Senior Software Engineer, Browser Extension
Keeper Security· Cybersecurity· May 20, 2026 · 5mo agoPosted 160 days ago
United States
Remote
Full-time
Senior
$137K–$195K est.
5+ years exp
Before you apply
Ghost Signal:
Open since May 20, 2026 — 160 days, and still accepting applications.
Job description
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.
About Keeper
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 KeeperSecurity.com .
About the Job
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.
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.
Help identify areas for process improvement, code refactoring, and potential technical debt resolution.
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.
Strong problem-solving skills and ability to debug complex issues.
Excellent communication skills, with the ability to collaborate effectively with remote teams.
Preferred Qualifications:
Bachelor’s degree in Computer Science, Engineering, or a related technical discipline, or equivalent practical experience.
Experience working with security technologies and understanding of cybersecurity principles, particularly with regard to browser security and data protection.
Experience with performance optimization for browser extensions, focusing on load times, memory management, and responsiveness.
Familiarity with web standards (HTML, CSS, JavaScript) and accessibility best practices.
Benefits:
Medical, Dental & Vision (inclusive of domestic partnerships)
Employer Paid Life Insurance & Employee/Spouse/Child Supplemental life
Voluntary Short/Long Term Disability Insurance
401K (Roth/Traditional)
A generous PTO plan that celebrates your commitment and seniority (including paid Bereavement/Jury Duty, etc)
Keeper Security, Inc. is an equal opportunity employer and participant in the U.S. Federal E-Verify program. We celebrate diversity and are committed to creating an inclusive environment for all employees.
Keeper Candidate Privacy Notice
This notice explains how Keeper Security processes your personal data during recruitment. Depending on the role and location, the Controller of personal data (the organization responsible for determining why and how personal data is processed) will be Keeper Security Inc. (US), Keeper Security EMEA Ltd. (Ireland), or Keeper Security APAC K.K (Japan).
1. Data We Collect
Information You provide:
Contact details, CV/resume, cover letter
Employment history, qualifications, work eligibility
Application responses and uploaded documents
Information We generate:
Interview notes, assessments, communications
Scheduling information
Information From Others:
Recruiter/referral information who submit your profile
References (with your consent, before final offer)
Public professional profiles
Background verification (post offer)
Voluntary Diversity and Equal Opportunity Information
We may ask you to voluntarily provide diversity information including race/ethnicity, gender, disability status and veteran status (US). Providing this information is optional and Keeper collects this data in order to comply with EEOC and similar requirements
2. How We Use Your Data
Assess your application and suitability
Manage interviews and recruitment workflow
Consider you for other/future roles (we may seek your consent to keep your information on our systems beyond the retention period specified)
Comply with employment law obligations
3. Legal Basis
Legitimate Interests (recruitment management, security and integrity of the hiring process)
Contracting steps (for progressed candidates)
Legal and regulatory compliance obligations; explicit consent where required
4. Who We Share Information With
Internal:
HR, hiring managers, interviewers*, IT support for system administration
*Note - diversity and equal opportunity data is not shared with hiring managers.
Third Parties:
Service providers who assist with:
Applicant tracking, recruitment systems and assessment providers
Background verification vendors (post offer)
Recruitment agencies (where applicable)
Tools to support communication, collaboration and to securely store your data
Keeper ensures that all our third parties are contractually bound to protect your personal data with adequate safeguards in place.
5. International Transfers
Your data may be accessed by Keeper entities globally as needed for the purposes of hiring and decision making. We protect any such data transfer between Keeper entities using appropriate safeguards under applicable data protection laws.
6. Security
We implement appropriate technical and organizational measures to protect your data, consistent with our industry leading security standards.
7. Retention
We keep your data for 24 months from your last application activity, then delete or anonymize it.
Exceptions:
You opt into our talent database for further retention by providing consent (extended retention)
You're hired (transfers to employee records)
8. Your Rights
You have the following rights and can contact us at the email below to exercise them:
Access, correct, or delete your data, subject to applicable law and retention requirements
Object to or restrict processing
Withdraw consent (where applicable)
Request data portability
Lodge a complaint with your data protection authority
If you become an employee, your rights regarding your employee record are governed by our internal Employee Privacy Notice and certain data will be retained as required under relevant laws such as employment or tax law.
When you request access to your personal data, some information may be redacted if it includes the personal data of other individuals or information that we must protect in order to preserve their privacy rights.
9. Automated Decisions
Keeper does not make hiring decisions using solely automated processing.
10. Contact - Candidates can send privacy questions to: privacy@keepersecurity.com
Application prep
Use the role’s language and application details while tailoring your materials.
Keywords to mirror
javascriptreacttypescriptci/cdaccessibility
- Platform
- greenhouse
- Effort
- quick
Benefits
Benefits detected in the listing.
Dental
Vision
401k
Pto