• Architect scalable, secure, and maintainable systems across backend, frontend, and database layers. • Lead design discussions, code reviews, and engineering best-practice initiatives. • Evaluate new technologies and guide the adoption of tools that improve developer productivity and system performance. • Define and document architecture patterns, design principles, and shared libraries for reuse across teams. • Partner with DevOps to design efficient CI/CD pipelines, deployment automation, and observability tooling. • Design, build, and maintain production-grade mobile applications for Android, iOS, or cross-platform frameworks. • Write clean, testable, and efficient code following established coding standards and contributing to their evolution. • Optimize system performance, reduce technical debt, and improve reliability. • Collaborate with QA engineers to develop automated testing strategies and ensure high code coverage. • Mentor and coach mid-level and junior engineers to foster career growth and skill development.