Lead research, design, prototyping, implementation, and deployment of end-to-end iOS solutions. Develop and maintain stable, high-performance, scalable iOS client SDKs. Collaborate with product management, frontend, and data science teams. Stay updated on iOS platforms, cloud technologies, and AI/ML frameworks. Research and implement mobile security innovations. Drive best practices for code quality, testing, and CI/CD. Mentor junior developers and contribute to team growth.