Walmart

Principal, Software Engineer

Walmart
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6 days ago
Sunnyvale, CA, USAStaff+
H1B sponsor

Base Salary

$143k - $286k/yr

Responsibilities

  • Lead the technical direction of 30+ engineers and mentor engineering teams.
  • Architect and deliver scalable, cloud-native, distributed platform capabilities for AdTech measurement and reporting.
  • Develop measurement solutions covering incrementality, attribution, data cleanroom measurement, partner integrations, and GenAI-powered reporting.
  • Apply machine learning, transformer models, statistical methods, and real-time inference to large-scale AdTech problems.
  • Conduct design reviews and align engineering strategy with leadership and cross-functional stakeholders.
  • Troubleshoot business and production issues, coordinate support teams, execute resolution plans, and document outcomes.

Requirements

  • Bachelor’s degree in computer science, computer engineering, computer information systems, software engineering, or a related area plus 5 years of software engineering or related experience, or 7 years of software engineering or related experience.
  • 8+ years of experience in machine learning and data-intensive platform development.
  • 4+ years of experience as a staff-plus technical lead.
  • Experience with distributed data processing tools and databases such as Spark Streaming, Flink, Kafka, Ray, BigQuery, Druid, and Cassandra.
  • Experience implementing statistical and machine learning methods for classification, regression, ranking, or recommendation.
  • Experience training transformer-based models and implementing real-time inference on GPU-backed infrastructure.
  • Experience with ML libraries and tools such as PySpark, PyTorch, CUDA, and Triton.
  • Experience working cross-functionally with data scientists, machine learning engineers, and product managers.
  • Experience in AdTech measurement and knowledge of AdTech business domains.
  • Preferred qualifications include a master’s degree, PhD, academic publications, patents, AdTech targeting or bidding experience, real-time streaming experience, query optimization knowledge, and distributed systems expertise.
  • Knowledge of digital accessibility practices, including WCAG 2.2 AA standards and assistive technologies, is preferred.

Benefits

  • Medical, vision, and dental coverage; 401(k), stock purchase, company-paid life insurance, and disability benefits.
  • Paid time off, sick leave, parental leave, family care leave, bereavement leave, jury duty leave, voting leave, and military leave pay.
  • Company discounts and adoption and surrogacy expense reimbursement.
  • Walmart-paid education benefits through Live Better U, including tuition, books, and fees for eligible programs.
  • Annual salary range of $143,000.00-$286,000.00 plus performance-based bonuses and possible stock compensation.
  • Primary location is Sunnyvale, California.

Tech Stack

Apache CassandraApache FlinkApache KafkaApache SparkGoogle BigQueryPyTorch

Categories

BackendData EngineeringML Engineering
Walmart

About Walmart

10,000+ employees

Walmart is a global omnichannel retailer that sells groceries, general merchandise, and services through Walmart and Sam's Club stores and online marketplaces for consumers and small businesses. Its model spans physical retail, e-commerce, advertising, and a vast supply chain, plus pharmacy, health, and financial services. Founded in 1962 and headquartered in Bentonville, Arkansas, Walmart Inc. is a public company on the NYSE (WMT) operating in the U.S. and multiple international markets.

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