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N-iX Logo N-iX · IT - Software Development

Senior Mobile Engineer (Flutter + iOS)

Latam · Job Posted April 23, 2026
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Job Description

N-iX is a global software development service company that helps businesses across the globe create next-generation software products. Founded in 2002, we unite 2,400+ tech-savvy professionals across 40+ countries, working on impactful projects for industry leaders and Fortune 500 companies. Our expertise spans cloud, data, AI/ML, embedded software, IoT, and more, driving digital transformation across finance, manufacturing, telecom, healthcare, and other industries. Join N-iX and become part of a team where your ideas make a real impact. Our client is a leading, fully regulated US-based digital asset trading platform. They provide secure, low-latency access to cryptocurrency markets, acting as a bridge between traditional finance and the Web3 ecosystem. The Senior Software Engineer will play a pivotal role in transitioning the core mobile platform from native environments to a unified Flutter/Dart codebase. You will maintain the stability of the existing production iOS app while architecting and developing robust, scalable cross-platform features, ensuring a seamless migration process.

Job Responsibility

  • Maintain, enhance, and support our production native iOS application written in Swift
  • Collaborate on the design and development of a new Flutter/Dart codebase, ensuring performance and scalability
  • Build cross-platform mobile features in partnership with Android engineers, backend developers, and product teams
  • Contribute to shared tooling, CI/CD pipelines, and deployment workflows
  • Uphold high engineering standards and best practices throughout the hybrid mobile migration
  • Troubleshoot and resolve integration, compatibility, and performance issues in both native and cross-platform stacks
  • Provide mentorship to fellow mobile engineers, especially on iOS and native integrations

Requirements

  • 5+ years of professional mobile development experience, including 3+ years of iOS development using Swift
  • At least 1-2 years of hands-on experience with Flutter/Dart or demonstrated ability to adopt new cross-platform technologies
  • Experience supporting production iOS apps through multiple OS cycles
  • Understanding of platform interoperability, including Flutter platform channels and native SDK integration
  • Proficiency in CI/CD and release workflows: Fastlane, App Store Connect, TestFlight
  • Familiarity with performance monitoring tools like Xcode Instruments, Flutter DevTools, and Firebase
  • Strong architectural judgment, especially in platform migrations or codebase rewrites

Nice to have

Exposure to Android development (Kotlin) and full cross-platform transitions

What we offer

  • Flexible working format - remote, office-based or flexible
  • A competitive salary and good compensation package
  • Personalized career growth
  • Professional development tools (mentorship program, tech talks and trainings, centers of excellence, and more)
  • Active tech communities with regular knowledge sharing
  • Education reimbursement
  • Memorable anniversary presents
  • Corporate events and team buildings
  • Other location-specific benefits
N-iX - All Job Offers

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