This position is listed on behalf of a partner company, who manages all applications and next steps. Our partner is looking for a Senior Software Engineer, Mobile (React Native) based in the United States. The Senior Software Engineer will design, build, and evolve high-quality mobile applications serving users across iOS and Android. You’ll play a key role in shaping mobile architecture while delivering scalable, accessible, and reliable experiences. The position offers end-to-end ownership, from technical design and implementation through release, monitoring, and continuous improvement. You’ll work closely with Product, Design, QA, and backend engineering teams in a collaborative, distributed environment. Your expertise will help improve application performance, reliability, testing, developer tooling, and release processes. The role also provides opportunities to influence technical direction, reduce technical debt, and introduce AI-assisted development practices. Success will require strong React Native expertise, sound engineering judgment, and a proactive approach to solving complex mobile challenges.