Director, UI Engineering Lead - Equities Trading Technology

Jefferies•New York, NY

10d•$250,000 - $300,000

About The Position

Jefferies is seeking a hands-on UI Engineering Lead to shape and deliver the next generation of equities trading applications. The role combines frontend architecture, development, and technical leadership to create intuitive, high-performance trading workflows and a reusable UI platform supporting Equities Modernization. The role owns UI architecture and delivery for modern trading applications, including basket trading, order management, and real-time monitoring. It partners with traders, product owners, and backend engineers to turn complex workflows into intuitive user experiences, and builds shared components, interaction patterns, and application services to reduce duplication across teams. The position also designs responsive, data-intensive interfaces with real-time updates and establishes frontend standards for performance, testing, accessibility, security, and production observability. The lead remains hands-on with coding, design reviews, troubleshooting, and delivery of critical capabilities; mentors engineers and promotes consistent engineering practices across applications and regions; and incrementally modernizes legacy interfaces while maintaining business continuity. The primary location salary range is $250,000–$300,000. Jefferies is a global, full-service investment banking and capital markets firm with more than 40 offices worldwide.

Requirements

Extensive experience delivering production frontend applications, including ownership of architecture and technical delivery.
Deep expertise in TypeScript, JavaScript, React, HTML, and CSS, including component design and state management.
Proven experience building complex, real-time, data-intensive user interfaces.
Strong understanding of browser performance, rendering behavior, asynchronous processing, and frontend/backend integration.
Experience with streaming APIs, automated testing, CI/CD, and production diagnostics.
Ability to work directly with business stakeholders and turn ambiguous requirements into practical solutions.
Demonstrated technical leadership and a strong commitment to hands-on engineering.

Nice To Haves

Experience in equities, electronic trading, OMS/EMS, or other front-office platforms.
Familiarity with high-performance data grids, desktop interoperability, Deephaven, and multi-window trading workflows.
Experience building shared UI platforms or design systems adopted across multiple teams.
Familiarity with Java or C++ backend environments and AI-assisted development practices.

Responsibilities

Own UI architecture and delivery for modern trading applications, including basket trading, order management, and real-time monitoring.
Partner with traders, product owners, and backend engineers to translate complex workflows into intuitive user experiences.
Build reusable components, interaction patterns, and application services that reduce duplication across teams.
Design responsive, data-intensive interfaces with real-time updates, high-volume grids, and clear handling of connection and application state.
Establish frontend engineering standards for performance, automated testing, accessibility, security, and production observability.
Contribute hands-on through coding, design reviews, troubleshooting, and delivery of critical capabilities.
Mentor engineers and drive consistent engineering practices across applications and regions.
Modernize legacy interfaces incrementally while maintaining business continuity.