Summary: Seeking a Senior React Native Engineer to architect and build a greenfield mobile application from scratch, owning core mobile decisions and collaborating with US-based stakeholders. Highlights: 1. Architect and build a new greenfield React Native application 2. Define architecture and establish core mobile patterns 3. Collaborate with designers, backend engineers, and stakeholders We are hiring a **Senior React Native Engineer** to build a new greenfield mobile application from scratch for iOS and Android. This is not a feature\-only role. You will define architecture, establish patterns, and take ownership of core mobile decisions while collaborating directly with US\-based stakeholders. What You’ll Do * Start and architect a new React Native application from foundation to production * Design scalable mobile architecture and core application patterns * Integrate with a production GraphQL API (.NET backend) * Build data\-intensive views with strong performance and usability * Collaborate with designers and backend engineers * Participate in code reviews and mentor other engineers as the team grows * Communicate directly with English\-speaking stakeholders Required Experience * 6\+ years of software development experience * Strong production experience with React Native * Experience shipping apps to both iOS and Android * Solid JavaScript and TypeScript knowledge * Experience consuming GraphQL APIs in production * Understanding of CI/CD and automated testing * Advanced English (client\-facing role) Nice to Have * Experience starting greenfield projects * Experience in fintech or financial services * Exposure to .NET or Azure environments Work Model Hybrid role based in Mexico City. 1 day per week onsite required. Job Type: Full\-time Pay: $100,000\.00 \- $120,000\.00 per month Language: * English (Required) Work Location: Hybrid remote in 03720, Nochebuena, CDMX