Frontend Engineer; React Native

Position: Frontend Engineer (React Native)
Location: Greater London

## Frontend Engineer (React Native)
Apply locations:
Cannon Street, London time type:
Full time posted on:
Posted Yesterday time left to apply:
End Date:
June 21, 2026 (16 days left to apply) job requisition :
R 17223
** Job Title
** Frontend Engineer (React Native)
** Job Description**## So, who are we?
* IG has been at the centre of retail trading and investment since 1974, when we helped create the market for financial spread betting. Today, we're a FTSE
100 fintech operating across five continents, serving over 700,000 clients and handling billions in transactions - built on decades of scale, trust and proof. We didn't pivot to innovation; it's how we've always operated. What that means for the people who work here is real: genuinely complex problems to solve, the technology and resources to tackle them properly, and the kind of scope that’s rare in established businesses.

The bar is high - bring a curious and forward-thinking mindset and we'll give you the platform to define what comes next. Join us at IG – the future
** gets
* * built here.*## ## Your team

We are IG UK's Crypto product engineering team, having successfully delivered the company's #1 strategic priority - a fully licensed, FCA-regulated crypto trading platform launched in December 2025. We maintain elite engineering standards through cloud-native AWS architecture, comprehensive observability, and a culture of end-to-end ownership where engineers drive product outcomes, not just technical deliverables.##

Your role in the Team’s Success Your primary responsibility will be to lead the development of complex React Native features for our award-winning trading platforms across mobile and web.

You'll architect scalable solutions that handle real-time financial data streams and high-frequency trading operations on any device.

You'll work as a hands-on practitioner who leads by example while mentoring others in the team.

You'll leverage AI-assisted development tools as a core part of your workflow — we expect engineers to actively embrace AI to multiply their impact.
Think and act like an owner – your code directly enables traders to seize market opportunities.## ## What you'll do
* Lead the development of complex React Native features for our award-winning trading platforms across mobile and web, ensuring optimal performance and user experience
* Architect scalable cross-platform solutions that handle real-time financial data streams and high-frequency trading operations
* Collaborate with cross-functional teams including backend engineers, designers, and product managers to deliver features that drive business growth and champion the client
* Actively participate in product development, from requirements discussions to seeing customers using your software in production
* Mentor junior developers and contribute to technical decision-making that shapes our mobile and web development standards – raising the bar across the team
* Drive cross-platform innovation, implementing cutting-edge technologies to stay ahead in the competitive fintech landscape
* Own end-to-end delivery of features – from technical design through deployment – taking accountability for performance, reliability, and user experience across all platforms
* Leverage AI-assisted development tools to accelerate delivery, improve code quality, and stay at the cutting edge of modern engineering practices
* Think big about our frontend architecture – challenge the status quo, propose improvements, and help shape the technical direction of our mobile and web platforms## ## What you'll need for the role
* Extensive experience of React Native development with a proven track record of delivering production mobile and/or web applications
* Strong expertise in JavaScript/Type Script, React hooks, Redux/Context API, and cross-platform development best practices
* Experience with native mobile development (iOS/Android) and ability to write custom native modules when needed
* Solid understanding of React performance optimization, including memory management, rendering optimization, and efficient API integration
* Experience with real-time data handling, Web Socket connections, and high-frequency data updates
*…