Yun Li
- Role
- Full Stack Tech Lead Sde Iii, Push Service and Infrastructure at Groupon
- Location
- Redmond, WA, US
- LinkedIn followers
- 500 followers
About Yun Li
Program Languages: GoLang, Scala, Coffeescript, Clojure, Java, C#, C++, Perl…
Experience
Full Stack Tech Lead Sde Iii, Push Service and Infrastructure
Jan 2015 — Present
Program Languages: Scala, Coffeescript, Clojure, Java, GoLang - Big Data Pipeline: Spark, Storm, Kafka, MapReduce - NoSQL Database: Cassandra, Redis, MongoDB - Platform and Lib: Node.js, Martini, Express Participated/Led engineering works in: 1) Recommendation Service (aka. Behavior Targeting Service)- Built & Led the development of multiple BTS features using statistical learning models based on user-behavior data - Techs: Coffeescript, Scala, Node.js, Spark, Storm, Yarn, Cassandra, Redis 2) Cadence-Arbitration Service(CAS)- Led the development of CAS as a centralized real-time service to determine \"when\" to send \"what\" email/push-notification to \"whom\"- Techs: GoLang, Scala, Martini, Spark, MLlib, Yarn, Cassandra, Redis 3) Customer Data Infrastructure(CDI)- Led the development of CDI to meet data access requirements for both real-time services and large scale batch jobs from data scientist team - Techs: Scala, Java, Spark, Yarn, MapReduce, Cassandra 4) Cadence Model Implementation - Built Cadence Model & tools to automate Cadence Score generation - Techs: Java, Scala, Hive 5) Relevance engine & collaborative-filtering model based on user behaviors - Techs: Scala, Spark, Akka, Redis, Cassandra, Coffeescript, Node.js 6) Real-time Reporting for real-time services in Push-Platform - Techs: Spark, Storm, Kafka, Cassandra, Redis 7) Mentoring junior developers
Skills
- Vxworks
- Distributed Systems
- Python
- Tcl
- Tcp/Ip
- Device Drivers
- C++
- Parallel Computing
- Digital Signal Processors
- C
- Programming
- Algorithms
- Linux
- Multithreading
- Java
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