As a core back-end engineer, I contributed to the successful development and global expansion of the 'Passenger Assist' product, delivering to railway clients in Japan and the aviation client EMA.▪ Spearheaded the setup of the back-end structure and core models. ▪ Collaborated with cross functional teams and actively participated in Agile software development methodologies.▪ Designeded and implemented APIs for the SQR dashboard, Audit app and Passenger Assist.▪ Researched and implemented journey planner to fulfill user requirements.▪ Identified process improvement opportunities and implemented quick fixes to uphold product quality.▪ Evaluated new technologies and methodologies to enhance product development and delivery processes.

▪ Optimized multiple modules to improve efficiency and performance, leveraging both backend and frontend capabilities in Ruby on Rails and React.js. Integrated Stripe APIs for transaction management. Tracked user activity and lead sources, enhancing the lead identification process. Integrated Google and Facebook marketing APIs for audience management.▪ Maintained custom audiences and wrote multiple jobs to sync actions with shadow tables. ▪ Conducted thorough code reviews, ensuring code quality and adherence to best practices. ▪ Contributed to the development of a scalable architecture, ensuring the software's future growth and stability.

▪ Enhanced donation forms to improve user experience.▪ Developed backend structures for 'Events,' optimizing performance and scalability. ▪ Integrated Stripe Connect APIs for seamless transaction management.▪ Implemented stepwise forms for events, leveraging Stripe UPE for enhanced security. ▪ Improved the checkout process to reduce friction and increase conversion rates.▪ Developed data scrapers for multiple properties, ensuring efficient data acquisition. ▪ Created APIs for the in-house management site and AI platform, enhancing data accessibility.▪ Established backend structures and APIs in Node.js for Mailbot, streamlining communication workflows.▪ Managed notification entries in CRM systems, ensuring effective communication with clients. Implemented templates management for blast emails, facilitating personalized communication.▪ Migrated notifications from periodic AJAX calls to GraphQL subscriptions, optimizing realtime updates.