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.
MonorepoTurborepo
Data & stateTanStack 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
TestingVitest 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.
At American Express, our culture is built on a 175-year history of innovation, shared values and Leadership Behaviors, and an unwavering commitment to back our customers, communities, and colleagues. From delivering differentiated products to providing world-class customer service, we operate with a strong risk mindset, ensuring we continue to uphold our brand promise of trust, security, and service.
As part of Team Amex, you’ll experience our powerful backing with comprehensive support for your holistic well-being and many opportunities to learn new skills, develop as a leader, and grow your career. Here, your voice and ideas matter, your work makes an impact, and together, you will help us define the future of American Express.
At American Express, we know that with the right backing, people and businesses have the power to progress in incredible ways. Whether we’re supporting our customers’ financial confidence to move ahead, taking commerce to new heights, or encouraging people to explore the world, our colleagues are constantly striving to uphold our powerful backing promise to our customers and each other every day.
These beliefs have been our North Star for 170 years as our business transformed – from helping evacuate travelers during World Wars, to ensuring the safety of our customers’ funds during the Great Depression in the U.S., to creating the Shop Small® movement to help small businesses recover from the Financial Crisis, to providing aid to communities impacted by many natural disasters and so much more.
For generations, the key to our success has been the determination and resilience of our American Express colleagues. Now, as a globally integrated payments company, we work together to provide customers with access to products, insights and world-class experiences that enrich lives and build business success. Join us and let’s lead the way together.
Learn more about us at:
https://www.americanexpress.com/careers
https://www.americanexpress.com/
https://www.facebook.com/AmericanExpressUS
https://www.instagram.com/americanexpress/
https://twitter.com/americanexpress
https://www.youtube.com/user/AmericanExpress
See our community guidelines at:
https://www.americanexpress.com/en-us/company/community-guidelines/
If you have a customer service issue or question, please visit www.americanexpress.com/contactus
