Senior Mobile Engineer (React Native) – Remote, Poland

Fundraiseup; Poland; Remote; PLN 284,000 - 327,000; Full time

Benefits offered by this job

31 days off

100% telemedicine plan

Home Office Setup Assistance

English learning courses

Gym or swimming pool

Co-working

Remote working

Job summary

Fundraise Up is seeking a senior mobile engineer to design, build, and maintain iOS and Android apps. You’ll own mobile initiatives end-to-end, influencing backend and web frontend as needed, and ensure reliability, performance, and security across devices and OS versions.

You’ll work in a distributed team across multiple countries, contributing to a large product ecosystem with a modern checkout and donor portals, using React Native, TypeScript, Node.js, MongoDB, and more.

Qualifications

• 8+ years of professional software development experience, including 3+ years with React Native.
• Proficiency in React Native and TypeScript — the primary craft.
• Strong JavaScript fundamentals — asynchronous programming, event loop behavior, error handling.
• Familiarity with the native iOS and Android platforms and their tooling (Xcode, Android Studio, Gradle).
• Understanding of mobile security — secure storage and handling of sensitive and payment data.
• English proficiency sufficient for daily written and verbal communication.

Responsibilities

• Implement features, fix bugs, and resolve production incidents across iOS and Android, extending to the backend and web frontend the product depends on.
• Own mobile initiatives end-to-end — gather requirements, design, decompose into tasks, implement, and deliver to production.
• Act as the team's primary technical escalation point for complex mobile problems across app, native layers, networking, and platform behavior.
• Review code and designs for correctness — navigation structure, rendering, native integration, and mobile patterns.
• Contribute to and evolve mobile engineering standards — architecture, testing, and release policy.
• Monitor the operational health of shipped work — track releases and respond to post-release issues.

Skills

React Native

TypeScript

JavaScript

English proficiency

Mentor teammates

Mobile security

Analytics monitoring

CI/CD

Problem solving

Tools

React

Vue.js

Webpack

Node.js

NestJS

MongoDB

Kafka

Bull (Redis)

Elasticsearch

Job description

Fundraise Up is seeking a senior mobile engineer to design, build, and maintain iOS and Android apps. You’ll own mobile initiatives end-to-end, influencing backend and web frontend as needed, and ensure reliability, performance, and security across devices and OS versions.

You’ll work in a distributed team across multiple countries, contributing to a large product ecosystem with a modern checkout and donor portals, using React Native, TypeScript, Node.js, MongoDB, and more.