Senior Software Architect, Browser Extension Platform

Keeper Security is hiring a Senior Software Architect to provide technical leadership for our Browser Extension team and help shape the architecture of one of Keeper's most widely used client experiences. This is a 100% remote position, with an opportunity to work a hybrid schedule for candidates based in the Chicago, IL or El Dorado Hills, CA metro areas. As a Senior Software Architect for Keeper's Browser Extension team, you will define and guide the architecture of secure browser-based experiences across Chrome, Edge, Firefox, Safari and other supported platforms. Responsibilities: - Define and drive the technical architecture and long-term direction of Keeper's browser extension platform - Lead architectural design for complex browser-based features, shared services and cross-platform capabilities - Design scalable solutions using JavaScript, TypeScript and modern web application technologies - Guide architecture across Chrome, Edge, Firefox, Safari and other supported browser environments - Establish patterns for secure communication between browser extension components, web applications, backend services and native integrations - Lead technical decisions involving extension lifecycle, background services, content scripts, messaging, storage and browser APIs - Ensure architectural decisions align with Keeper's zero-knowledge and zero-trust security principles - Identify and address performance, memory, reliability and scalability challenges across browser environments - Collaborate with Security teams on threat modeling, secure design and remediation of security-sensitive browser functionality - Use AI-assisted development tools such as Claude, ChatGPT, GitHub Copilot or similar platforms to improve architecture research, prototyping, debugging, code analysis, documentation and engineering efficiency Requirements: - 10+ years of professional software engineering experience with true full-stack development expertise spanning databases, backend services, APIs, infrastructure and modern user interfaces - Demonstrated 0-to-1 architecture experience designing and delivering complex software systems from initial concept through production - Strong knowledge of software architecture and object-oriented design patterns, including common Gang of Four design patterns - Deep understanding of performance engineering, including profiling, load testing, bottleneck analysis and real-time debugging across the full application stack - Strong understanding of distributed systems, microservices, serverless architectures and event-driven application design - Experience with cloud-native technologies and platforms, including AWS, Lambda, Docker and Kubernetes - Experience designing secure authentication, authorization and identity architectures, including IAM, CIEM and least-privilege access concepts - Strong knowledge of web and application security concepts, including CORS, OWASP guidance and secure software development practices