Senior React Native Engineer Product Engineering · Stockholm ·

Northmill Oy; Katowice; Remote; PLN 80,000 - 100,000; Full time

Job summary

A leading fintech company is seeking a Senior React Native Engineer to join a cross-functional team in Katowice, Poland. You will contribute to the development of mobile and web banking applications using React Native and TypeScript. The ideal candidate has strong experience in mobile app development and is familiar with modern development practices. This position offers competitive compensation and a collaborative company culture.

Benefits

Competitive compensation

Generous wellness allowance

Daily breakfast and fresh fruit

Support for learning and development

Qualifications

• Solid experience in building mobile and/or web applications.
• Experience with React.js and building component-based UIs.
• Comfortable using modern dev practices like CI/CD and testing.

Responsibilities

• Join a cross-functional product team as a Senior React Native Engineer.
• Help build customer-facing features for digital banking applications.
• Guide architectural decisions and improve ways of working.

Skills

React Native

TypeScript

React.js

APIs

Agile workflows

Education

Degree in Computer Science, Engineering, or related field

Job description

Northmill Bank is a Swedish fintech company dedicated to revolutionizing the way we manage and protect our finances. We're creating a different kind of banking experience — digital yet personal.

Founded in 2006, Northmill has grown to over 200 employees across 3 countries, 2,500 merchants, and 600,000 users. We use the latest technology to build secure, smart, and user-friendly products for both consumers and businesses. Our customers are the reason we do what we do. We're a 100% cloud-based product company where technology drives everything we build.

Take the chance to be a part of us and our journey!

About the role:

As a Senior React Native Engineer, you’ll join a cross-functional product team and play a key role in shaping and building our mobile and web banking applications. You’ll work hands-on with React Native, React.js, and TypeScript, contributing to both the technical foundation and the user experience of our products.

You’ll help build customer-facing features for digital banking — including payments, credit, and personal finance tools — all designed to improve financial wellbeing.

You’ll work closely with backend developers, designers, and product managers to bring new features to life — always with performance, security, and usability in mind. You’ll also help guide architectural decisions and continuously improve our ways of working.

You’ll be based in Stockholm, working alongside a local and international team, including our Engineering Center in Katowice, Poland.

Your background:

• Solid experience in building mobile and/or web applications
• Strong skills in React Native (CLI or Expo) and TypeScript
• Experience with React.js and building component-based UIs
• Familiar with web services and APIs
• Comfortable using modern dev practices (code reviews, CI/CD, testing)
• Exposure to Agile workflows

Bonus points if you also have:

• Experience with native Android and/or iOS development
• A degree in Computer Science, Engineering, or a related field
• Backend experience NestJS, GraphQL and familiar with Accessibility (a11y)

What we offer:

• A key role in a product-first, cloud-native tech company
• The chance to shape both technical architecture and product direction
• A modern office in the heart of Stockholm, with a rooftop terrace and stunning views
• Collaboration with talented, humble colleagues in a flat organization
• Competitive compensation and benefits
• Support for your learning and development
• An open, friendly culture that values ideas over titles

Fun Facts:

• Daily breakfast, fresh fruit, and our sacred Friday fika
• Generous wellness allowance and regular visits from a massage therapist
• A treadmill in one of our conference rooms (yes, really!)
• Legendary “Northchill” afterworks and “Northcon” – our own internal conference (often held abroad)
• Celebrated team wins, product launches, and milestones together
• A team-first, non-corporate culture with space for big ideas and small rituals

Apply today and be a part of Northmill!