Senior Staff Engineer

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    "datePosted": "2024-06-06T08:38:13.783Z",
    "description": "<h2>Overview</h2>\n<h3>Connecting clients to markets – and talent to opportunity</h3>\n<p>With 4,300 employees and over 400,000 retail and institutional clients across more than 80 offices on five continents, StoneX is a Fortune-100, Nasdaq-listed provider connecting clients to the global markets. We focus on innovation, human connection, and delivering world-class products and services to investors worldwide.</p>\n<p>At StoneX, you’ll join an institutional-grade financial services organization building modern, high-performance digital platforms. Our teams combine cutting-edge technology, deep domain expertise, and strong engineering culture to deliver scalable and reliable trading experiences.</p>\n<h2>Responsibilities</h2>\n<h2>Position Purpose</h2>\n<p>We are seeking a <strong>Senior React UI Developer</strong> to design and build our next-generation <strong>web trading platforms</strong>. This role focuses on <strong>frontend architecture, performance optimization, and scalable UI development</strong>, working closely with backend, mobile, and platform teams.</p>\n<p>You will play a key role in shaping UI standards, reusable component systems, and frontend best practices for highly interactive, real-time trading applications.</p>\n<h2>Primary Responsibilities</h2>\n<h3>Frontend Architecture & Development</h3>\n<ul>\n <li><strong>Web Trading Platforms</strong>\n  <ul>\n   <li>Design and develop responsive, high-performance web trading applications using <strong>React and TypeScript</strong></li>\n   <li>Ensure consistent user experiences across browsers and devices</li>\n  </ul></li>\n <li><strong>Component & Design System Development</strong>\n  <ul>\n   <li>Build and maintain reusable UI components and composite components</li>\n   <li>Enforce consistent usage of design tokens and UI primitives</li>\n   <li>Promote best practices for component composition, accessibility, and maintainability</li>\n  </ul></li>\n <li><strong>State Management & Routing</strong>\n  <ul>\n   <li>Design scalable client-side state management strategies</li>\n   <li>Implement robust routing architectures for complex, multi-domain applications</li>\n  </ul></li>\n</ul>\n<h3>Performance & Reliability</h3>\n<ul>\n <li><strong>Performance Optimization</strong>\n  <ul>\n   <li>Implement lazy loading, code splitting, and bundle optimization strategies</li>\n   <li>Optimize rendering performance for real-time and data-heavy UIs</li>\n  </ul></li>\n <li><strong>Error Handling & Observability</strong>\n  <ul>\n   <li>Implement error boundaries, logging, and monitoring for frontend applications</li>\n   <li>Improve resiliency and debuggability of UI systems</li>\n  </ul></li>\n</ul>\n<h3>Security & Integration</h3>\n<ul>\n <li><strong>Authentication Integration</strong>\n  <ul>\n   <li>Integrate frontend applications with <strong>IDP-based authentication systems</strong></li>\n   <li>Ensure secure handling of sessions, tokens, and user identity flows</li>\n  </ul></li>\n <li><strong>API Integration</strong>\n  <ul>\n   <li>Consume RESTful APIs and event-driven data streams efficiently</li>\n   <li>Collaborate with backend teams to define frontend-friendly API contracts</li>\n  </ul></li>\n</ul>\n<h3>Collaboration & Leadership</h3>\n<ul>\n <li><strong>Cross-Functional Collaboration</strong>\n  <ul>\n   <li>Work closely with product managers, designers, backend engineers, and QA teams</li>\n   <li>Translate business and UX requirements into scalable frontend solutions</li>\n  </ul></li>\n <li><strong>Technical Leadership</strong>\n  <ul>\n   <li>Mentor junior and mid-level developers</li>\n   <li>Drive frontend best practices, architectural consistency, and code quality</li>\n  </ul></li>\n <li><strong>Stakeholder Communication</strong>\n  <ul>\n   <li>Clearly communicate technical decisions, trade-offs, and implementation approaches</li>\n  </ul></li>\n</ul>\n<p> </p>\n<h2>Qualifications</h2>\n<h2>Required Qualifications</h2>\n<p>To succeed in this role, you will need:</p>\n<ul>\n <li><strong>5+ years of professional frontend development experience</strong></li>\n <li>Expert knowledge of <strong>JavaScript and TypeScript</strong> (ES6+, async programming, closures, types)</li>\n <li>Strong experience with <strong>React</strong>, including:\n  <ul>\n   <li>Hooks and component patterns</li>\n   <li>Lazy loading and code splitting</li>\n   <li>Error boundaries and error capturing</li>\n   <li>State management libraries</li>\n   <li>Routing architectures</li>\n  </ul></li>\n <li>Strong understanding of <strong>frontend performance optimization techniques</strong></li>\n <li>Experience integrating with <strong>authentication and authorization systems</strong></li>\n <li>Solid understanding of RESTful APIs and frontend-backend integration</li>\n</ul>\n<h2>What Will Make You Stand Out</h2>\n<ul>\n <li>Experience building <strong>trading, financial, or real-time data platforms</strong></li>\n <li>Familiarity with <strong>React Native</strong> or shared web/mobile UI strategies</li>\n <li>Experience working within large-scale design systems</li>\n <li>Understanding of CI/CD pipelines and frontend build tooling</li>\n <li>Experience working in regulated or security-sensitive environments</li>\n</ul>\n<h2>Education</h2>\n<ul>\n <li>Bachelor’s or Master’s degree in Computer Science, Engineering, or a related field (or equivalent practical experience)</li>\n</ul>\n<h2>Working Environment</h2>\n<ul>\n <li><strong>Hybrid</strong></li>\n</ul>",
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