About the role

Role Overview

Senior Frontend Software Engineer for American Express Global Commercial Services. You will help build a next-generation expense management platform delivering intuitive, scalable, and high-performing digital experiences for small/medium businesses and corporate customers.

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 UIs such as dashboards and dynamic forms using JSON-schema (or similar approaches).
Partner with backend engineers to integrate APIs for end-to-end functionality.
Mentor engineers and help cultivate collaboration across teams.
Integrate analytics, instrumentation, and observability in frontend apps.
Optimize performance, scalability, and reliability across browsers and devices.
Participate in architecture discussions, RFCs, and proof-of-concepts.
Establish and maintain coding standards, testing practices, and design conventions.
Plan, estimate, execute deliverables; identify risks and remove blockers.
Communicate progress/milestones and iterate based on feedback.

Requirements

5+ years of software engineering experience with a strong focus on frontend development.
Experience partnering with product management and UX/design teams.
Strong design sensibilities; aim for pixel-perfect UI.
Strong communication, leadership, and mentoring skills.
Expert proficiency in React and TypeScript.
Hands-on experience building modern applications:
- 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; Framer Motion, react-reanimated
- Observability/analytics: Datadog RUM & APM, Amplitude, FullStory
- Testing: Vitest (unit/integration) and familiarity with component/visual/e2e testing
- CI/CD: GitHub Actions

Location & Eligibility

Based in New York, NY.
US employment eligibility required; no visa sponsorship.

About American Express

American Express (Amex) is a global financial services company that provides payment, membership, and financial management solutions for individuals and businesses. Its Global Commercial Services (GCS) team supports business customers with tools for payments, cash flow, and working capital, including digital expense management experiences.

Senior Frontend Software Engineer - Global Commercial Services Technology

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