Staff, Software Engineer

Wal-Mart•Sunnyvale, CA

45d•Hybrid

About The Position

International Recommendations platform is a multi-tenant framework that powers the personalization experiences for Mexico, Canada, and other Walmart International sites. The team drives innovation in Machine Learning to provide personalized results for our customers and drive business KPIs. As a Staff Software Engineer, you'll spend your days translating requirements into solutions, writing code, collaborating with teams, and providing us with the insights necessary to think beyond the status quo. You'll oversee small project teams consisting of other engineers who will look to you as a trusted advisor, a subject matter expert who provides guidance and the right tools. About Team: Focusing on customer, associate and business needs, this team works with Walmart International, which includes more than 5,200 retail units, operating in 23 countries such as Canada, Central America, Chile, China, India, Mexico and South Africa to name a few. What you'll do: Design scalable, low-latency services to host models; productionize prototypes on the cloud, including data pipelines, training & inference pipelines, and pre & post-processing routines. Build, tune, and optimize machine learning models; collaborate with data scientists to refine data models, design improvements, conduct experiments, and iteratively improve results. Develop and optimize data pipelines to collect, consolidate, and normalize data to feed to machine learning models for offline evaluation and real-time execution. Create monitoring dashboards; perform latency tuning of deep learning models, scaling solutions to enterprise level; investigate and resolve performance issues. Run experiments to compare models, features, and hyperparameters; utilize A/B testing and continuous monitoring to validate and adjust models. Utilize the broad and deep knowledge of ML and Software Engineering to contribute to the roadmap of Walmart's core machine learning capabilities. Work closely with our product, design, and UX teams to create amazing and intuitive experiences that make it effortless to connect different apps together. Help put tools, processes, and documentation in place to improve our code quality. Demonstrate technical expertise in solving challenging programming and design problems. Troubleshoots business and production issues by gathering information (for example, issue, impact, criticality); performing root cause analysis to reduce future issues; engaging support teams when needed; developing solutions; driving the development of an action plan; performing actions as designated in the plan; and completing online documentation. Demonstrates up-to-date expertise and applies this to the development, execution, and improvement of action plans by providing expert advice and guidance to others in the application of information and best practices; supporting and aligning efforts to meet customer and business needs; and building commitment for perspectives and rationales. Possess excellent communication skills to be able to communicate with peers and stakeholders. Enjoy spending your day writing & reviewing code and also lead design discussions.

Requirements

Bachelor's Degree in Computer Science or related field and 10 years of experience in software engineering or Master's Degree in Computer Science or related field and 5 years of experience in software engineering
4+ years of proven work experience in designing and Architecting cloud native, distributed, high performant and scalable microservices.
4 years of experience with database languages (SQL, PL/SQL, PG-PL/SQL), version control (Git), data structures and algorithms
4 years of experience in writing production quality software with Python; knowledge of Unit testing in Python, Mocking, Pytest.
4 years of experience in architecting ML solutions given an abstract business problem
3 years of experience with MLOps, Model development lifecycle with knowledge of Training and Deployment pipelines for Machine Learning solutions on the cloud
3 years of experience building training and inference pipelines
Hands on experience with building data pipeline with Spark, Hadoop, Redshift and/or Hive
Experience with Kubernetes, Helm, microservice architecture and design, and best practices around multithreading, networking, offline storage, and performance tuning
A disciplined approach to development, code review, testing, documentation, and code structure in a team environment.
Design/Architecting Applications in No-SQL database such Cassandra, and Azure Cosmos DB.
Utilize Industry Research and Innovation to build Next Generation systems to Improve Walmart Technology Environment.

Nice To Haves

Experience with GCP and Airflow is a plus.
Prefer experience with building Machine Learning models and pipelines related to personalization.
Master's degree in Computer Science, Computer Engineering, Computer Information Systems, Software Engineering, or related area and 2 years' experience in software engineering or related area
We value candidates with a background in creating inclusive digital experiences, demonstrating knowledge in implementing Web Content Accessibility Guidelines (WCAG) 2.2 AA standards, assistive technologies, and integrating digital accessibility seamlessly.
The ideal candidate would have knowledge of accessibility best practices and join us as we continue to create accessible products and services following Walmart's accessibility standards and guidelines for supporting an inclusive culture.

Responsibilities

Design scalable, low-latency services to host models; productionize prototypes on the cloud, including data pipelines, training & inference pipelines, and pre & post-processing routines.
Build, tune, and optimize machine learning models; collaborate with data scientists to refine data models, design improvements, conduct experiments, and iteratively improve results.
Develop and optimize data pipelines to collect, consolidate, and normalize data to feed to machine learning models for offline evaluation and real-time execution.
Create monitoring dashboards; perform latency tuning of deep learning models, scaling solutions to enterprise level; investigate and resolve performance issues.
Run experiments to compare models, features, and hyperparameters; utilize A/B testing and continuous monitoring to validate and adjust models.
Utilize the broad and deep knowledge of ML and Software Engineering to contribute to the roadmap of Walmart's core machine learning capabilities.
Work closely with our product, design, and UX teams to create amazing and intuitive experiences that make it effortless to connect different apps together.
Help put tools, processes, and documentation in place to improve our code quality.
Demonstrate technical expertise in solving challenging programming and design problems.
Troubleshoots business and production issues by gathering information (for example, issue, impact, criticality); performing root cause analysis to reduce future issues; engaging support teams when needed; developing solutions; driving the development of an action plan; performing actions as designated in the plan; and completing online documentation.
Demonstrates up-to-date expertise and applies this to the development, execution, and improvement of action plans by providing expert advice and guidance to others in the application of information and best practices; supporting and aligning efforts to meet customer and business needs; and building commitment for perspectives and rationales.
Possess excellent communication skills to be able to communicate with peers and stakeholders.
Enjoy spending your day writing & reviewing code and also lead design discussions.

Benefits

Beyond our great compensation package, you can receive incentive awards for your performance.
Other great perks include 401(k) match, stock purchase plan, paid maternity and parental leave, PTO, multiple health plans, and much more.
Health benefits include medical, vision and dental coverage.
Financial benefits include 401(k), stock purchase and company-paid life insurance.
Paid time off benefits include PTO (including sick leave), parental leave, family care leave, bereavement, jury duty, and voting.
Other benefits include short-term and long-term disability, company discounts, Military Leave Pay, adoption and surrogacy expense reimbursement, and more.
You will also receive PTO and/or PPTO that can be used for vacation, sick leave, holidays, or other purposes.
Live Better U is a Walmart-paid education benefit program for full-time and part-time associates in Walmart and Sam's Club facilities.
Tuition, books, and fees are completely paid for by Walmart.

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