Sr. Software Engineer (Frontend) - Extensions Team

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Description

About the Role At Cerby, software engineers are at the heart of driving technology and product innovation. As a Senior Software Engineer on the Extension team, you will own and scale the browser extension at the core of Cerby's platform — the surface where users manage application passwords, autofill and inject credentials across the sites they use every day, and authenticate through passkeys and federated identity providers. The extension is a cross-browser Manifest V3 product shipping to Chrome, Edge, Firefox, and Safari, backed by service-worker-driven background synchronization, secure session lifecycle management. In this role you will own the quality, performance, and security of the extension end-to-end, help lead a security-first engineering culture, and sharpen a product experience that our users' most sensitive credential interactions depend on. Because the extension injects UI into pages we don't control and brokers our users' most sensitive data, security is not a phase of the work — it is the work. You are also expected to embrace AI as a core part of how we build, actively exploring and incorporating AI-assisted tools and practices into your daily development workflow to improve team efficiency and accelerate impact. Key Responsibilities Design and Develop: Build scalable, high-performance software solutions that align with business goals and user needs, leveraging AI-assisted tools and techniques as part of your engineering practice. Collaborate: Work

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