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.
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.
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
*not applicable for freelancers