Senior Software Engineer - Data

| South Bay | Hybrid
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Position Summary...
What you'll do...
Position/Project Summary
As a Senior Software Engineer you are responsible for developing high performance and scalable ETL platform and jobs that meet the needs of next generation Supply Chain, in particular it's Walmart Fulfillment Services (exposing Walmart's Supply chain assets to Sellers) that is built largely on an event driven platform implemented via a micro-service architecture. The platform runs in the public cloud and uses a large number of technologies and middleware. This product is responsible for enabling sellers to use Walmart's services to fulfill customer orders taken on behalf of seller on Walmart.com. We are looking to bring more intellectually curious engineers who are passionate about technology in general.
Responsibilities include:

  • Demonstrate up-to-date expertise in Software Engineering and apply this to the development, execution, and improvement of action plans.
  • Participate in medium- to large-scale projects.
  • Participate in team of application engineers, architect and product visionaries to design, prototype and build technology-driven products that will serve the current and future needs of ecommerce
  • Analyzes business problems to design solutions and/or implements and tests complex code changes for specific requirements or application/standalone program.
  • Primarily responsible for delivering high quality technical designs and code for the product requirements in a fast-paced agile scrum sprint.
  • Designing complex algorithms which are both CPU and memory efficient.
  • Implement ETL jobs as per the design, generate test cases, perform code reviews and write feature documentation.
  • Implement validations to ensure data is accurate and alert to get notified about any discrepancies.
  • Perform build, deployment and continuous integration processes to move the code and configurations from local development environments to QA & Production environments.
  • Drive production deployments using platform's automated CI and deployment tools
  • Provide support as SME on the data that's captured.
  • Responsible for production environment health as first priority, enabling automated monitoring and alerting and ensuring close to 100% uptime.
  • Support Business requests for investigation and analysis
  • Troubleshoot business and production issues
  • Help the team leverage and contribute to open-source technologies


Manager's Ideal Candidate Must-Haves (skills required)

  • Bachelor's Degree in Computer Science or related field and 5-7 years or Master's Degree in Computer Science or related field and 3-5 years of experience
  • Proven industry experience with large scale distributed systems
  • Solid experience with object-oriented and/or event driven systems
  • Strong programming experience in object-oriented programming e.g. Java, Scala
  • Experience with big data technologies (Hadoop, Hive, Spark)
  • Experience analyzing the data sets and optimizing resource consumption for ETLs.
  • Working experience with Kubernetes
  • In depth knowledge of SQL/No-SQL and database technologies (Oracle , Cosmos DB, ElasticSearch, Casandra and Solr. )


Manager's Preferred Qualifications ("nice to haves")

  • Scripting skills in at least one of the following: Shell, Perl, Python.
  • Working experience with cloud technologies like Azure, GCP.
  • Strong aptitude for writing efficient code
  • Excellent data analytics skills and ability to explore and identify data issues
  • Attitude to thrive in a fun, fast-paced start-up like environment
  • Experience in production system operations (logging, telemetry, alerting etc.)
  • Excellent communication and problem-solving skills
  • Has ambition and vigor to add value to a rapidly growing development team


Duties (Skill Set):

  • Design, Develop, prototype and build ETL pipelines using Spark, Python.
  • Working on SQL/No-SQL database technologies such as Oracle, Cosmos DB, ElasticSearch, Casandra and Solr.
  • Working with Async Message processing systems like Kafka and JMS technologies to process the messages and integrate across systems.
  • Tune performance of the jobs by understanding and monitoring resource consumption of both memory and CPUs.
  • Build and setup jobs to test the quality of the data by comparing with alternate data sources.
  • Setup jobs to be able to read/write from cloud storage technologies (Azure blob, file storage, Google cloud storage).
  • Developing functional and unit test cases by using Junit and TestNG frameworks.
  • Building Continuous code Integration & deployment pipelines using tools like Jenkins and Maven.
  • Working on code version control systems like GitHub and project tracking and management tools like JIRA, Kanban and Confluence.
  • Monitor job status and identify root cause for failures and necessary changes to resolve the problem from reoccurring in future.
  • Hand-On experience on application logging, reporting and monitoring tools like Splunk and Grafana


About Global Tech
Imagine working in an environment where one line of code can make life easier for hundreds of millions of people and put a smile on their face. That's what we do at Walmart Global Tech. We're a team of 15,000+ software engineers, data scientists and service professionals within Walmart, the world's largest retailer, delivering innovations that improve how our customers shop and empower our 2.2 million associates. To others, innovation looks like an app, service or some code, but Walmart has always been about people. People are why we innovate, and people power our innovations. Being human-led is our true disruption.
We're virtual
Working virtually this year has helped us make quicker decisions, remove location barriers across our global team, be more flexible in our personal lives and spend less time commuting. Today, we are reimagining the tech workplace of the future by making a permanent transition to virtual work for most of our team. Of course, being together in person is an important part of our culture and shared success. We'll collaborate in person at a regular cadence and with purpose.
Minimum Qualifications...
Outlined below are the required minimum qualifications for this position. If none are listed, there are no minimum qualifications.
Bachelor's degree in Computer Science and 3 years' experience in software engineering or related field OR 5 years' experience in software
engineering or related field.
Preferred Qualifications...
Outlined below are the optional preferred qualifications for this position. If none are listed, there are no preferred qualifications.
Master's degree in Computer Science or related field and 2 years' experience in software engineering or related field
Primary Location...
840 W CALIFORNIA AVE, SUNNYVALE, CA 94086-4828, United States of America

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