Senior Full-Stack Engineer with 9+ years of experience delivering scalable, secure, and high-performance web and mobile applications. Expert in React, Next.js, TypeScript, and Node.js/Nest.js, with backend expertise in GraphQL, REST APIs, microservices, and SQL/NoSQL databases. Skilled in system design, cloud-native development (AWS/GCP), containerization (Docker, Kubernetes), and CI/CD automation. Adept at implementing accessibility (WCAG), GDPR compliance, security (OAuth2, JWT), observability (Grafana, Prometheus, ELK, Sentry), and performance optimization. Strong collaborator and mentor, experienced in leading cross-functional teams, building design systems and reusable component libraries, and driving engineering excellence in Agile/Scrum environments.