engineer with [Number] years of experience. Easily communicates complex technical requirements to non-technical stakeholders. Excellent leadership record of leading development teams in enterprise-wide development projects.
Overview
13
13
years of professional experience
Work History
Senior Software Engineer
Amazon
12.2023 - Current
- Results, impact and your contribution
- Add at numbers to the impact, use active languages and mention specifics like the languages used
- The more recent the position, the more details you usually want to share
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- Ut enim ad minim veniam 100, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo.
Senior Software Engineer
Amazon
11.2022 - 12.2023
- Maintain and rearchitect Partition Metadata Service for S3 index team
Software Engineer II
Amazon
01.2019 - 11.2022
- Maintain and rearchitect Partition Metadata Service for S3 index team
Software Engineer II
Amazon
01.2018 - 01.2019
- Designed and architected FastTrack information for Multi-Offer-Buybox project
Senior Software Engineer
Freewheel
03.2017 - 11.2017
- Audience Data Right Platform: Designed and Built Audience Data Right Platform which is based on a Kubernets managed microservice architecture, provide a decentralized data cooperation and sharing ecosystem that ensure zero knowledge leakage and use Hyperledger as distributed ledger for auditing.
Software Engineer
Freewheel
06.2016 - 03.2017
- Server to Server Audience Data Injection Service: Maintained and reconstructed Server to Server Audience Data Injection Service, which provide server integrated audience data importing
- Enhanced the service QPS by 3 times.
Software Engineer
Tencent
12.2014 - 06.2016
- News Recommendation Project: Designed and architected news meta data stream system which calculate various of news feature including topic/tag/classification, generated forward and inverted index
- Using Protocal Buffer instead of text to enhance the scalability and robustness of the system
- Using Redis as cache, avoid full amount data update, optimized data processing performance
- Using Native Bayes Algorithm to calculate fresh score feature, which indicate the recency degree of the news
- Knowledge Graph Project: Built scalable index based on Hadoop, decrease 80% update using diff index
- Built in memory hot key index by preprocessing data.
Software Engineer
Kuwo Music
03.2013 - 07.2014
- Developed configurable SDK to collect real-time service quality statistics of back-end services
- Developer can collect statistics including QPS, Mean Response Time, load and memory information in their web service by using the SDK, which optimized the trouble-shooting procedure for developer
- Optimized video compress quality by using the API of open source video processing lib handbrake, cut time cost more than 20%, achieved higher image quality with the same file size
- Researched Recommendation System, have knowledge of Collaborative filter and Machine Learning algorithms.
Research Intern
Microsoft Research Asia
06.2011 - 08.2012
- As an intern in Sora(Software Radio) project, the project aims at cut time cost and hardware cost for wireless protocol research, develop and test their protocol implementation using software instead of hardware
- Implemented Software-WIFI demo based on Sora API, the demo can work as WIFI router
- Developed application to auto test Software-WIFI and analysis test result.
Education
Master of Science in Electrical Engineering -
Beijing University of Post and Telecommunication
06.2013
Bachelor of Science in Electrical Engineering -
Jiangnan University
06.2010
Skills
- Java/C
- Algorithm
- Data Structure
- Microservice Architecture/Container/AWS/Kubernetes/Http Service
- Development Lifecycles
- Proficient in [Language]
- System improvements
- Project Planning
- Analytics
- Performance Improvements
- Software Development Lifecycle
- Web application development
- Amazon Web Services
- Project Leadership
- Microservices Architecture
Timeline
Senior Software Engineer
Amazon
12.2023 - Current
Senior Software Engineer
Amazon
11.2022 - 12.2023
Software Engineer II
Amazon
01.2019 - 11.2022
Software Engineer II
Amazon
01.2018 - 01.2019
Senior Software Engineer
Freewheel
03.2017 - 11.2017
Software Engineer
Freewheel
06.2016 - 03.2017
Software Engineer
Tencent
12.2014 - 06.2016
Software Engineer
Kuwo Music
03.2013 - 07.2014
Research Intern
Microsoft Research Asia
06.2011 - 08.2012
Master of Science in Electrical Engineering -
Beijing University of Post and Telecommunication
Bachelor of Science in Electrical Engineering -
Jiangnan University
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