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Senior Fullstack Mobile Engineer

3 weeks, 1 day ago
Spain
Full-time
Lead
Full-stack Engineer
Software Development
Android Studio CI/CD ClickHouse Elasticsearch Gradle HTTP JavaScript Kafka Koa Kotlin MongoDB NestJS Node.js React React Native Redis REST API Swift TypeScript Vue.js Xcode
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Fundraise Up

Fundraise Up

Fundraise Up specializes in enhancing online donation processes through AI-driven conversion optimization and integrated payment solutions, enabling organizations to maximize their fundraising potential and improve donor engagement.

Capital Markets
51-250
Founded 2017
View All Jobs 49

Description

  • Implement features, fix bugs, and resolve production incidents across iOS and Android, including related backend and web frontend changes.
  • Own mobile initiatives end-to-end from requirements gathering and design through implementation, testing, and production release.
  • Act as the primary technical escalation point for complex mobile issues and diagnose root causes across app, native, networking, and platform layers.
  • Review code and designs for correctness and alignment with mobile architecture and release standards.
  • Contribute to mobile engineering practices, including component architecture, native integration, testing, and release policy.
  • Monitor release health, staged rollouts, and post-release issues on both iOS and Android.
  • Support production operations such as incident response and rollback decisions.
  • Collaborate across backend, web, and mobile components to deliver features end-to-end.

Requirements

  • 8+ years of professional software development experience, including 3+ years with React Native.
  • Proficiency in React Native and TypeScript.
  • Strong JavaScript fundamentals, including asynchronous programming, event loop behavior, and error handling.
  • Working knowledge of relational and document databases, including data modeling, querying, and indexing.
  • Understanding of RESTful API design and HTTP fundamentals.
  • Familiarity with native iOS and Android tooling, including Xcode, Android Studio, and Gradle.
  • Understanding of mobile OS fundamentals, including app lifecycle, background execution, permissions, and memory constraints.
  • Experience with automated testing practices, including unit, integration, and E2E testing.
  • Understanding of mobile security, including secure storage and handling of sensitive and payment data.
  • Confident day-to-day use of AI-assisted development tools for research, troubleshooting, and implementation.
  • Ability to independently diagnose common React Native production issues, including rendering, navigation, networking, and app lifecycle problems.
  • Track record of owning mobile initiatives end-to-end, including backend and web frontend changes.
  • Experience designing mobile application architecture with trade-offs across performance, reliability, and observability.
  • Experience designing or integrating native modules and SDKs, including Swift/Kotlin changes and cross-layer debugging.
  • Experience owning the release process, including app signing, store submission, and staged rollouts.
  • Experience establishing mobile engineering practices such as standards, CI/CD, and release processes.
  • Experience designing resilient asynchronous and event-driven backend interactions.
  • Experience with mobile production operations, including monitoring, crash reporting, incident response, and rollback policy.
  • Demonstrated ability to mentor and develop less experienced engineers.
  • English proficiency sufficient for daily written and verbal communication.
  • Broader backend and database experience is preferred.
  • Experience with event-driven architectures and asynchronous messaging patterns is preferred.
  • Experience operating high-traffic, low-latency systems is preferred.
  • Experience with offline-first architectures and data synchronization over unreliable networks is preferred.
  • Familiarity with React Native New Architecture concepts such as JSI, Fabric, TurboModules, and Codegen is preferred.
  • Native development depth in Swift and/or Kotlin beyond React Native is preferred.
  • Experience with in-person or mobile payments and fintech products is preferred.
  • Experience with Stripe Terminal, Tap to Pay, or NFC is preferred.
  • Experience in a distributed, remote-first engineering organization is preferred.

Benefits

  • Compensation of €5,700 - €6,500 gross per month.
  • Private medical insurance for the employee and their family.
  • 23 paid vacation days per year plus 11 paid public holidays.
  • 5 company-paid sick leave days.
  • Equity options.
  • English learning courses.
  • Relevant professional education.
  • Home office setup assistance for furniture and equipment.
  • Gym or swimming pool access.
  • Remote working and co-working support.

Interested in this position?

Apply directly on the company website

Apply Now

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