Frontend Engineer (React Native)

Frontend Engineer (React Native)

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 FTSE100 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 is built here.

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 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.

• 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

How we work

We try to take a thoughtful approach to our ways of working as a company. We follow a hybrid working model with 3 days in the office – which we think balances the need to collaborate effectively and connect with each other. When it comes to how we deliver, there are 5 things we want everyone to do to drive high performance, better learning and career satisfaction:

• Lead and Inspire: Drives trust, alignment, and enthusiasm
• Think Big: Focus on the problems that most impact commercial outcomes
• Champion the client: Understand and prioritise client's needs
• Deliver at pace: Push for fast, sustainable growth;
• Raise the bar: Take ownership, be accountable and share feedback

We believe that diversity is vital to success, it fuels creativity, drives innovation and sets us up for global success. We’re committed to building teams with a variety of perspectives and skills to help us realise our vision and strategy, that’s why we encourage applications from people with diverse backgrounds and experiences to join us on this journey. Learn more about our D&I approach here.

The Perks

Your growth fuels our success! Thrive with tailored development programs, mentoring opportunities with leaders, and clear career progression. Expand your network through committees, sports and social clubs. Enjoy extra time off for volunteering and community work.

• Competitive salary
• Flexible Benefits Package on top of your salary (12%)
• Private medical cover for you and your family
• Life insurance
• Contribution to gym memberships
• 25 Days holiday, with 1 additional day off to celebrate your Birthday & 2 additional days off a year for voluntary work (28 in total
• The option to buy or sell holiday days.
• Unlimited access to the LinkedIn Learning Platform
• A comprehensive global and local onboarding process
• Employee-led LGBTQ+, Women’s, Black and Parents & Carers networks with an annual budget for organising events & projects that foster an open, diverse and inclusive culture
• Option to participate and create ESG initiatives based on IG Brighter Future Fund
• Enhanced primary (maternity), secondary (paternity), and shared parental pay and leave, as well as a range of support and benefits for parents

Learn more about the Perks here!

• Extensive experience of React Native development with a proven track record of delivering production mobile and/or web applications
• Strong expertise in JavaScript/TypeScript, 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, WebSocket connections, and high-frequency data updates
• Knowledge of CI/CD pipelines, automated testing frameworks, and deployment processes
• Experience with AI-assisted development tools - we're looking for engineers who see AI as a force multiplier, not a threat
• AI-positive mindset - you see AI tools as amplifiers of engineering capability, not replacements, and you're excited to push the boundaries of what's possible with AI-assisted development
• Strong English-language communication skills and the ability to work effectively in globally distributed, cross-functional teams
• A keen interest in ongoing learning, both business and technical – you'll gain deep understanding of IG's trading products and financial markets
• Familiarity with financial services or trading platforms is highly desirable but not essential
• Excellent problem-solving skills with a quality-first, ownership mindset – you build it, you run it, you love it
• This is a hybrid position (3 days onsite, 2 days remote work)