Principal Data Architect - Real-Time Billion-Scale Ad Tech

Walmart; Sunnyvale (CA); On-site; USD 143,000 - 286,000; Full time

Benefits offered by this job

Health benefits

401(k)

Stock purchase plan

Paid time off

Life insurance

Employee discounts

Job summary

Walmart in Sunnyvale, CA is seeking a Principal Engineer to architect scalable data systems processing billions of ad and customer signals across real-time, near-real-time, micro-batch, and batch workloads. You will unify advertising data across campaigns, identity, audiences, measurement, optimization, CRM, and advertiser lifecycle.

Lead architecture of high-throughput, low-latency platforms with governance, observability, and cost efficiency, while modernizing legacy pipelines and enabling

Qualifications

• Bachelor’s degree in Computer Science and 5 years’ experience in software engineering or related field.
• Option 2: 7 years’ experience in software engineering or related field.
• Option 3: Master’s degree in Computer Science and 3 years’ experience in software engineering or related field.
• 4 years’ experience in data engineering, database engineering, business intelligence, or business analytics.

Responsibilities

• Lead architecture of real-time, large-scale advertising and customer data platforms.
• Define workload patterns across streaming, near-real-time, micro-batch, and batch.
• Provide technical leadership across the full advertising lifecycle, including events, identity, audiences, campaigns, measurement, optimization, CRM, and marketing data.
• Build reusable, multi-tenant, configuration-driven platforms with standardized schemas, contracts, observability, privacy, and deployment patterns.
• Establish governed agentic data capabilities for discovery, pipeline creation, monitoring, diagnosis, optimization, onboarding, and AI-ready products.

Skills

Real-time data processing

Technical leadership

Distributed systems

Education

Bachelor’s degree in Computer Science

Master’s degree in Computer Science

Tools

Spark

Flink

Kafka

GCP

BigQuery

Dataproc

Dataflow

Airflow

Job description

Walmart in Sunnyvale, CA is seeking a Principal Engineer to architect scalable data systems processing billions of ad and customer signals across real-time, near-real-time, micro-batch, and batch workloads. You will unify advertising data across campaigns, identity, audiences, measurement, optimization, CRM, and advertiser lifecycle.

Lead architecture of high-throughput, low-latency platforms with governance, observability, and cost efficiency, while modernizing legacy pipelines and enabling