Senior UI Engineer - Real-Time Trading Platforms

Citadel Securities; New York, Northern (NY, KY); Hybrid; USD 210,000 - 350,000; Full time

Job summary

Citadel Securities in New York seeks a versatile UI Engineer to join the CES Client Platforms team. You will craft high-performance, real-time UI experiences and collaborate with product, quantitative researchers, and backend engineers to deliver scalable client-facing platforms.

You will also dive into backend services when needed, contributing to UI frameworks and developer tooling while maintaining strong UX across asset classes.

Qualifications

• Proficiency in TypeScript and React with strong web development foundation.
• Experience building front-end applications at scale with real-time data.
• Willingness to work across the full stack and collaborate with product and backend teams.

Responsibilities

• Design and build sophisticated, workflow-driven user interfaces primarily using TypeScript and React.
• Dive into backend services (C++, Python) and data pipelines to troubleshoot, optimize, or build end-to-end features.
• Integrate UI components with distributed backend systems and real-time data services.
• Drive front-end engineering best practices, performance, maintainability, and architectural consistency.

Skills

TypeScript

React

Frontend development

Distributed systems understanding

Performance optimization

UI architecture

State management

Cross-functional collaboration

Tools

C++

Python

Job description

Citadel Securities in New York seeks a versatile UI Engineer to join the CES Client Platforms team. You will craft high-performance, real-time UI experiences and collaborate with product, quantitative researchers, and backend engineers to deliver scalable client-facing platforms.

You will also dive into backend services when needed, contributing to UI frameworks and developer tooling while maintaining strong UX across asset classes.