React Native Developer

Grinteq, New York, NY, USA

Job type: Full Time

Position

We're looking for a Senior Mobile Engineer (React Native) to join a fintech project. You'll work on a mobile app, building payment and banking features in a product-focused, cross-functional team. This role is ideal for engineers with strong fintech experience who enjoy shipping secure, high-impact mobile solutions.

Responsibilities and duties

Develop and maintain React Native iOS and Android mobile applications for fintech products.
Integrate with payment providers and banking APIs (Stripe, Adyen, open banking, PSD2).
Collaborate with cross-functional teams, including Product, Design, and QA, to deliver high-quality features.
Implement secure, reliable, and scalable solutions, including risk/fraud prevention mechanisms.
Contribute to CI/CD pipelines, code reviews, and support QA automation efforts for mobile and API testing.
Qualifications and skills

Experience in fintech software development, with at least 3+ years in React Native (iOS/Android).
Solid background in fintech/banking products (payments, wallets, lending, BNPL, card, or banking operations).
Hands-on experience integrating payment providers (ideally Stripe, Adyen, PayPlug, or similar).
Experience working with banking/financial APIs (open banking, PSD2, or custom bank APIs).
Good understanding of security, risk, and fraud detection concepts in financial products.
Strong knowledge of TypeScript/JavaScript, REST/JSON, and CI/CD.
Experience working in cross-functional product teams (Agile/Scrum) closely with Product, Design, and QA.
Nice to have:

Experience setting up or contributing to QA automation (mobile UI/E2E tests, API tests).
Experience with risk/fraud systems, scoring engines, or rule engines.
Experience with high-availability and high-load systems.
What we offer

A decent salary level which allows you to think about our mutual success and not about tomorrow.
Flexible working hours. You create your own schedule.
Possibility to work remotely. You prefer home office or traveling around? Easy, that's exactly how we operate.