Senior, Software Engineer

Walmart

Actively hiring
(Usa) Crossman Excellence Building Ca Sunnyvale Home Office, US Posted 42 days ago $117,000–$234,000 / year
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At a glance

AI generated

TL;DR

Join the Mobile Performance Engineering team at Walmart as a mid-level software engineer responsible for building observability tools that provide deep insights into mobile application performance. You will develop and maintain MappWhiz, an in-house profiling library that monitors CPU consumption, memory pressure, battery drain, call stacks, and UI jank across real and cloud-hosted devices. Your daily tasks include implementing new profiling capabilities, integrating with device tooling and cloud platforms, contributing to test framework support, extending the metrics pipeline, and exploring Agentic AI features for intelligent performance analysis. The role requires proficiency in Java or Python, experience with Android and iOS development, familiarity with mobile test automation frameworks, time-series databases like KairosDB, and cloud testing platforms such as Sauce Labs. Strong curiosity about AI-assisted engineering is a plus.

Skills

Python Java Grafana KairosDB Appium TestNG JUnit XCTest Sauce Labs ADB Xcode Perfetto Instruments CI/CD Agentic AI LangChain OpenTelemetry Android Memory Profiler Heaptrack MAT

What you'll do

  • Develop and maintain core MappWhiz profiling components to ensure high reliability during automated test runs.
  • Implement new profiling capabilities such as native heap dump analysis and UI trace collection across Android and iOS platforms.
  • Build integrations with mobile device tooling and cloud testing platforms for seamless local and cloud-based test execution.
  • Contribute to test framework support, making profiling instrumentation easy for consuming teams on both platforms.
  • Extend the metrics pipeline to accurately tag performance data by various attributes for trend tracking over time.
  • Work on reporting layers to deliver actionable regression detection and optimization recommendations via HTML reports and notifications.
  • Explore Agentic AI features like LLM-assisted anomaly detection to automate root cause analysis in collected profiling data.

What we're looking for

  • 4-7 years of software engineering experience with demonstrated strength in Java or Python.
  • Fair understanding of Android and iOS mobile development and testing tools and workflows.
  • Experience with mobile performance engineering and profiling, including CPU, memory, battery analysis.
  • Working knowledge of mobile test automation frameworks such as Appium, TestNG, JUnit, XCTest.
  • Familiarity with time-series databases (KairosDB, InfluxDB) and observability tools like Grafana.
  • Exposure to or interest in Agentic AI, LLMs, and AI-assisted developer tooling.

Market check

Salary context

This $117,000–$234,000 range sits above 76% of similar postings on FindRole.

Peer median band

$117,000–$203,940

Median floor and ceiling across peers.

Typical midpoint (25–75%)

$139,050–$175,500

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.

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