Senior Lead React UI Engineer — Trader Risk UI

Testing Site - JPMC; Greater London; On-site; GBP 90,000 - 130,000; Full time

Job summary

JPMorgan Chase is seeking a Senior Lead Software Engineer to drive the development of trader-facing risk UI in a React/TypeScript stack. You will mentor teammates, guide best practices, and push for robust, secure software across multiple technologies.

You will lead design reviews and engage with external vendors to assess architectural alignment, while improving automation, delivery, and resilience across the platform.

Qualifications

• Formal training or certification in software engineering, with advanced proficiency in React.
• Strong experience with automation and continuous delivery (CI/CD).
• Comprehensive understanding of the Software Development Life Cycle.
• Advanced knowledge of agile practices, including CI/CD, resiliency, and security.
• Experience with cloud, AI/ML, or mobile technologies.
• Hands-on experience building complex web apps using React and Typescript.
• Familiarity with modern web build tools (webpack, CRA, Vite).
• Proven ability to develop secure, high-quality production TypeScript code.
• Commitment to test-driven development with Jest, Cypress, and testing-library/react.
• Experience with Python 3 or higher.

Responsibilities

• Design, develop, and troubleshoot innovative software solutions for market-facing users.
• Write secure, high-quality production code in React and TypeScript; review code and debug.
• Identify opportunities to automate recurring issues to improve stability.
• Lead technical evaluation sessions with vendors and internal teams for integration.
• Champion communities of practice and adoption of new technologies.

Skills

React

Typescript

CI/CD

Agile practices

SDLC

Code reviews

Performance testing

Python 3

Cloud / AI / ML exposure

Web performance optimization

Education

Formal training or certification in software engineering

Tools

webpack

Create React App

Vite

Jest

Cypress

@testing-library/react

Job description

JPMorgan Chase is seeking a Senior Lead Software Engineer to drive the development of trader-facing risk UI in a React/TypeScript stack. You will mentor teammates, guide best practices, and push for robust, secure software across multiple technologies.

You will lead design reviews and engage with external vendors to assess architectural alignment, while improving automation, delivery, and resilience across the platform.