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Walmart

(USA) Principal, Software Engineer

Walmart

Published 13 May 2026
Sunnyvale, CA, USA
143K - 286K USD Annual
Part Time
Full Time

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Role Highlights

Languages used

GO

Key skills

Prompt Engineering
Training Data
ML Ops
Data Science
Computer Science
Integrations
API
CICD
Information Systems
Code Reviews
Data Quality
Test Automation
Test Engineer
LLMs
Machine Learning
Infrastructure
UI
Embeddings
ETL
ELT
Inference
Testing
Deployment
DataSets
Statistics
KPI
Regression
Transformation
Asynchronous
RAG
DataFlow
GDPR

Tools, Libraries and Frameworks

Vertex AI
Rest
BigQuery
Kafka
PyTest
Appium
Hive
MLFlow
Ruby On Rails
ADS
Selenium

Description

The Principal Engineer defines and leads the test engineering strategy for AI-powered advertising systems. This role involves architecting test frameworks and embedding quality standards into the development lifecycle for machine learning models, data pipelines, and real-time bidding infrastructure. The individual operates as a technical leader across engineering, data science, and product teams to ensure system reliability and performance. Responsibilities include establishing quality gates, conducting performance and chaos engineering, and implementing automated evaluation frameworks for generative AI components. The role also focuses on mentoring staff and senior engineers while driving proactive incident prevention through observability and defined service level objectives.

Required Qualifications and Skills

Candidates must possess at least eight years of experience in quality or test engineering, including three years at a Staff or Principal level within large-scale distributed systems. Required technical expertise includes designing test automation frameworks, validating data pipelines, and testing AI/ML systems. Proficiency in SQL is necessary for data validation, alongside experience with CI/CD quality gates and event-driven architectures. Regarding formal education, the role requires either a Bachelor’s degree in a relevant technical field with five years of experience or seven years of total experience in software engineering.

Disclaimer

Disclaimer: Job and company description information and some of the data fields may have been generated via GPT-4 summarisation and could contain inaccuracies. The full external job listing link should always be relied on for authoritative information.

About the company

Walmart

Size

404042

Founded

HQ

Bentonville, US

Public/Private

Public Company

Description

Sixty years ago, Sam Walton started a single mom-and-pop shop and transformed it into the worlds biggest retailer. Since those founding days, one thing has remained consistent: our commitment to helping our customers save money so they can live better. Today, were reinventing the shopping experience and our associates are at the heart of it. When you join our Walmart family of brands (Sam's Club, Bonobos, Moosejaw and many more!), youll play a crucial role in shaping the future of retail, improving millions of lives around the world. We are ecstatic to have been named a Great Place to Work® Certified May 2023 May 2024, Disability: IN 2023 Best Places to Work, and Fast Company 100 Best Workplaces for Innovators 2023. This is that place where your passions meet purpose. Join our family and build a career youre proud of.

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