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Costco Wholesale Logo

Software Engineer - Digital Site Development

Costco Wholesale

$85,000 - $225,000
Sep 16, 2025
Seattle, WA, US
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Costco IT is responsible for the technical future of Costco Wholesale, aiming to build the next generation retail environment and enhance member experience through modern user interface components and functional improvements.

Requirements

  • 7+ years’ previous experience working as a React.js developer.
  • 7+ years’ experience in React.js, HTML, CSS3.
  • Vast experience in JavaScript and React concepts, advanced front-end coding skills, and an expert level understanding of progressive web applications.
  • Extensive experience on front-end development and demonstrated ability to work in a fast-paced environment.
  • Proficiency with building responsive layouts using CSS and CSS-precompilation.
  • Strong understanding of cross-browser compatibility.
  • Ability to integrate 3rd party APIs and a strong understanding of REST and GraphQL patterns.

Responsibilities

  • Develops the conceptual systems architecture design and the supporting technologies needed to enable new and/or enhanced functionality within a given product/application, applying principles that promote availability, reusability, interoperability, and security into the design framework.
  • Performs development, optimization, and automation activities to support the implementation of a product/application.
  • Develops and implements front-end architecture to support user interface concepts.
  • Drives engineering best practices to deliver higher quality and scalable solutions.
  • Designs, builds, debugs, optimizes, and implements solutions in approved tool sets and databases.
  • Supports, extends, and builds automated CI and CD pipelines.
  • Designs and delivers DevSecOps automation for app deployment and testing.

Other

  • This position will be filled onsite in Issaquah, WA, or Dallas, TX.
  • Passion for supporting, collaborating, and coaching Engineering teams.
  • Comfortable driving code reviews and operating as anointed approver.
  • Strong troubleshooting and problem-solving skills; strong interpersonal, verbal, and written communication skills; strong relationship builder in cross-functional teams.
  • Self-motivated with a positive, can-do attitude.