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Data Scientist

Walmart


Location:
SUNNYVALE, CA
Date:
06/27/2017
2017-06-272017-07-26
Job Code:
895867
Walmart
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Job Details

JobId: 895867
JobTitle: Data Scientist
City: SUNNYVALE
State: CA
Description:

Division Summary

@WalmartLabs is the technical powerhouse behind Walmart Global eCommerce. We employ big data at scale -- from machine learning, data mining and optimization algorithms, to modeling and analyzing massive flows of data from online, social, mobile and offline commerce. We don’t just engineer cool websites, mobile apps, and new services; we use our own open source tools to create the framework. Deployment is automated and accelerated through our open cloud platform. This makes us incredibly nimble and able to adjust in real-time to our global customers.


Department Summary

The Search team processes billions of queries for millions of products on Walmart sites and mobile apps worldwide. We mine structured and semi-structured data from product catalogs, social web, transactions, query logs, etc. at an unprecedented scale. We work on big data problems, cutting edge relevance algorithms from information retrieval, machine learning, and ranking to deliver a high-availability, low-latency service, which directly impacts business metrics.


Position Summary

The candidate will work on building the next generation of eCommerce technologies at the WalmartLabs search ranking team. She/He will have the opportunity to build state of the art search and browse ranking algorithms that power Walmart's eCommerce websites and mobile applications, serving millions of requests per day and generating billions of dollars of revenue per year.


Position Description




  • A Data Scientist is responsible for analyzing large data sets to develop custom models and algorithms to drive business solutions. Data Scientists work on project teams in order to provide analytical support to projects (for example, email targeting, business optimization, consumer recommendations) for Walmart eCommerce. Data Scientists are responsible for building large data sets from multiple sources in order to build algorithms for predicting future data characteristics. Those algorithms will be tested, validated, and applied to large data sets. Data Scientists are responsible for training the algorithms so they can be applied to future data sets and provide the appropriate search results. Data Scientists are responsible for researching new trends in the industry and utilizing up-to-date technology (for example, HBase, MapReduce, LAPack, Gurobi) and analytical skills to support their assigned project.

  • Build complex data sets from multiple data sources, both internally and externally.

  • Build learning systems to analyze and filter continuous data flows and offline data analysis.

  • Combine data features to determine search models.

  • Conduct advanced statistical analysis to determine trends and significant data relationships.

  • Demonstrates up-to-date expertise and applies this to the development, execution, and improvement of action plans

  • Develop custom data models to drive innovative business solutions.

  • Develop models of current state in order to determine needed improvements.

  • Models compliance with company policies and procedures and supports company mission, values, and standards of ethics and integrity

  • Provides and supports the implementation of business solutions

  • Research new techniques and best practices within the industry.

  • Scale new algorithms to large data sets.

  • Train algorithms to apply models to new data sets.

  • Utilize system tools including (MySQL, Hadoop, Weka, R, Matlab,ILog).

  • Validate models and algorithmic techniques.

  • Work with cross-functional partners across the business




The candidate will work on building the next generation of eCommerce technologies at the WalmartLabs search ranking team. She/He will have the opportunity to build state of the art search and browse ranking algorithms that power Walmart's eCommerce websites and mobile applications, serving millions of requests per day and generating billions of dollars of revenue per year.

#LI-DC1

Minimum Qualifications


  • PhD in information retrieval, Data mining, Machine learning, NLP, Statistics or related areas


  • Programming experience in either Python or JAVA


  • Strong understanding of one of probability-statistics/optimization/linear algebra


Additional Preferred Qualifications


  • Experience working on commercial search/recommendation engines or publishing in top conferences like SIGIR, KDD, WSDM, NIPS, ACL etc.


  • Experience with techniques like text retrieval models, click models, learning to rank, explore exploit, reinforcement learning, deep learning etc.


  • Experience with big data technologies such as hive, hadoop, spark etc.


Company Summary

Walmart Global eCommerce is comprised of Walmart.com, VUDU, SamsClub.com, and our technical powerhouse @WalmartLabs. Here, innovators incubate next gen e-commerce solutions in real-time. We integrate online, physical, and mobile shopping experiences for billions of customers around the globe. How do we do it? We continuously build and invest in new technology including open source tools and big data innovations. Data scientists, front and back-end engineers, product managers, and web and UX/UI teams collaborate alongside e-commerce experts to envision, prototype, and bring revolutionary ideas to life in a dynamic, flexible and fun work culture.


Req ID:

831131BR



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