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Keeper Security Logo

Senior Software Engineer - Browser Ext

Keeper Security

Salary not specified
Aug 29, 2025
El Dorado Hills, CA, USA
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Keeper Security is looking to solve the problem of developing and executing automated tests, enhancing test suites, and ensuring the quality of their web applications, specifically for their Browser Extension team.

Requirements

  • 5+ years of experience in JavaScript development, including proficiency in core JavaScript concepts.
  • 3+ years of experience with React, Redux, Jest, and TypeScript.
  • Strong experience with browser extension development and the unique challenges it presents (e.g., compatibility across different browsers, browser APIs).
  • Experience with modern web development tools and workflows, including build tools like Webpack, version control using Git, and CI/CD pipelines.
  • Solid understanding of frontend architectures, including component-based development, state management, and UI/UX principles.
  • Experience with testing frameworks such as Jest and writing comprehensive unit and integration tests.
  • Ability to maintain and improve a large codebase, ensuring it remains stable, scalable, and maintainable.

Responsibilities

  • Design, build, and maintain high-quality, scalable, and secure features for the Keeper Browser Extension using JavaScript, React, Redux, and Jest.
  • Work closely with product managers, UX/UI designers, and other engineers to define requirements and deliver the best possible user experience.
  • Ensure the highest standards for coding practices, including test-driven development (TDD), writing unit tests with Jest, and participating in code reviews.
  • Continuously analyze, improve, and optimize the performance, reliability, and security of the browser extension to meet the growing needs of users.
  • Review, maintain, and improve the current codebase, fixing bugs, implementing new features, and refactoring code as necessary to keep it scalable and maintainable.
  • Actively engage in code reviews to ensure quality, share knowledge with team members, and uphold coding standards.
  • Keep up to date with the latest trends, best practices, and tools in web development, browser extensions, and cybersecurity.

Other

  • Bachelor’s degree in Computer Science, Engineering, or a related technical discipline, or equivalent practical experience.
  • Excellent communication skills, with the ability to collaborate effectively with remote teams.
  • Medical, Dental & Vision (inclusive of domestic partnerships)
  • Employer Paid Life Insurance & Employee/Spouse/Child Supplemental life
  • Voluntary Short/Long Term Disability Insurance