React Native Developer

7 days ago


London, United Kingdom Sentinel Full time

Senior React Native Developer - 300K Salary - Onsite - London You will be working on building the next-generation crypto launchpad and trading/social platform — but with stronger security, better UX, and features to expand the community's reach What You'll Do Build, maintain, and iterate on a cross-platform mobile app using React Native Integrate with blockchain / crypto backends (Solana RPC, wallet connectors, Web3 APIs) Implement real‐time features: live updates, WebSockets, subscription streams Handle in-app state management, offline caching, synchronization, data persistence Ensure high performance, smooth animations, responsiveness even under high load Participate in code reviews, mentoring, architectural decisions Contribute to product & UX design discussions — help shape what features the app offers Skills Must‐have: Proven experience building and shipping React Native apps (3+ years) Strong command of JavaScript / TypeScript Comfortable with native modules (iOS / Android bridges) Nice-to-have / Bonus: Experience with CI/CD pipelines for mobile (Fastlane, Bitrise, CircleCI, etc.) State management experience (Redux, MobX, Recoil, or similar) What We Look For in You Pragmatic engineer — you balance speed with quality, deliver MVPs, iterate Ownership mindset — you see something broken, you fix it Strong problem-solving skills, especially in high load / edge-case conditions Passion for building mobile apps with great UX under tight constraints What We Offer Competitive salary + equity in a fast-growing crypto startup Opportunity to shape a unique product at the intersection of social + crypto Work in a small, passionate team that values quality, iteration, and innovation



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