Staff Software Engineer (Browser Extension)

Cyberhaven
United States, EU, Europe
Workplace: RemoteFull timeFunction: Software EngineeringExperience: 5+ yearsSkills: ["Communication","Cross-functional collaboration"]

Build and maintain a secure, high-performance browser extension for Chrome, Edge, and other major browsers using Manifest V3. Implement features that safely interact with web content and backend services, optimizing reliability across environments and user workflows. Collaborate with the endpoint agent and backend teams for tight integration, keep up with evolving browser APIs and security standards, and contribute through code reviews and testing.

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FursaFursa
Cyberhaven
Cyberhaven
7 months ago

Staff Software Engineer (Browser Extension)

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Canonical indexed version, validated from employer's careers page.

Source: Company careers pageValidated by: Fursa AI
Last checked: 5 hours agoStatus: Live

Job Summary

Build and maintain a secure, high-performance browser extension for Chrome, Edge, and other major browsers using Manifest V3. Implement features that safely interact with web content and backend services, optimizing reliability across environments and user workflows. Collaborate with the endpoint agent and backend teams for tight integration, keep up with evolving browser APIs and security standards, and contribute through code reviews and testing.
Location: United States, EU, Europe
Workplace: Remote
Employment Type: Full time
Job Function: Software Engineering
Seniority: Mid level

Key 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 in line with security best practices.
  • •Optimize performance and reliability across diverse environments and user workflows.
  • •Collaborate with the endpoint agent and backend teams to ensure tight integration and consistent functionality across endpoints and services.
  • •Stay current with evolving browser APIs, security standards, and extension ecosystem changes, and participate in code reviews and testing.

Key Requirements

  • •5+ years of software engineering experience, including at least 3 years focused on browser extension development.
  • •Strong proficiency in JavaScript/TypeScript and HTML/CSS, with modern web technology experience.
  • •Deep understanding of browser extension APIs (including Chrome Extensions and Manifest V3) and security implications of interacting with web content.
  • •Experience with secure coding practices and handling untrusted data.
  • •Ability to communicate clearly and work cross-functionally with product, design, and backend teams.
Experience:5+ years
Skills:CommunicationCross-functional collaboration
Tech Stack:JavaScriptTypeScriptHTMLCSSManifest V3Chrome ExtensionsGo

Company Brief

Cyberhaven
Cyberhaven provides AI-powered data security (Data Detection & Response) that traces data lineage to detect, prevent, and investigate data loss, insider risk, and AI-related data exposures across cloud, endpoints, and SaaS applications.
Industry: Cybersecurity
Company Size: Large (251 to 1,000 employees)
Growth: Scaleup
Valuation: Unicorn (USD 1B+)
Funding: Series D
Headquarters: Palo Alto, United States
Founded: 2016
Glassdoor
Glassdoor: 3.7
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