Senior Frontend Software Engineer - Global Commercial Services Technology

Role Overview

Senior Frontend Software Engineer for American Express’ Global Commercial Services (GCS). You will help build a next-generation expense management platform for Small and Medium-sized (SMS) businesses and corporate customers, delivering intuitive, scalable, high-performing digital experiences.

Responsibilities

• Lead design, development, and deployment of modern web applications using React and TypeScript.
• Collaborate with product managers, designers, and stakeholders to shape requirements and user experiences.
• Build scalable, responsive, accessible frontend architectures and component libraries.
• Create data-driven UI experiences, dashboards, and dynamic forms using JSON-schema (or similar) approaches.
• Partner with backend engineers to integrate APIs for seamless end-to-end functionality.
• Mentor engineers and help foster a collaborative culture across teams/engineering guilds.
• Add analytics, instrumentation, and observability to frontend applications.
• Optimize frontend performance, scalability, and reliability across browsers and devices.
• Participate in architecture discussions, RFCs, and proof-of-concept initiatives.
• Establish and maintain coding standards, testing practices, and design conventions.
• Plan/estimate/execute deliverables; identify risks and remove blockers.
• Communicate progress and milestones; incorporate feedback into iterative improvements.

Requirements

• 5+ years of software engineering experience with strong frontend focus.
• Experience collaborating with product management and UX/design teams.
• Strong design sensibilities and a drive to deliver pixel-perfect UI.
• Excellent communication, leadership, and mentoring skills.
• Expert proficiency in React and TypeScript.

Tech Stack (As Used in the Role)

• Web: Next.js (App Router, RSC), React 19
• Mobile: React Native (Expo), React 19
• Monorepo: Turborepo
• Data/State: TanStack Query (React Query), Zustand, tRPC
• UI/Design System: Tailwind CSS, class-variance-authority, internal component library
• Animation: Framer Motion, react-reanimated
• Observability & Analytics: Datadog RUM/APM, Amplitude, FullStory
• Testing: Vitest (unit/integration), plus component/visual/E2E approaches
• CI/CD: GitHub Actions

Location / Eligibility

• Location: Sunrise, FL.
• Employment eligibility to work in the United States is required; the company will not pursue visa sponsorship.