StoneX

Senior Staff Engineer

Job Locations IN-Pune
Requisition ID 2026-14607
Category (Portal Searching)
Information Technology
Position Type (Portal Searching)
Experienced Professional

Overview

Connecting clients to markets – and talent to opportunity

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.

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.

Responsibilities

Position Purpose

We are seeking a Senior React UI Developer to design and build our next-generation web trading platforms. This role focuses on frontend architecture, performance optimization, and scalable UI development, working closely with backend, mobile, and platform teams.

You will play a key role in shaping UI standards, reusable component systems, and frontend best practices for highly interactive, real-time trading applications.


Primary Responsibilities

Frontend Architecture & Development

  • Web Trading Platforms
    • Design and develop responsive, high-performance web trading applications using React and TypeScript
    • Ensure consistent user experiences across browsers and devices
  • Component & Design System Development
    • Build and maintain reusable UI components and composite components
    • Enforce consistent usage of design tokens and UI primitives
    • Promote best practices for component composition, accessibility, and maintainability
  • State Management & Routing
    • Design scalable client-side state management strategies
    • Implement robust routing architectures for complex, multi-domain applications

Performance & Reliability

  • Performance Optimization
    • Implement lazy loading, code splitting, and bundle optimization strategies
    • Optimize rendering performance for real-time and data-heavy UIs
  • Error Handling & Observability
    • Implement error boundaries, logging, and monitoring for frontend applications
    • Improve resiliency and debuggability of UI systems

Security & Integration

  • Authentication Integration
    • Integrate frontend applications with IDP-based authentication systems
    • Ensure secure handling of sessions, tokens, and user identity flows
  • API Integration
    • Consume RESTful APIs and event-driven data streams efficiently
    • Collaborate with backend teams to define frontend-friendly API contracts

Collaboration & Leadership

  • Cross-Functional Collaboration
    • Work closely with product managers, designers, backend engineers, and QA teams
    • Translate business and UX requirements into scalable frontend solutions
  • Technical Leadership
    • Mentor junior and mid-level developers
    • Drive frontend best practices, architectural consistency, and code quality
  • Stakeholder Communication
    • Clearly communicate technical decisions, trade-offs, and implementation approaches

 

Qualifications

Required Qualifications

To succeed in this role, you will need:

  • 5+ years of professional frontend development experience
  • Expert knowledge of JavaScript and TypeScript (ES6+, async programming, closures, types)
  • Strong experience with React, including:
    • Hooks and component patterns
    • Lazy loading and code splitting
    • Error boundaries and error capturing
    • State management libraries
    • Routing architectures
  • Strong understanding of frontend performance optimization techniques
  • Experience integrating with authentication and authorization systems
  • Solid understanding of RESTful APIs and frontend-backend integration

What Will Make You Stand Out

  • Experience building trading, financial, or real-time data platforms
  • Familiarity with React Native or shared web/mobile UI strategies
  • Experience working within large-scale design systems
  • Understanding of CI/CD pipelines and frontend build tooling
  • Experience working in regulated or security-sensitive environments

Education

  • Bachelor’s or Master’s degree in Computer Science, Engineering, or a related field (or equivalent practical experience)

Working Environment

  • Hybrid

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