Senior Software Engineer, Browser Extension

Keeper Security is hiring talented JavaScript / ReactJS developers to join the Browser Extension team. This is a 100% remote position! Join a dynamic and innovative team dedicated to changing the landscape of cybersecurity.

Keeper’s cybersecurity software is trusted by millions of people and thousands of organizations, globally. Keeper is published in 23 languages and is sold in over 150 countries. Join one of the fastest-growing cybersecurity companies and be responsible for developing and executing automated tests, enhancing test suites, and ensuring the quality of our web applications.

Keeper Security is transforming cybersecurity for organizations globally with zero-trust privileged access management built with end-to-end encryption. Keeper’s cybersecurity solutions are FedRAMP and StateRAMP Authorized, SOC 2 compliant, FIPS 140-2 validated, as well as ISO 27001, 27017 and 27018 certified. Keeper deploys in minutes, not months, and seamlessly integrates with any tech stack to prevent breaches, reduce help desk costs and ensure compliance.

Trusted by millions of individuals and thousands of organizations, Keeper is the leader for password, passkey and secrets management, privileged access, secure remote access and encrypted messaging. Learn how our zero-trust and zero-knowledge solutions defend against cyber threats at

We are looking for a talented Senior Software Engineer to join the Browser Extension team. As part of the team, you will be responsible for developing and enhancing the browser extension features that empower millions of users to secure their digital lives. You’ll be working with cutting-edge technologies like JavaScript, React, Redux, Jest, and more, ensuring that our browser extensions are reliable, secure, and easy to use.

• 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.
• Help identify areas for process improvement, code refactoring, and potential technical debt resolution.

• 5+ years of experience in JavaScript development, including proficiency in core JavaScript concepts.
• 3+ years of experience with React, Redux, Jest, and Type Script.
• 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.
• Strong problem-solving skills and…