At Smart, our mission is to transform retirement, savings and financial wellbeing, across all generations, around the world.

The Role

As a Mobile Engineer, you’ll be at the forefront of building and scaling cross-platform apps with React Native and Expo. Our projects are deeply rooted in the FinTech space, with a strong focus on the pensions and savings industry. You’ll contribute to apps that help people manage their financial futures, engage with their retirement savings, and make better-informed financial decisions — creating real impact in users’ lives.You’ll join a collaborative, cross-functional team made up of UX designers, frontend and backend engineers, QA specialists, and product managers. We work in an agile environment where knowledge-sharing and pair programming are encouraged, and where your input will directly shape our mobile architecture and feature delivery.We place a strong emphasis on learning and development:

• Hands-on experience with the latest Expo SDKs and React Native ecosystem tools
• Opportunities to explore native modules and integrations when Expo or React Native requires extensions
• Work with mobile animations, transitions, and interactive design patterns to enhance user experience
• Exposure to greenfield technologies and new frameworks in the mobile and FinTech space
• Access to internal workshops and tech talks
• Dedicated time for personal growth — whether deepening your expertise in React Native, expanding into backend or DevOps, or growing toward technical leadership

If you’re passionate about building high-quality mobile experiences and want to grow within a supportive team that values innovation, this role will give you the platform to do just that.

Key Responsibilities: 

• Build and maintain mobile apps with React Native + Expo across multiple clients
• Shape the architecture and technical decisions of our apps
• Improve CI/CD pipelines and deployment workflows (Expo builds, OTA updates)
• Manage releases to the App Store and Play Store
• Review code and ensure best practices in React Native + Expo
• Collaborate with UX, FE, and BE teams in a cross-functional environment
• Share knowledge and drive excellence across our mobile community

WHO WE’RE LOOKING FOR

The skills, experience, and aptitudes we are looking for are listed below but please don’t be discouraged from applying if you don’t meet every single one of these criteria – having a ‘can do’ attitude is sometimes more important than being able to tick every box:

• Proven React Native + Expo and TypeScript experience
• Hands-on with the latest Expo SDK and ecosystem
• Experience delivering apps through the full SDLC to app stores
• Strong communication and collaboration skills
• Passionate about mobile quality, performance, animations, and user experience

WHO WE ARE

We work in partnerships with governments and financial institutions in the UK and internationally. Our cloud-native digital platform is revolutionising how people around the world think about, and save for, their retirement.

At heart, we’re a financial technology business. What we do is all about innovation, and using the power of digital change to put the customer first. Our Engineers will tell you that working at Smart gives you the opportunity to play your part in developing world-class technological solutions, working with – and learning from – like-minded people.

You’ll also find that, across our business, our colleagues love Smart’s culture, and how what we do means better financial outcomes for savers. That feels worthwhile, and it means that what we do, collectively, goes way beyond the nine to five of a typical working day.

Don’t just take our word for it – you can see what our colleagues say about working at Smart on the Great Place To Work website and Glassdoor.

• 26 days’ of paid holiday per year + Polish bank holidays
• 2250 PLN annual training budget to spend on your professional development
• Health insurance (including dental care) via TU Inter
• MultiSport Plus Gym Card
• Online English lessons during working hours
• Sick leave in accordance with Polish labour law
• Paternity and maternity leave in accordance with Polish labour law
• Additional employer contribution to the Employee Capital Plans (PPK) of 2.5%
• Death in service insurance cover
• Fully-paid five-week sabbatical after five years of employment
• In the Krakow office wellbeing services, such as manicures, massages and barbers

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We think Smart is an awesome place to work. If it sounds like somewhere you’d like to work, too, and if you’re ready to play your part in our continued success in the future, then naturally we’d love to meet you.