Senior Software Engineer - React/TypeScript

If you are unable to complete this application due to a disability, contact this employer to ask for an accommodation or an alternative application process. Senior Software Engineer - React/TypeScript Full Time – Remote – US About Flute Flute is a leading financial services provider specializing in innovative payment processing technology. Founded in 2005 and headquartered in Tempe, AZ, Flute supports more than 27,000 merchants and processes over $12 billion in annual payment volume across a wide range of service industries. At Flute, we pride ourselves on a culture of innovation, accountability, and partnership. We work closely with our customers to deliver tailored payment solutions that consolidate tools into a single, easy-to-use platform—helping businesses operate more efficiently, reduce friction, and grow with confidence. The Role We're seeking a Senior Software Engineer with deep expertise in React and TypeScript to join our engineering team. In this role, you'll be responsible for building intuitive, high-performance user interfaces for our payment platform that serve thousands of merchants, ISVs, and software platforms. You'll work on challenging front-end problems including embedded payment widgets, real-time transaction dashboards, merchant portals, and developer tools. This is an opportunity to build customer-facing applications that process billions of dollars in transactions while creating delightful experiences for businesses of all sizes. You'll work with modern technologies and have significant input on our front-end architecture and technical direction. What You'll Do Build and maintain sophisticated React applications that power our merchant and developer portals, and payment dashboards Develop reusable component libraries and design systems that scale across multiple products and platforms Create embedded payment widgets and SDKs that integrate seamlessly into third-party applications Build real-time dashboards that display transaction data, analytics, and business insights Design and implement RESTful API integrations to connect front-end applications with payment processing systems Develop Node.js/Express backend services to support front-end applications and provide API layers Ensure exceptional UX/UI with responsive, accessible, and performant interfaces Optimize application performance including bundle size, load times, and rendering Write clean, maintainable TypeScript code with proper typing and comprehensive test coverage Collaborate with designers to translate mockups and prototypes into production-ready features Work with backend engineers to define API contracts and ensure seamless integration Implement payment security best practices including PCI compliance requirements Participate in code reviews and mentor junior engineers on React and TypeScript best practices Contribute to technical architecture decisions for front-end infrastructure and tooling What We're Looking For Required Qualifications 5+ years of professional software development experience with a focus on front-end ES6+ features Deep experience with React including hooks, context, state management, and component lifecycle Strong command of HTML5 and CSS3 including responsive design, flexbox, grid, and modern CSS patterns Proven experience building and consuming RESTful APIs with proper error handling and async patterns Solid experience with Express.js or similar Node.js frameworks for building backend services and APIs Understanding of payment processing workflows and fintech domain knowledge (preferred but not required) Experience with modern build tools (Webpack, Vite, or similar) and package Strong knowledge of testing frameworks (Jest, React Testing Library, Cypress, Playwright) Familiarity with version control (Git) and CI/CD pipelines Experience with responsive and mobile-first design principles Understanding of web security best practices XSS, CSRF protection, and Excellent problem-solving skills and attention to detail Strong communication and collaboration skills with the ability to work effectively in cross-functional teams Nice to Have Experience building embedded widgets or SDKs for third-party integration Knowledge of payment industry standards and PCI-DSS compliance requirements Experience with state management libraries (Redux, Zustand, Recoil, or similar) Experience with React Native for mobile development Experience with design systems and component libraries (Material-UI, Chakra UI, Tailwind CSS) Familiarity with cloud platforms (GCP, AWS, Azure) and serverless architectures Knowledge of OAuth 2.0, JWT, and authentication flows J-18808-Ljbffr