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Full Stack Engineer

OnHires · Miami, FL

📅 19/08/2026
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🌍 About Our Client One of our clients is building the next generation of global finance. They're creating a mobile-first platform that makes moving, spending, and managing money across borders as simple as using a traditional bank account—while leveraging cutting-edge blockchain technology behind the scenes. Users enjoy a seamless experience without ever needing to understand crypto. The company already serves thousands of customers across 130+ countries and is rapidly expanding its presence in the US market. Having recently secured $5M in seed funding from leading international investors, they're well-funded and entering an exciting growth stage. With a lean, highly technical team, every engineer has a direct impact on both the product and the company's future. 💼 About the Role This is a true founding engineering opportunity. You'll own major parts of the React Native application—from designing beautiful user interfaces to state management, API integrations, testing, and production releases. While React Native will be your primary focus, you'll work across the stack whenever needed. The team believes in shared ownership, giving everyone the opportunity to contribute wherever they can create the most value. If you love building polished consumer products and enjoy solving complex technical challenges, you'll feel right at home. 🔥 What You'll Be Doing Build and own major features of the React Native app end-to-end. Develop clean, scalable JavaScript and TypeScript code. Collaborate closely with founders, product, and design teams to bring ideas to life. Debug and solve complex issues across iOS, Android, APIs, and backend integrations. Optimize performance, animations, responsiveness, and overall user experience. Help establish engineering standards, architecture, and development best practices. ✅ What We're Looking For 5+ years of professional software engineering experience. Strong experience building and shipping production React Native applications. Expert-level JavaScript and TypeScript skills. A product mindset and passion for delivering exceptional user experiences. Comfortable working in fast-moving startup environments with high ownership. ⭐ Nice to Have Experience building consumer-facing mobile products. Expo, native modules, App Store releases, or mobile CI/CD. Backend or full-stack experience (Node.js, APIs). Web3, blockchain, or Solidity experience (nice to have, not required). Previous experience at an early-stage startup. Experience helping define engineering processes and technical standards. ✨ Why You'll Love This Opportunity Join as one of the company's first founding engineers. Build a product used by customers in 130+ countries. Work directly with the founders and influence product direction. Own features from idea to production. Create a world-class mobile experience where every interaction matters. Move fast, make decisions, and see your work shipped quickly. Help shape the engineering culture from the ground up. 🎯 Who Thrives Here? This role is perfect for engineers who love ownership, autonomy, and building products from the ground up. You'll thrive if you're someone who enjoys moving fast, wearing multiple hats, and shipping features that users genuinely love. Whether your background is in fintech, consumer apps, or Web3, what matters most is your ability to build great products and your excitement about solving meaningful problems.
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For people searching Engineer

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