Senior React Engineer

JUXT; Greater London; Hybrid; GBP 90,000 - 120,000; Full time

Job summary

JUXT is seeking a Senior React Engineer to join the Electronic Trading Technology team in London, operating on a hybrid model. The role focuses on building high-performance trading and market data applications used globally.

You will work on real-time, data-intensive front-office systems, using React, WebSockets and event-driven architectures, and collaborate with backend teams to ensure scalable, robust solutions.

Qualifications

• Experience building real-time, data-intensive applications.
• Experience with WebSockets, streaming data and event-driven architectures.
• Strong testing practices (Playwright, Cypress, Selenium etc.).
• Ability to work across the stack and collaborate closely with backend teams.
• Electronic Trading, Market Data or Low-Latency Systems.
• Solace, Kafka, Aeron or similar messaging technologies.
• AG Grid, Protobuf, FlatBuffers or SBE.

Responsibilities

• This role involves working on complex front-office systems where performance, scalability and user experience are critical.
• Collaborate closely with backend teams to ensure integrated, high-performance solutions.

Skills

React

WebSockets

Real-time data

Testing

Event-driven architectures

Low-latency systems

Tools

AG Grid

Protobuf/FlatBuffers/SBE

Job description

Senior React Engineer | Electronic Trading Technology | London Hybrid

We're hiring a Senior React Engineer to join a leading financial markets technology team building high-performance trading and market data applications used globally.

We're looking for engineers with:

• Experience building real-time, data-intensive applications
• Experience with WebSockets, streaming data and event-driven architectures
• Strong testing practices (Playwright, Cypress, Selenium etc.)
• Ability to work across the stack and collaborate closely with backend teams
• Electronic Trading, Market Data or Low-Latency Systems
• Solace, Kafka, Aeron or similar messaging technologies
• AG Grid, Protobuf, FlatBuffers or SBE

This is an opportunity to work on complex front-office systems where performance, scalability and user experience are critical.