Senior React Native Engineer (FinTech)

TL;DR

Senior React Native Engineer (FinTech): Developing a gamified platform and social hub for fintech associates with an accent on mobile user experience and high-stakes business logic. Focus on building communication and reward tools and integrating APIs for a high-performance mobile application.

Location: Warsaw, PL

Company

A global staffing company recruiting for a FinTech company that provides no-fee credit cards and a comprehensive mobile payment ecosystem.

What you will do

• Develop and maintain the customer-facing native application.
• Take ownership of end-to-end development of new features, from concept to deployment.
• Collaborate closely with backend engineers to integrate APIs and ensure a high-performance user experience.
• Write clean, efficient, and maintainable code adhering to team standards.
• Mentor other team members and contribute to a collaborative technical environment.

Requirements

• 5+ years of frontend or mobile development experience.
• Strong production experience with React Native, including app lifecycle and deployment to stores.
• Deep knowledge of JavaScript, TypeScript, and CSS.
• Experience publishing and maintaining apps in Google Play and the App Store.
• B.Sc. in Computer Science or equivalent.
• Fluent English proficiency for daily collaboration with the team in Israel.

Nice to have

• Experience with React.
• Familiarity with backend development in Java or Kotlin.
• Knowledge of WebSockets and end-to-end testing frameworks like Playwright.
• Prior experience in fintech, specifically with payment processing or financial services.
• Experience using AI development tools such as Cursor and Claude Code.

Culture & Benefits

• Opportunity to work on a strategic, gamified platform with a large user base.
• Collaborative environment with a focus on mentorship and knowledge sharing.
• Professional growth within a global staffing and FinTech ecosystem.