Senior Mobile Engineer

We’re on a mission to back the UK’s small businesses like no one else 🚀

Small businesses are the backbone of the economy, and we’re here to help them win. We’ve built a platform that uses clever data to get them the funding they need in minutes, not weeks.

At Funding Circle, we have the restless energy of a fintech start-up with the stability of a public company. It’s a unique mix that gives Circlers the autonomy to take ownership and the scale to make an impact that truly counts.

We’re a high-performing team that chooses to lift each other up. We challenge, we champion, and we have each other’s backs - because we know that when we stand together, we move faster and build better.

The impact is real: Last year alone, the businesses on our platform generated £7.2bn for the UK economy 📈 Come and join a mission that matters!

[Read our Impact Report] | [See our Trustpilot]

The role ⚡

📍 London (Hybrid) | 🤝 2 days in the office | 💰 Competitive Salary + Benefits

We are looking for an experienced React Native Engineer who wants to work on an exciting new product, within a successful fintech. You are comfortable operating in an environment of fast pace and thrive in solving hard problems within a cross-functional team.

As a key member of our Engineering team, you will play a vital role in building and scaling our mobile app, empowering businesses to access flexible financing solutions. Your passion for technology and your ability to solve complex problems will be instrumental in driving our mission forward.

• Leading on initiatives that improve or add functionality to Funding Circle mobile applications delivering a great user experience for customers

• Collaborating as part of an agile cross functional team, as well as technology guilds

• Implement business functionality, using React Native, for both iOS and Android

• Participate in code reviews, technical discussions and team collaboration, including mentoring colleagues in the mobile team

• Write unit, integration and end-to-end tests to ensure code is well tested

• QA features to find bugs, usability issues and performance concerns

What we’re looking for 🌱

We value deep expertise, but a growth mindset and good energy are what really make our team click. We’re a group that chooses to lift each other up and think smart every day.

• Commercial experience with React.js, React Native and the associated ecosystem

• Strong mobile automated testing experience (unit, integration & end-to-end)

• Excellent communication, both written and verbal

• Good JavaScript knowledge, ideally including TypeScript

• Experience with continuous delivery, build pipelines and app releases (both App Store and Play Store)

• Familiarity with mobile ecosystem tooling such as Firebase.

• Familiarity with Gradle, XCode and other native build tools

• Ability to work with REST APIs and third-party services/libraries

• Solid understanding of software engineering principles

• Experience with code version control

• Able to architect custom AI solutions and smart automated systems that are safe, maintainable, and aligned with our long-term mission

• Act as a technical bridge and mentor, training “builders" across the company to move from basic AI usage to sophisticated system creation

We’re building a place where everyone truly feels they belong. Even if your past experience doesn't align perfectly with every requirement, we'd still love to hear from you.

Why join us? 💜

We back you to build an incredible career and by joining us, you'll be part of one of The Sunday Times Best Companies to Work For 2026! As a flexible-first employer, we use a "best of both" approach. We’ll see you in our London office to collaborate – with barista coffee and subsidised Just Eat lunches on us!

Our Circler Proposition focuses on five areas:

• Flexibility: We provide a benefit allowance you can tailor to your own life and family.

• Health: This includes private medical and dental, health assessments, and access to a digital GP.

• Wealth: We offer life assurance, share schemes, and financial coaching.

• Development: You get a dedicated annual learning allowance to help you level up.

• Lifestyle: We have electric car and cycle-to-work schemes, plus season ticket loans.

We also have award-winning parental leave policies. We're here to support you through the big life moments, from fertility treatments to new additions to the family.

Ready to join a mission that matters? We’d love to chat!