As a Principal Software Engineer on Walmart's Display Ads Serving team, you will design and develop core services and algorithms for optimizing display ad campaigns, focusing on budgeting, pacing, bidding, and auction strategies. You will work closely with Data Science and Product teams to gather requirements and formulate problems, collaborating with multiple engineering groups to build scalable, high-performance systems with robust observability. Key responsibilities include leading the design and implementation of optimization algorithms, establishing insights for improvement opportunities, and iterating on system enhancements. The role requires expertise in cloud-native architecture, distributed systems, and experience with feedback control or reinforcement learning algorithms. Proficiency in languages like Java, Python, or C++ is essential, along with a background in computer science or related fields, ideally at the master’s or PhD level. Experience in AdTech is highly beneficial as you work to connect brand owners and shoppers through relevant display ads, enhancing both business growth and shopper experience.
Design and develop core services for Display Ads optimization.
Lead the implementation of budgeting, pacing, and bidding algorithms.
Build scalable data pipelines to support real-time decision-making.
Collaborate with Data Science to prototype new optimization algorithms.
Develop offline simulation tools and online dark canary systems for iterative improvements.
Ensure high observability and performance in engineering solutions.
What we're looking for
Proficient in Java, Python, C++, or similar programming languages.
Expertise in designing and implementing cloud-native architectures and distributed systems.
Experience developing, deploying, and operating feedback control or reinforcement learning algorithms.
Strong background in computer science, operations research, or related fields; advanced degrees preferred.
Proven ability to collaborate with data scientists and multiple engineering teams on complex projects.
Capable of building low latency data pipelines for real-time bidding decisions and campaign optimization.
Market check
Salary context
This
$143,000–$286,000
range sits above
94%
of similar postings on FindRole.
Peer median band
$117,000–$234,000
Median floor and ceiling across peers.
Typical midpoint (25–75%)
$165,000–$214,500
Middle half of comparable postings.
Based on 240 comparable postings.*
* 240 is the maximum number of comparable postings sampled.
Employer
About Walmart
Walmart Inc. is the world''s largest retailer by revenue, operating a chain of hypermarkets, discount department stores, and grocery stores, as well as a growing e-commerce presence through Walmart.com. Industry: General Merchandise & Grocery Retail
Walmart currently has
495 open roles
on FindRole.
Listed pay typically runs
$117,000–$234,000
across 487 roles with salary data.