Citadel Securities

UI Engineer- Global Trading Applications

Posted 3 Hours Ago

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New York NY USA

In-Office

175K-350K Annually

Mid level

Information Technology • Software • Financial Services • Quantitative Trading

We embrace bold ideas and seize opportunities others don’t from the way we operate to the strategies we deploy.

The Role

The UI Engineer will design and build complex user interfaces develop front-end architecture integrate with backend systems and optimize performance for trading applications.

Summary Generated by Built In

Job Description
Citadel Securities is building the next generation of trading and control platforms that power global markets. We are seeking a UI Engineer to join our Global Trading Applications team in New York.
This role will support one of two major firmwide initiatives: Control Center or CitSec OMS-platforms that strengthen internal control frameworks modernize trading workflows and consolidate complex systems into seamless high-performance user experiences.
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.
Responsibilities

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

Qualifications

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

Why Join Us

Build systems used directly by trading and control teams in global markets
Work on high-impact platforms that modernize and consolidate critical workflows
Collaborate with top-tier engineers and business stakeholders
Solve technically challenging problems in real-time high-performance environments

About Citadel Securities
Citadel Securities is a leading global market maker across a broad array of fixed income and equity securities. Our world-class capabilities position us to meet the liquidity demands of our diverse group of institutional clients in all market conditions. In partnering with us our clients-including asset managers banks broker-dealers hedge funds government agencies and public pension programs-are able to gain a powerful trading advantage and are better positioned to meet their investment goals.
The team makes its mark every day from our offices around the world: Chicago New York London Hong Kong Toronto Shanghai Sydney Dublin.
In accordance with applicable law the base salary range for this role is $175000 to $350000.
In addition the employee who fills this role will be eligible to participate in a discretionary incentive compensation program as well as a wide array of benefit programs such as medical and life insurance retirement and tax-free savings plans and access to other healthcare programs.
About Citadel Securities
Citadel Securities is a technology-driven next-generation global market maker. We provide institutional and retail investors with world-class liquidity competitive pricing and seamless front-to-back execution in a broad array of financial products. Our teams of engineers traders and researchers harness leading-edge quantitative research and the accelerating power of compute machine learning and AI to power our analytics and tackle the market's and our clients' most critical challenges. Together we are forging the future of capital markets. For more information visit citadelsecurities.com .

Top Skills

C++

Kdb+/Q

Python

React

Typescript

What the Team is Saying

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The Company

HQ: Miami FL

1900 Employees

Year Founded: 2002

What We Do

Citadel Securities is a technology-driven next-generation global market maker. We provide institutional and retail investors with world-class liquidity competitive pricing and seamless front-to-back execution in a broad array of financial products. Our teams of engineers traders and researchers harness leading-edge quantitative research and the accelerating power of compute machine learning and AI to power our analytics and tackle the market’s and our clients’ most critical challenges. Together we are forging the future of capital markets.

Why Work With Us

We do not accept the status quo and we are constantly looking to achieve what others think is impossible. That’s true not just in our careers but also in our communities.