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Senior React Native Engineer at Arena Club. . Location: Remote. About Arena Club.  . . If you’re fascinated by sports cards and memorabilia, your search ends here. Arena Club is pioneering the collectibles domain by introducing the first-ever digital card show. Spearheaded by 5x World Series Champion Derek Jeter and serial entrepreneur Brian Lee, Arena Club has developed a fully digital marketplace. This innovative platform is built on trust, transparency, and fun, featuring grading & authentication, vaulting, and digital pack openings for collectors to build and showcase their collections in a personalized online showroom from anywhere in the world..  . .  . . About the Role. . We are seeking a highly skilled and experienced Senior Mobile Engineer with strong experience in React Native to help scale and evolve Arena Club’s mobile app. As a key member of the team, you’ll deliver new features, refine performance, and ensure world-class user experiences for our growing community of collectors. This role offers a unique opportunity to play a crucial role in shaping and building app-only features that enhance our platform.. .  . . What You Will Do. . . Contribute to the ongoing development of Arena Club’s mobile app using React Native, delivering new features and enhancements that delight our users. . Collaborate with product managers and designers to create intuitive, engaging customer experiences. . Partner with backend and web engineers to ensure seamless functionality across platforms. . Design and implement robust app architectures and complex user interfaces. . Ensure the performance, quality, and responsiveness of the application. . Raise the engineering bar, set development standards, and identify and correct bottlenecks. . Help maintain code quality, organization, and automation. . .  . . Qualifications. . . Bachelor’s degree in Computer Science, Engineering, or a related field. . 7+ years of experience in mobile application development. . Proficient in React Native with a strong understanding of the iOS and Android ecosystems. . Familiarity with modern mobile frameworks and tools (Rx, IoC/DI, analytics, A/B testing, Bazel) . . Experience leading mobile app development projects and deploying apps from scratch. . Experience with automated testing frameworks and continuous integration. . Solid understanding of mobile app architecture and life cycle. . Experience with automated testing frameworks and continuous integration. . Familiarity with cloud messaging APIs, push notifications, and building e-commerce marketplaces. . Hands-on experience using AI tools (Claude or Cursor preferred; other agentic tools welcome) to ship code, build agents, and automate workflows. . Ability to work effectively in a remote team environment and collaborate with engineers across various time zones. . Strong problem-solving skills and a can-do attitude. . .  . . The Arena Club Standard. . Life at Arena Club isn’t for the faint of heart — and that’s by design. We’re building products and experiences the collectibles world has never seen. This is a proving ground. It demands your best every single day, because anything less means you’re falling behind.. . From day one, you’re in the game. Trusted to deliver, expected to own outcomes, and driven to raise the bar higher than you thought possible. We don’t just execute — we innovate, compete, and win together. That’s how real breakthroughs happen.. . If you want routine or predictability, you won’t find it here. But if you’re ambitious, relentless, and hungry to prove yourself on a team built to dominate — step into the arena. You’ll discover growth and reward here, unlike anywhere else.