Optimized database queries through indexing and query refactoring, resulting in 60% faster response times and 30% reduced server load. Developed a B2B supply chain platform integrating SAP ERP through GraphQL using Ruby on Rails and Next.js 13. Built an audit service that detected and reduced incorrect transactions by 85%. Achieved 95% test coverage using RSpec, reducing production bugs by 70%. Enforced design patterns and best practices, leading to a 40% reduction in code review iterations and technical debt.

Developed a robust parameter validation library, ensuring consistent and concise formation of client-side parameters, improving overall data integrity via Ruby 2.6.5. Optimized the Continuous Integration (CI) process, resulting in a 40% reduction in build time and enhancing the productivity of the development cycle using Knapsack. Designed and implemented new features for both web and mobile platforms with Reactjs and Ruby on Rails, including: - Health goal tracking - Labs for symptoms, conditions, and treatments - Push notifications - External marketing services Integrated with Amplitude to analyze users' behavior events. Debugged and enhanced the loading performance on the site. Maintained the UI library for reusable components in ReactJs. Mentored and supported intern and junior developers, assisting them with their tasks and fostering their professional growth. Maintained code quality and adherence to design patterns, ensuring a clean and maintainable codebase. Utilized Minitest/Jest for code quality assurance, achieving a total coverage of over 80% through comprehensive testing.

Implemented authorization using GraphQL to ensure secure access to system features. Worked with AS400, MySQL, GraphQL, PostgreSQL databases, and microservice architecture for efficient data management. Created and managed lanes and runs for the auctioning process with a microservice-based design, utilizing Ruby 2.6.5 and Rails 5.2. Converted the Frontend technology from AngularJs to ReactJs in seller dashboard pages. Integrated AngularJs with Pubnub services to send queue message events. Maintained the registration and seller dashboard pages of the car-selling site using JRuby Sinatra. Ensured smooth message queue processing by utilizing the Camel Java Router project to monitor queue backlog. Implemented alerts for production incidents using PagerDuty and DataDog, leveraging Terraform for seamless integration. Enhanced Jenkins pipelines with AWS EC2 to streamline development and deployment processes. Controlled code quality through the use of RSpec, conducting thorough testing to maintain high software development standards.

Integrated e-commerce system with a third-party accounting platform, authorizing access and establishing bank feeds for seamless synchronization of financial transactions. Implemented a new feature to automate transaction syncing from payments to the third-party platform using a scheduler, ensuring real-time data synchronization. Developed a manual syncing mechanism through CSV files, providing flexibility for users to manually upload transaction data when needed. Implemented a transaction approval workflow, requiring each transaction to undergo approval before going live, enhancing system security and accuracy. Maintained code quality using RSpec, writing comprehensive tests to verify functionality and behavior, ensuring a robust and reliable codebase.