Senior JavaScript Engineer (React Native)

Vacancy details
Software Engineering
JavaScript Engineer (React Native)
Senior
Poland, 
Ukraine
Remote

Explore the future of FinTech! With superb engineering, we help the finance industry to change just in one click! Join the global Intellias team to develop top-of-the-line solutions for the world’s leading FinTech companies.

What project we have for you

The client is the world’s first regulated Digital Asset Bank, founded on Swiss and Singapore dual heritage, operating globally. They make digital assets bankable, secure and convenient, empowering our clients to invest in the digital asset economy with complete trust. For the first time with the client’s Bank, major currencies and digital assets, including Bitcoin, Ethereum, digital CHF and asset tokens are seamlessly integrated in one account.

We are looking for a mobile engineer to join our team and help us develop a mobile app for the Bank’s clients from scratch.

What you will do

• Participate in functional requirements analysis (including communication with customer representatives)
• Describe and investigate technical design options
• Focus on solving complex tasks in a simple way with a given technology
• Participate in continuous improvements, including platform tooling and processes,
• implementing best practices and bringing on innovations
• Enforcement of non-functional requirements
• Perform code reviews and code optimizations
• Support of deployment and release processes, troubleshoot production issues
• Take responsibility and ownership of project components, master domain knowledge

What you need for this

Requirements:

  • 5+ years of hands-on experience with React Native and TypeScript
  • Familiarity with modern React patterns and state management (e.g., Zustand or Jotai Toolkit)
  • Experience with React Query (or similar server-state libraries)
  • Experience with React Navigation or Expo Router
  • Experience with secure storage solutions and basic mobile security concepts
  • Familiarity with Expo modules and config plugins (optional but appreciated)
  • Ability to work with native modules and basic Xcode/Android Studio configuration
  • Good understanding of testing (unit & integration) for React Native applications
  • Strong sense of ownership and high-degree of quality in delivered working results

Will be a plus:

  • Experience working with banking/financial applications
  • Experience with enterprise-grade CI/CD for mobile
  • Proactive communication and creative in designing new solutions

What it’s like to work at Intellias

At Intellias, where technology takes center stage, people always come before processes. By creating a comfortable atmosphere in our team, we empower individuals to unlock their true potential and achieve extraordinary results. That’s why we offer a range of benefits that support your well-being and charge your professional growth.
We are committed to fostering equity, diversity, and inclusion as an equal opportunity employer. All applicants will be considered for employment without discrimination based on race, color, religion, age, gender, nationality, disability, sexual orientation, gender identity or expression, veteran status, or any other characteristic protected by applicable law.
We welcome and celebrate the uniqueness of every individual. Join Intellias for a career where your perspectives and contributions are vital to our shared success.

Skills

React
ReactNative
ReactNavigation/ExporRouter
ReactQuery
TypeScript

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