Senior Software Architect, Browser Extension Platform

keepersecurity; United States; Remote; USD 180,000 - 240,000; Full time

Benefits offered by this job

Medical, dental, vision

Life insurance

Disability insurance

401(k) with Roth

Generous PTO

Remote-first with optional hybrid

Job summary

Keeper Security is seeking a senior software architect to lead the technical architecture for our cross-browser extension platform (Chrome, Edge, Firefox, Safari). This role blends hands-on design with strategic direction to deliver secure, high-performance experiences aligned with zero-knowledge security.

You will collaborate with engineering, product, security, and UX teams to solve hard problems and guide long-term platform evolution, while mentoring engineers and steering architectural

Qualifications

• 10+ years of professional software engineering experience across databases, backend services, APIs, and UI.
• Proven 0-to-1 architecture experience delivering complex systems.

Responsibilities

• Define and drive the technical architecture and long-term roadmap for the browser extension platform.
• Lead architectural design for cross-browser features and shared services.
• Establish secure communication between extension components, web apps, and backend services.
• Guide decisions on extension lifecycle, content scripts, messaging, storage, and APIs.
• Ensure alignment with zero-knowledge/security principles and participate in threat modeling.

Skills

Software architecture

Distributed systems

Cloud-native

Security

JavaScript/TypeScript

Browser extension development

Performance engineering

Tools

AWS

Docker

Kubernetes

WebExtensions APIs

Job description

Role overview

This senior software architect position leads the technical architecture for a widely used browser extension platform, spanning Chrome, Edge, Firefox, Safari, and other browsers. The role combines hands-on architectural design with strategic direction, ensuring secure, high-performance, cross-platform experiences that align with a zero-knowledge security model. You will collaborate closely with engineering, product, security, and UX teams to solve complex challenges and guide long-term platform evolution.

Responsibilities

• Define and drive the technical architecture and long-term roadmap for the browser extension platform.
• Lead architectural design for complex browser-based features, shared services, and cross-platform capabilities using JavaScript, TypeScript, and modern web technologies.
• Establish secure communication patterns between extension components, web applications, backend services, and native integrations.
• Guide technical decisions on extension lifecycle, background services, content scripts, messaging, storage, and browser APIs.
• Ensure architectural alignment with zero-knowledge and zero-trust security principles, and collaborate on threat modeling and secure design.
• Mentor senior engineers, conduct architecture reviews, and raise engineering quality across the team.

Requirements

• 10+ years of professional software engineering experience with full-stack expertise across databases, backend services, APIs, infrastructure, and modern user interfaces.
• Proven 0-to-1 architecture experience designing and delivering complex software systems from concept through production.
• Deep understanding of software architecture, object-oriented design patterns, and performance engineering (profiling, load testing, bottleneck analysis).
• Strong knowledge of distributed systems, microservices, serverless architectures, event-driven design, and cloud-native technologies (AWS, Lambda, Docker, Kubernetes).
• Expertise in secure authentication, authorization, identity architectures (IAM, CIEM, least-privilege), and web application security.
• Extensive hands-on experience with browser extension development (Manifest V3, WebExtensions APIs, content scripts, background workers, storage, messaging) across multiple browsers.

Nice to have

• Background in cybersecurity, password management, secrets management, or endpoint security.
• Familiarity with enterprise product categories such as GRC, Integrated Risk Management, or specialized security platforms.
• Experience with high-scale SaaS, security-sensitive, or zero-trust application architectures.
• Knowledge of compliance frameworks (ISO 27001, SOC 2, GDPR) and accessibility standards (WCAG).
• Experience with product analytics, modern data platforms (Databricks), machine learning, AI-enabled products, or native application integration with browser platforms.

Benefits and work setup

• Comprehensive medical, dental, and vision coverage (including domestic partnerships).
• Employer-paid life insurance with supplemental options for spouse/child.
• Voluntary short/long-term disability insurance.
• 401(k) with Roth and traditional options.
• Generous PTO plan that recognizes tenure, including paid bereavement and jury duty.
• Remote-first position with optional hybrid schedule for candidates near Chicago, IL or El Dorado Hills, CA metro areas.
• Equal opportunity employer committed to diversity and inclusion.