Hao Ren Email & Phone Number

Paris Area, France

Paris Area, France

• Worked on Non-Second price bidder (NPSB) which is a real-time bidding model to maximize the expected profit margin (log-LR, binary search)• Rebuilt all the infrastructure of the bidding team by using Hadoop, Spark, Mesos, and Cuttle scheduler

Paris Area, France

* Large scale data pipeline- Periodicaly extract data from site server to S3 as the source of batch processing. - Take S3 data for spark jobs, and sink to redshift for effecient analytics and elasticsearch for indexing and searching.- Keywords: spark, redshift, elasticsearch, aws s3* Classified ads streaming service- Import classifed ads in a streaming way via kafka-rest- Create Spark streaming job transforms ads in kafka into a format suitable for the site- Keywords: spark streaming, kafka* Machine Learning: crawler detection- Detecte crawler which pirates site contenu and occupies too much server resources- Model training based on server log batch for a period of time- Online prediction and alert based on server logs stream- Start with logistic regression with the help of blacklist and whitelist- Unsupervised learning, like KMeans gives better results on our dataset- Keywords: spark MLlib, kafka* Initiate Deep Learning: ad2vec- An experimental deeplearning project of data-science lab at leboncoin- Convert each classified ad into a vector (inspired by word2vec) for further usage. (clustering, recommendation, etc)- Keywords: word2vec, NLP* DevOps- Help to make the projects mentioned above running in production in AWS- Scheduling with Airflow- Provisioning with Chef and Packer- Monitoring with DataDog- Reinforce code style convention

19-21 Rue Poissonnière, 75002, Paris

- Develop a platform built on the top of Spark framework.- Design, implement & evaluate Machine Learning algorithm with Spark- AWS: EC2, S3, CloudFront, IAM, ElasticBeanStalk- Analytics: SnowPlow, Google Tag Manager- Hadoop eco-system (HDFS, MapReduce, HBase, Hive)- Programming in Scala

Pont-Sainte-Maxence, France

- GUI for a wielding generator- QT framework- Multi-thread programming- Programming in C++

Exchange Student, Computer Science

Mainly interested in functional programming in Scala and type theory by taking the courses of Martin Odersky (creator of Scala) Grade.

Master Of Engineering (M.Eng.), Computer Science & Datamining, Gpa 3.9 / 4

Grade A on all the programming, mathematics and data mining courses. Selected as an exchange student to EPFL (École polytechnique fédérale.

Bachelor'S Degree, Information Technology, Gpa 4.5 / 5

Top 1% student in the Institution. Title of Honor: Excellent Graduated Student of Shanghai