Senior Software Engineer (Browser Extension)

Cyberhaven
United States, EU
Workplace: RemoteFull timeFunction: Software EngineeringSkills: ["Communication","Self-sufficiency"]

Build and evolve a secure, high-performance browser extension for Chrome, Edge, and other major browsers using Manifest V3. You’ll design extension components that safely interact with web content and Cyberhaven backend services, optimize reliability across diverse environments, and stay current with evolving browser APIs and security standards. Work closely with the endpoint agent and backend teams to deliver tight, consistent functionality across platforms.

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FursaFursa
Cyberhaven
Cyberhaven
1 day ago

Senior 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: 9 hours agoStatus: Live

Job Summary

Build and evolve a secure, high-performance browser extension for Chrome, Edge, and other major browsers using Manifest V3. You’ll design extension components that safely interact with web content and Cyberhaven backend services, optimize reliability across diverse environments, and stay current with evolving browser APIs and security standards. Work closely with the endpoint agent and backend teams to deliver tight, consistent functionality across platforms.
Location: United States, EU
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 major browsers using Manifest V3 and modern APIs.
  • •Implement secure interactions between web content and backend services while following security best practices.
  • •Optimize performance and reliability across diverse environments and user workflows.
  • •Partner with the endpoint agent and backend teams to ensure tight integration and consistent functionality across endpoints and services.
  • •Contribute to code reviews, testing, and continuous improvement of development processes.

Key Requirements

  • •Extensive software engineering experience across coding, testing, debugging, and automating complex TypeScript/JavaScript applications.
  • •Ability to work with third-party web applications, including inspecting network traffic, DOM structure, and client-side code to understand page behavior.
  • •Comfort focusing on correctness, performance, and reliability of background processes.
  • •Strong communication skills and the ability to work self-sufficiently with minimal direction.
  • •Experience coordinating work with developers on non-browser platforms to ensure integrated functionality.
Skills:CommunicationSelf-sufficiency
Tech Stack:TypeScriptJavaScriptChromeEdgeFirefoxManifest V3DOMContent scriptsBackground scriptsExtension messagingNetwork traffic

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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