Senior Software Engineer (Browser Extension) jobs in United States
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Cyberhaven · 1 day ago

Senior Software Engineer (Browser Extension)

positionUnited States
timeFull-time
remoteRemote
senioritySenior Level
date5+ years exp

Cyberhaven is redefining data security by understanding how data flows across organizations. They are seeking an experienced engineer to help build and enhance their browser extension, ensuring it’s secure, performant, and integrated with their platform.

Artificial Intelligence (AI)Cloud SecurityCyber SecurityInformation TechnologyNetwork SecuritySecurity
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H1B Sponsor Likelynote

Responsibilities

Design, build, and maintain a robust browser extension for Chrome, Edge, and other major browsers using Manifest V3 and modern APIs
Implement features that securely interact with web content and backend services, ensuring compliance with security best practices
Optimize performance and reliability across diverse environments and user workflows
Work closely with the endpoint agent and backend teams to ensure tight integration and consistent functionality across endpoints and services
Stay ahead of evolving browser APIs, security standards, and extension ecosystem changes
Participate in code reviews, testing, and continuous improvement of development processes

Qualification

Browser extension developmentJavaScript/TypeScriptBrowser extension APIsHTML/CSSSecure coding practicesGoBackground in security toolsSaaS products experienceCommunicationCross-functional collaboration

Required

5+ years of software engineering experience, with at least 3 years focused on browser extension development
Strong proficiency in JavaScript/TypeScript, HTML/CSS, and modern web technologies
Deep understanding of browser extension APIs (Chrome Extensions, Manifest V3, etc.) and security implications of interacting with web content
Experience with secure coding practices and handling untrusted data
Excellent communication skills and ability to work cross-functionally with product, design, and backend teams

Preferred

Background in security tools, SaaS products, or endpoint technologies
Knowledge of Go for backend integration

Company

Cyberhaven

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Cyberhaven is an AI-powered data security company focused on detecting and preventing data loss, insider threats, and protecting cloud data.
dateFounded in 2014
location
Palo Alto, California, USA
people-size201-500 employees
web-link
https://www.cyberhaven.com

H1B Sponsorship

Cyberhaven 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
2024 (1)

Funding

Current Stage
Late Stage
Total Funding
$236.5M
Key Investors
StepStone GroupRedpointAccomplice
2025-04-02Series D· $100M
2024-06-11Series C· $88M
2021-12-14Series B· $33M

Leadership Team

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Cristian Zamfir
Co-founder / VP Reliability and Security at Cyberhaven
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George Candea
Co-founder & Chief Scientist
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Recent News

PR Newswire
Cyberhaven Named to Built In's 2026 Best Places to Work Lists
2026-01-06
PR Newswire
Cyberhaven Ranked Among the Fastest-Growing Companies in North America on the 2025 Deloitte Technology Fast 500™
2025-11-19
PR Newswire
Cyberhaven Introduces Data Security Posture Management, Early Access
2025-11-04
Company data provided by crunchbase