Senior, Software Engineer at Walmart Sunnyvale, CA

Position Summary

Senior Software Engineer – TV SDK at Walmart, located in Sunnyvale, CA. You will join a team designing, building and maintaining native/hybrid apps for multiple TV operating systems (Tizen, webOS, Roku, Android

TV/FireTV, Vidaa, Vizio, etc.). You will create cross‑platform SDK layers (Type Script / C++ / Rust core) that expose a single API surface to product teams while calling OS‑specific services under the hood.

• Optimize video playback pipelines – HLS/DASH, Widevine/Play Ready/Fair Play DRM, HDR tone‑mapping to ensure 4K content meets frame‑budget and QA thresholds on each SoC.
• Integrate ad‑tech components (IMA, VAST/VMAP, SSAI beacons, OMID) with tight SLA for mid‑rolls, dynamic pods and interactive overlays.
• Automate CI/CD workflows, including containerized build farms, device‑cloud testing (Bitrise, Browser Stack, Lambda Test), firmware signing and phased rollouts.
• Deep‑dive debug and performance profiling – memory, GPU bandwidth, GC pauses – and guide OEM partners on kernel or firmware fixes.
• Mentor and document: publish coding patterns, lint rules, sample apps and brown‑bag talks for the broader engineering organization.

• 5+ years shipping production software for TV OSs such as Tizen, webOS, Roku, Android
  
  TV/FireTV or Vizio Smart Cast.
• Fluency in JavaScript/Type Script and one system language (C++, Rust, or Kotlin/Java/Go).
• Strong grasp of media frameworks (GStreamer, Exo Player, AV Foundation) and streaming protocols (HLS, DASH, CMAF).
• Experience integrating DRM, closed‑captioning, accessibility and remote‑control input models (D‑pad, voice, air‑mouse).
• Familiarity with graphics & UI toolkits:
  Canvas/WebGL, LGwebOS Enact, Samsung React‑TV‑Kit, Roku Scene Graph components.
• Comfort with device‑level constraints – CPU/GPU budgets, thermal limits, memory fragmentation – and profiling tools (Samsung Remote Test Lab, LG Developer Mode, Android GPU Inspector).
• Bachelor’s or higher in CS, EE or related field (or equivalent practical experience).

• Knowledge of ad decisioning & measurement stacks (Prebid CTV, SSAI, OM SDK, VAST
  4.2, SCTE‑35).
• Experience with ACR or device analytics (Inscape, Nielsen DAR, Conviva).
• Experience with Generative
  
  AI / ML inference on device (ONNXRuntime, Tensor
  
  RT) for upscaling, personalization or voice.
• Contributions to open‑source CTV frameworks or authorship of proposals in W3C Web Media or CTA‑WAVE groups.
• Familiarity with continuous localization (i18n/L10n) and regulatory compliance (GDPR/CCPA, energy consumption).

At Walmart, we offer competitive pay and performance‑based bonus awards. 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 (incl. sick leave), parental leave, family care leave, bereavement, jury duty and voting. Additional benefits include short‑term and long‑term disability, company discounts, Military Leave Pay and reimbursement for adoption or surrogacy expenses.

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 and meets or exceeds paid sick leave laws where applicable.

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 and other certificates. Tuition, books and fees are paid for by Walmart.

680

West California Avenue, Sunnyvale, CA94086‑4834, United States.

Walmart, Inc. is an Equal Opportunity Employer‑By Choice. We value diversity and strive to create an inclusive culture.