• Developed proxy Train project, responsible for managing the complexities of train-related operations, including search, booking, issuance, and revalidation. Separated provider-specific complexities from the core system, implementing design patterns like Circuit Breaker to ensure system stability and efficiency.• Revamped the legacy International Flight project by creating a new scalable and maintainable system. Focused on ensuring data integrity and separating provider complexities to improve performance and extendability, resulting in a 2-3x increase in daily sales.• Developed and led the Domestic Flight project, mirroring the international project. Additionally, refactored core flight domain features, contributing to increased sales and facilitating the transition from legacy CodeIgniter 2 code to Laravel, enhancing overall system performance• Led the complete migration of blog system from CodeIgniter 2 to WordPress. This transition empowered the SEO team with better tools and features, improving the overall performance of the content creation team due to their familiarity with WordPress, leading to enhanced efficiency.