8+ years of professional experience in software development Advanced proficiency in JavaScript/TypeScript, ReactJS, and React Native Solid understanding of iOS and Android SDKs, including native development (Objective-C, Swift, Java, or Kotlin) Experience working on consumer payments or fintech mobile applications Strong knowledge of API design, application security, and performance optimization Familiarity with modern build pipelines, tooling, and testing frameworks Deep awareness of UI/UX principles Excellent problem-solving skills, attention to detail Strong communication skills in English