- Guided the development team using Ruby on Rails with code quality, best practices, and SOLID principles, ensuring maintainability and scalability of the codebase.- Applied automated testing and unity test strategies using RSpec, increasing test coverage by over 70%, resulting in faster, more confident deployments.- Introduced best practices for writing specs, including request tests and failure scenario testing, enhancing the robustness of the testing process.- Refactored legacy code without test coverage to align with updated module behaviors, ensuring consistency with the rest of the system. Created specs using RSpec to cover functionality and verified functionality post-refactor.- Optimized complex database queries for performance, reducing query execution times in multi-join reports from minutes to seconds, leading to significant performance improvements across key operations.These experiences highlight my ability to drive efficiency, reduce errors, improve performance, and ensure code consistency and scalability, ultimately contributing to the overall success of the projects I work on.

I played a special role in maintaining and modernizing a Ruby on Rails legacy codebase for Travel Pass, a trip-planning platform. - Refactored and updated key components of the application using SOLID principles, enhancing maintainability and scalability I Restructured the logging architecture by introducing a helper class for centralized log management, applying DIP - dependency inversion principles. This prepared the system for future integrations with logging tools like Kibana. - Improved system performance by analyzing queries on PostgreSQL database and page load times using DataDog, resolving issues caused by inefficient SQL queries, excessive join tables, and missing indexes. - Developed integrations with partner payment services to streamline hotel booking transactions. - Utilized AWS services such as RDS, ECS, and S3 for infrastructure management, ensuring the stability and performance of cloud-hosted services. - Developed implementations that consumed and returned data via GraphQL, gaining hands-on experience with GraphQL in the process.- Created an API module for the call center system to retrieve the status and history of bookings, with full documentation using Swagger.

- Built and maintained backend services using Ruby on Rails, PostgreSQL, and Redis for caching and asynchronous processing in a microservices architecture.- Developed messaging services powered by Kafka, enabling real-time processing and responses based on specific topics, improving system responsiveness.- Integrated legacy systems using SOAP, particularly with Tramontina, leveraging the Savon gem to access resources via WSDL and ensure smooth data exchange.- Optimized the company's e-commerce sitemap processing, reducing the time from hours to minutes, significantly improving efficiency in generating thousands of pages for categories, subcategories, product groups, and more.- Jenkins and CI/CD: Gained hands-on experience with Jenkins, deploying services to controlled staging environments to ensure seamless testing and integration.These experiences highlight my ability to design scalable backend systems, integrate complex legacy services, and optimize critical processes, ultimately improving efficiency and ensuring seamless operation across the platform.

- Led the development of a real estate platform using Ruby on Rails, PostgreSQL, and Redis, initially focused on apartment listings, photo management, and marketing campaigns, which significantly increased lead generation.- Developed a dashboard for real estate agents to manage leads, track marketing investments, and measure conversion rates, providing key insights into campaign and sales performance.- Built features allowing users to list properties on the platform, helping expand the company’s real estate offerings.- Implemented a property scraper to source listings from local real estate websites, enabling agents to proactively meet client needs.- Deployed and managed the application on Heroku using Bitbucket Pipelines, Postgres, Redis, and New Relic for traffic monitoring and query optimization.- Set up a strict CI/CD pipeline that enforced code quality checks using RuboCop, Reek, and Brakeman, along with RSpec for test coverage, ensuring only well-tested code could be merged into staging and production.These accomplishments demonstrate my ability to lead full-cycle development, optimize system performance, and enforce rigorous code quality standards, ultimately delivering a scalable platform that significantly improved lead generation, sales efficiency, and property management.

As my first professional experience, I contributed to the development of an e-learning platform using Ruby on Rails and PostgreSQL. - I specifically developed a scoring and badge system that enabled clients to assess employees’ performance and make decisions based on their achievements. The feature significantly improved how clients determined employee readiness and competency.The project utilized Ruby on Rails for both backend and frontend, with Bootstrap for styling and JavaScript integration.