Position Summary... We are building a first party, privacy centric advertising platform that unites retail data, smart TV inventory,and a growing CTV publisher network.Our mission is to deliver relevant, measurablead experiences while giving consumers full control of their data. What you'll do... As an AdTech Engineer on our CTV team, you will design, build, and scale lowlatency services that power serverside ad insertion (SSAI), dynamic ad decisioning, and realtime measurement across millions of smart TVs and OTT devices. You'll collaborate with product managers, data scientists, privacy engineers, and DSP/SSP partners to create an endtoend stack that bridges broadcastquality video with programmatic precision. Key Responsibilities Ad Delivery ; Decisioning Develop microservices for ad selection, pacing, and frequency capping that handle>100kQPS under Implement VAST4.x / VAST4.2, SCTE35 cuetone parsing, and OpenRTB2.6 bid request/response logic for CTV.

Streaming ; SSAI Build and optimize HLS/DASH manifest manipulation and stitchedsegment workflows using AWSMediaTailor, GCPMediaCDN, or an inhouse stack. Ensure frameaccurate ad breaks and seamless transitions across HDR, 4K, and variablebitrate profiles.

Measurement ; Privacy Integrate IAB OMSDKCTV signals, ACR fingerprints, and privacypreserving identifiers (PPIDs, EIDs) to attribute outcomes in real time. Partner with the privacy team to apply differential privacy, ondevice ML models, and cleanroom pipelines (e.g., SecureMultiPartyComputation) for closedloop ROAS measurement.

Programmatic Interfaces Build APIs for headerbidding adapters, Prebid.js/PrebidServer for CTV, and custom RTB auctions supporting dealIDs, firstparty audiences, and dynamic floors. Work with supplyside and demandside partners to certify integrations and troubleshoot bidstream anomalies.

Reliability ; Observability Automate rollouts via Kubernetes and GitOps; enforce canary releases and blue/green deployments. Instrument distributed tracing (OpenTelemetry), anomaly detection, and SLA dashboards to guarantee fivenines uptime during live sports and tentpole events.

Collaboration ; Leadership Translate product requirements into engineering design docs, influence architecture decisions, and mentor junior engineers. Contribute to opensource AdTech projects (Prebid, Video.js, IABTechLab) and represent the company in industry working groups.

About the team: Walmart's Advertising Technology group enables the connection between supplier brands and retail shoppers at unprecedented scale. We are a highly motivated group of engineers and data scientists, working in an agile group to solve sophisticated and high impact problems. We serve billions of ad requests every month with our high-performance ad servers. We build smart data systems that ingest, model, analyze and optimize the massive flow of data from online and store user activity and transactions. We use cutting edge machine learning, data mining and optimization algorithms on this data. Above all, we are laser focused on delivering experiences that our customers and advertisers love. Minimum Qualifications 8+years of backend software development experience (Golang, Java, Kotlin, C++ or Rust) with production services at scale. Deep knowledge of video streaming protocols (HLS, DASH, CMAF) and adserving standards (VAST, VPAID, VMAP, SCTE35). Handson experience with programmatic advertising (OpenRTB, header bidding, DSP/SSP APIs) and realtime bidding pipelines. Proficiency in AWS,GCP, or Azure cloud infrastructure, container orchestration (Kubernetes/EKS/GKE), and CI/CD. Strong grasp of data structures, distributed systems, and performance tuning for millisecondlevel latency. Bachelors degree in Computer Science, Electrical Engineering, or equivalent practical experience. Preferred Qualifications Prior work on CTV or OTT platforms (Roku, FireTV, AndroidTV, Tizen, webOS) and devicelevel SDKs. Experience with SSAI vendors (e.g., Yospace,StreamStitcher) or building inhouse manifest conditioners. Familiarity with privacyenhancing tech: Private Set Intersection (PSI), Differential Privacy, Federated Learning. Exposure to data pipelines (Kafka, Flink, Beam) and realtime analytics (Druid,ClickHouse, BigQuery). Contributions to IAB/IETF standards or opensource AdTech projects. Masters degree in a technical field. Why Join Us? Build a firstparty CTV ad stack from the ground up, touching everything from device firmware to cloud ML pipelines. Impact at scaleyour code will reach tens of millions of screens and influence billions in ad spend. Work with a , highcaliber team of AdTech veterans, data scientists, and product visionaries. Competitive compensation, stock, and benefits; flexible hybrid schedule; generous learning ; development stipend. At Walmart, we offer competitive pay as well as performance-based bonus awards and other great benefits for a happier mind, body, and wallet. 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. The amount you receive depends on your job classification and length of employment. It will meet or exceed the requirements of paid sick leave laws, where applicable. ? For information about PTO, see https://one.walmart.com/notices. ? ? Live Better U is a Walmart-paid education benefit program for full-time and part-time associates in Walmart and Sam's Club facilities. Programs range from high school completion to bachelor's degrees, including English Language Learning and short-form certificates. Tuition, books, and fees are completely paid for by Walmart. ? Eligibility requirements apply to some benefits and may depend on your job classification and length of employment. Benefits are subject to change and may be subject to a specific plan or program terms. ? For information about benefits and eligibility, see One.Walmart. ? Sunnyvale, California US-04397:The annual salary range for this position is $143,000.00-$286,000.00 ? Bentonville, Arkansas US-10866:The annual salary range for this position is $110,000.00-$220,000.00 ? ? ? ? ? ? ? ? ? ? Additional compensation includes annual or quarterly performance bonuses. ? Additional compensation for certain positions may also include: ? ? - Stock ? ? Minimum Qualifications... Outlined below are the required minimum qualifications for this position. If none are listed, there are no minimum qualifications. Option 1: Bachelor's degree in computer science, computer engineering, computer information systems, software engineering, or related area and 4 years experience in software engineering or related area.Option 2: 6 years experience in software engineering or related area. Preferred Qualifications... Outlined below are the optional preferred qualifications for this position. If none are listed, there are no preferred qualifications. Masters 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 Walmarts accessibility standards and guidelines for supporting an inclusive culture. Primary Location... 680 West California Avenue, Sunnyvale, CA 94086-4834, United States of America