Job Description

About the Role
Title:
Senior Staff Engineer
Location:
Pune IND
Category (Portal Searching): Information Technology
Position Type (Portal Searching): Experienced Professional
Job Description:
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