Senior Front End Developer

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)