Senior Fullstack Mobile Engineer

About the role

Fundraise Up is looking for a Senior Fullstack Mobile Engineer to design, build, and maintain its iOS and Android applications. You will work remotely from Portugal (or any location) and join a distributed team that powers donation experiences for leading nonprofits worldwide.

Key responsibilities

• Develop and maintain React Native applications (Tap to Donate, Giving Station) using TypeScript.
• Integrate payment terminals such as Stripe Terminal and Tap‑to‑Pay.
• Consume and extend backend APIs built with Node.js, NestJS, MongoDB, ClickHouse and Redis.
• Ensure high performance, reliability, and security of mobile code.
• Collaborate with product, design, and QA teams to deliver features end‑to‑end.
• Write automated tests and monitor production with Sentry and PostHog.
• Contribute to backend or web frontend components when needed.

Required profile

• Senior‑level professional with strong mobile development experience.
• Fluent in Russian and English (minimum B2).
• Self‑motivated, comfortable working in a fully remote, distributed environment.

Required skills

• React Native (v0.79, old architecture)
• React 19, TypeScript
• React Navigation 7, TanStack Query 5, react‑hook‑form
• UI kit built with twrnc (Zodan internal UI Kit)
• Stripe Terminal / Tap‑to‑Pay integration
• Sentry, PostHog for monitoring
• Node.js, NestJS
• MongoDB, ClickHouse, Redis

What we offer

• Fully remote work with flexible hours.
• Opportunity to impact global nonprofit fundraising.
• Collaborative, multicultural engineering team.
• Access to modern tech stack and continuous learning.