Full Stack Software Engineer Jobs in Tallahassee, FL

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.
Responsibilities

• 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
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.
About Us
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.
About the Team
We back you with benefits that support your holistic well-being so you can be and deliver your best. This means caring for you and your loved ones' physical, financial, and mental health, as well as providing the flexibility you need to thrive personally and professionally:

• Competitive base salaries
• Bonus incentives
• 6% Company Match on retirement savings plan
• Free financial coaching and financial well-being support
• Comprehensive medical, dental, vision, life insurance, and disability benefits
• Flexible working model with hybrid, onsite or virtual arrangements depending on role and business need
• 20+ weeks paid parental leave for all parents, regardless of gender, offered for pregnancy, adoption or surrogacy
• Free access to global on-site wellness centers staffed with nurses and doctors (depending on location)
• Free and confidential counseling support through our Healthy Minds program
• Career development and training opportunities

For a full list of Team Amex benefits, visit our Colleague Benefits Site.
American Express is an equal opportunity employer and makes employment decisions without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, veteran status, disability status, age, or any other status protected by law. American Express will consider for employment all qualified applicants, including those with arrest or conviction records, in accordance with the requirements of applicable state and local laws, including the California Fair Chance Act, the Los Angeles County Fair Chance Ordinance for Employers, and the City of Los Angeles' Fair Chance Initiative for Hiring Ordinance. For positions covered by federal and/or state banking regulations, American Express will comply with such regulations as it relates to the consideration of applicants with criminal convictions.
We back our colleagues with the support they need to thrive, professionally and personally. That's why we have Amex Flex, our enterprise working model that provides greater flexibility to colleagues while ensuring we preserve the important aspects of our unique in-person culture. Depending on role and business needs, colleagues will either work onsite, in a hybrid model (combination of in-office and virtual days) or fully virtually.
US Job Seekers - Click to view the "Know Your Rights" poster. If the link does not work, you may access the poster by copying and pasting the following URL in a new browser window: https://www.eeoc.gov/poster.
The below represents the expected salary range for this job requisition. Ultimately, in determining your pay, we'll consider your location, experience, and other job-related factors.