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# UI Engineer

- **Company:** Citadel LLC
- **Location:** New York, NY, United States
- **Salary:** $175,000.0 - $350,000.0
- **Contract:** Permanent contract
- **Skills:** Algorithmic Trading, C++ (Programming Language), Design of User Interfaces, Python (Programming Language), Performance Tuning, Systems Integration, TypeScript, ReactJS, Backend, Build Management, KDB+, Material UI, Real Time Data, Build Tools, Front End Software Development
- **Published:** June 9, 2026
- **Apply:** https://www.dice.com/job-detail/6edcf190-642e-44f0-8001-081c731a78a8

## About the Role

* Strong expertise in TypeScript and React
 * Expertise building and maintaining tooling for TypeScript projects (e.g., build systems, testing frameworks, developer workflows)
 * Experience building large-scale, production-grade front-end applications
 * Deep understanding of UI architecture, state management, and performance optimization
 * Experience integrating with distributed or real-time backend systems
 * Product-oriented mindset: able to work directly with business users, gather requirements, and deliver practical, scalable solutions
 * UX expertise: experience designing intuitive applications that distill complex, real-time data into clear, actionable user experiences, with a strong focus on user productivity
 * Ability to operate effectively in environments without dedicated UI design support
 * Strong communication skills and ability to work directly with business users
 * Experience in financial services, trading systems, or complex workflow platforms is a plus

## Description

You will work directly with traders, business control, surveillance, regulatory operations, and backend engineering teams to design and deliver scalable, real-time applications used across the firm., * Design and build complex, workflow-driven user interfaces using TypeScript and React

 * Develop scalable front-end architecture for large-scale trading and control systems
 * Integrate UI components with backend services written in C++, Python, and real-time data systems (e.g., KDB+/Q)
 * Translate sophisticated trading and compliance workflows into intuitive, high-performance user experiences
 * Drive performance optimization, maintainability, and architectural consistency across applications
 * Collaborate closely with cross-functional stakeholders to deliver business-critical enhancements


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