Lead full-stack development using React, Node and TypeScript. Design scalable architecture, write and review code, ensure performance, accessibility and security, mentor off-shore teams, participate in Agile ceremonies, support production (including weekends/off-hours), and collaborate with cross-functional teams to deliver business-critical applications.

Lead design, develop, and maintain enterprise-grade React Native iOS and Android apps. Drive mobile architecture, CI/CD, security (OAuth2), performance optimization, testing, and cross-functional collaboration. Mentor developers and support production releases.