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Senior Software Engineer Sunnyvale, CA - Onsite

Job in Sunnyvale, Santa Clara County, California, 94087, USA
Listing for: ESR Healthcare
Full Time position
Listed on 2025-12-24
Job specializations:
  • Software Development
    Software Engineer, Senior Developer, React.js, Full Stack Developer
Job Description & How to Apply Below
Position: Senior Software Engineer Sunnyvale, CA   -  Onsite

Senior Software EngineerSunnyvale, CA - Onsite
Duration | Long Term

Job Responsibilities:

  • Research, guide, and execute frontend architecture changes, including but not limited to Graph

    QL, server-side React rendering, and Flow typing.
  • Build reusable React components with modular CSS, manage data on the client with Redux, use react query, and Graph

    QL.
  • Measure and resolve performance bottlenecks, using tools like Chrome Dev Tools, Lighthouse, Web Pagetest, or custom tooling.
  • Refactor or improve existing code while constantly finding ways to improve all of our JavaScript code.
  • Work closely with our product, design, and UX teams to create amazing and intuitive experiences that make it effortless to connect different apps together.
  • Help put tools, processes, and documentation in place to improve our code quality.
  • Review code written by other team members or other teams.
  • Ship to hundreds of thousands of users every day while having lots of autonomy in terms of code and feature ownership.
  • Work with complex and varied data structures (APIs can be a little eccentric).
  • Help out with our Node-based developer platform.
  • Share what you know and learn either one-on-one or with lightning talks to the group.
  • Give back to the community via open source and blog posts.
  • Experiment: this is a startup-like environment so everything can change as we experiment with doing more custom partnership work.
  • As a part of Walmart's all-hands philosophy, help customers via support to ensure they have the best experience possible.
  • You'll also have the opportunity to specialize in a variety of areas of the codebase, including core product or platform development. Focusing on a specialization will not limit your area for growth at Walmart, as each engineer brings a unique perspective and can contribute differently to all areas. We encourage participation and will frequently have engineers contribute across teams to assist in projects.
  • Minimum Qualifications

    • BS/MS with a minimum of 10 years of experience in software engineering.
    • Minimum 8 years of experience in JavaScript.
    • Minimum 2 years of experience in Node JS development.
    • Minimum 1 year of experience in Graph

      QL.
    • Experience in writing extensive unit tests.
    Preferred Qualifications
    • 12-14 years of experience in software development using modern languages (NodeJS, React, etc.).
    • Thorough understanding of React, Node.

      JS and its core principles.
    • Experience in React Query or nx is a big plus.
    • Own code quality and experience in writing extensive unit tests.
    • Familiarity with modern front-end build pipelines and tools.
    • Proven ability to learn and adapt to new technologies and frameworks quickly.
    • Ability to deliver in Agile method (SCRUM).

    Excellent written communication and follow-up skills.

    #J-18808-Ljbffr
    Position Requirements
    10+ Years work experience
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