Keeper Security, Inc. · 2 weeks ago
Senior Software Engineer, Autofill
El Dorado Hills, CA
Full-time
Hybrid
Senior Level
5+ years expKeeper Security is a fast-growing cybersecurity company looking for a Senior Software Engineer, Autofill to join their Browser Extension team. The role involves designing, implementing, and maintaining autofill systems to enhance user experience across major web browsers.
Cloud SecurityCyber SecurityIdentity ManagementSecuritySoftware
Responsibilities
Design, build, and maintain autofill detection and injection systems within Keeper’s browser extension
Implement and optimize form-field recognition, credential mapping, and autofill heuristics across a wide variety of web architectures
Ensure compatibility, performance, and reliability across major browsers (Chrome, Edge, Firefox, and Safari)
Collaborate with the Browser Extension team to integrate autofill logic with existing Keeper APIs, storage, and credential services
Debug, test, and resolve complex issues in real-world web environments and dynamic single-page applications (SPAs)
Stay up to date with browser API updates (WebExtensions, Manifest V3) and ensure compatibility across evolving browser platforms
Participate in code reviews, testing, and continuous improvement efforts to ensure scalability and long-term maintainability of autofill features
Work closely with QA to automate regression tests and validate autofill behavior across browsers and frameworks
Qualification
Required
5+ years of experience in JavaScript and/or TypeScript development
Strong experience with React and modern state management patterns
3+ years of experience working on browser extensions using WebExtensions APIs, Manifest V3, or similar browser frameworks
Strong knowledge of DOM manipulation, form parsing, and input field detection techniques
Proven experience building or maintaining autofill, form-detection, or credential-injection systems
Familiarity with Jira, Jest, and modern frontend development practices
Experience debugging and profiling browser extensions across multiple browsers
Strong understanding of browser security models, content scripts, and extension permissions
Excellent problem-solving skills with the ability to debug and optimize performance in large codebases
Strong communication skills and ability to collaborate in a remote, cross-functional environment
Preferred
Experience with credential or password managers (e.g., Keeper, 1Password, Dashlane, Bitwarden, LastPass)
Familiarity with SPA frameworks (React, Angular, Vue) and how they impact form detection
Experience optimizing autofill reliability and performance at scale
Bachelor's degree in Computer Science, Engineering, or a related technical field, or equivalent practical experience
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)
Company
Keeper Security, Inc.
Keeper Security is transforming cybersecurity for millions of individuals and thousands of organizations globally.
501-1000 employees
H1B Sponsorship
Keeper Security, Inc. has a track record of offering H1B sponsorships. Please note that this does not
guarantee sponsorship for this specific role. Below presents additional info for your
reference. (Data Powered by US Department of Labor)
Distribution of Different Job Fields Receiving Sponsorship
Represents job field similar to this job
Trends of Total Sponsorships
2021 (1)
Funding
Current Stage
Late StageTotal Funding
$60.25MKey Investors
Summit PartnersInsight Partners
2023-05-09Private Equity
2020-08-13Private Equity· $60M
2011-01-01Seed· $0.25M
Leadership Team
Darren Guccione
Co-founder and CEO
Craig Lurey
CTO, Co-founder
Recent News
2026-01-15
Company data provided by crunchbase