Senior Mobile Engineer (Flutter + iOS)
#4966
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.
Key Responsibilities:
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.
Required Qualifications:
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.
Preferred Qualifications:
Exposure to Android development (Kotlin) and full cross-platform transitions.

N-iX
N-iX is a global software development service company that helps businesses across the globe create mind-blowing software products. Founded in 2002, today we’re a team of 2,200+ tech-savvy professionals working on innova...
Senior Mobile Engineer (Flutter + iOS)
Senior Mobile Engineer (Flutter + iOS)