• Develop Android applications, libraries, and modules end-to-end using modern approaches.
•Design architecture; implement business logic; integrate with external APIs; handle data and implement UI.
•Optimize performance and security; refactor and maintain legacy codebases.
•Code reviews and technical documentation.
•Integrated with other systems using cryptography and low-level protocols.
• Led Android engineers; collaborated with cross-functional and international teams; conducted R&D.