Senior Frontend Software Engineer - Global Commercial Services Technology
Global Commercial Services (GCS) serves millions of business customers around the world, from mom-and-pop shops to Fortune 500 companies. We back businesses so they can do more business, with a mission to be the undisputed leader in financial and membership services - responsibly driving double-digit revenue growth. We do that by offering a diverse range of payment and cashflow tools, from a wide range of traditional card products, to working capital and supply chain financing, to new digital solutions that make it easy for our customers to manage a full range of their financial and payment needs.
The Global Commercial Services team at American Express is seeking a Senior Software Engineer I with strong expertise in frontend development and user-centric product engineering. This role will play a key part in building a next-generation expense management platform that delivers intuitive, scalable, and high-performing digital experiences for Small and Medium-sized (SMS) businesses and Corporate customers.
Lead the design, development, and deployment of modern web applications using React and TypeScript.
Collaborate closely with product managers, designers, and stakeholders to shape product requirements and user experiences.
Build scalable, responsive, and accessible frontend architectures and component libraries.
Develop data-driven UI experiences, dashboards, and dynamic forms using JSON-schema or similar approaches.
Partner with backend engineers to integrate APIs and deliver seamless end-to-end functionality.
Mentor engineers and contribute to a strong culture of collaboration across teams and engineering guilds.
Integrate analytics, instrumentation, and observability into frontend applications.
Optimize 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, and execute on deliverables while proactively identifying risks and resolving blockers.
Communicate progress and demonstrate milestones to stakeholders, incorporating feedback into iterative improvements.
Qualifications
5+ years of experience in software engineering with a strong focus on frontend development.
Experience collaborating closely with product management and UX design teams.
Strong design sensibilities and a desire to build pixel perfect UI.
Strong communication, leadership, and mentoring skills.
Expert proficiency in React and Typescript.
Strong hands-on experience building modern web applications:
Web: Next.js (App Router, RSC), React 19.
Mobile: React Native (Expo), React 19.
Monorepo: Turborepo
Data & state: TanStack Query (React Query) for server state, Zustand for client state, and tRPC for type-safe client-server contracts.
UI & design system: Tailwind CSS, class-variance-authority, and an internal component library; Framer Motion and react-reanimated for animation.
Observability & analytics: Datadog RUM and APM, Amplitude, FullStory.
Testing: Vitest for unit and integration tests; familiarity with component, visual, and end-to-end testing approaches.
CI/CD: Github Actions
Employment eligibility to work with American Express in the United States is required as the company will not pursue visa sponsorship for this position.
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