Senior Front End Developer

Job Description Job Purpose Intercontinental Exchange (ICE) is seeking a Senior Front-End Web Developer responsible for building and supporting shared libraries and frameworks as well as single-page applications (SPA) . These large-scale applications integrate with disparate systems using RESTful web services, JavaScript APIs, and other back-end systems. The ideal candidate will have deep expertise in JavaScript, CSS, and HTML, along with modern frameworks and tools such as React, Redux, and TypeScript. A strong understanding of functional programming principles is essential. Passion, discretion, analytical thinking, and independent judgment are key to success in this role. Responsibilities Contribute to the design and development of company-wide web applications and libraries. Lead efforts to design, architect, and implement new software components. Independently manage project activities related to builds and deployments. Create and maintain software tests to ensure functionality and quality. Develop design documentation for new software and subsequent versions. Identify opportunities to improve and optimize applications. Collaborate with business analysts or product managers to understand new requirements. Support and mentor developers on JavaScript/web concepts. Adhere to team guidelines for quality and consistency. Follow company software development processes and standards. ⠀Knowledge and Experience Bachelor’s degree in computer science; graduate degree preferred. 5+ years of advanced JavaScript and functional programming experience. 3+ years of advanced CSS experience. 2+ years of HTML5 techniques. Experience with iterative/test-driven development, code refactoring, and continuous integration. Experience with at least one JavaScript framework (e.g., React, Vue.js, Angular). Experience with client-side testing tools (e.g., React-Testing-Library, Jest, Enzyme). Familiarity with unit/e2e/accessibility testing and debugging workflows Experience with server-side technologies such as Node.js. Strong understanding of browser quirks and cross-browser optimization. Passion for learning new technologies and adapting to fast-paced environments. ⠀Preferred Skills React Redux TypeScript Modern JavaScript language features (ES6+) CSS-in-JS (e.g., Emotion), Tailwind, LESS, or SASS RESTful design concepts and JSON-pure APIs Webpack / Vitejs (or similar) Babel.js Node.js (npm) Git SDLC processes Electron Knowledge of RAG / MCP / LLM technologies Familiarity with AI-assisted development tools and processes (e.g. CoPilot, Cursor)