Responsible for frontend architecture and the full application development lifecycle, including production releases, feature development, and maintenance of existing codebases. Ensured stability, scalability, and alignment with business requirements. Led the end-to-end integration of third-party services, including advertising and payment systems. Contributed to the release of five applications with a combined reach of 200,000+ monthly active users (MAU). All solutions were developed from scratch and tailored to specific product and technical needs. Contributed to technical decision-making, task distribution, and cross-functional collaboration, including estimating implementation timelines and improving frontend development processes.