Senior Software Engineer - Frontend (Attack & User Emulation)

About the role

The Senior Frontend Software Engineer on the Attack & User Emulation team builds the primary control surfaces and dynamic visual interfaces that let users configure, simulate, and analyze cyber attacks and realistic user personas. This role bridges complex backend simulation capabilities and real‑time telemetry into high‑quality, intuitive human‑in‑the‑loop web applications.

Key responsibilities

• Design, build, and maintain high‑performance web applications using React and TypeScript.
• Lead end‑to‑end technical execution for frontend features, including real‑time streaming displays (WebSockets, SSE) and AI/MCP integrations.
• Improve client‑side performance, code reusability, testing coverage, and WCAG accessibility standards.
• Solve complex frontend challenges around visualizing large datasets, interactive network topology, and agentic workflows.
• Collaborate with UX Designers on feasibility and partner with backend engineers to define API contracts.
• Conduct thorough code reviews, champion engineering standards, and mentor team members.

Required profile

• 6+ years of professional experience building and shipping complex, scalable web applications.
• Deep expertise in React, TypeScript, modern state management, and web performance optimization.
• Experience integrating real‑time data streams (WebSockets, SSE) and complex backend/AI protocols.
• Strong foundation in UI testing strategies (unit, integration, E2E) and accessibility (WCAG) standards.
• Proven ability to evaluate technical trade‑offs between UX polish, performance, and delivery speed.

Required skills

• React
• TypeScript
• WebSockets
• Server‑Sent Events (SSE)
• Docker
• Kubernetes
• Git / GitHub
• Storybook
• Figma
• UI testing (unit, integration, E2E)
• WCAG accessibility
• Real‑time data streaming
• AI agent communication (Model Context Protocol)