Designed and implemented contact segmentation for SMS and email campaigns, improving targeting capabilities and enhancing campaign flexibility by 20%. Developed a URL shortening/tracking microservice for SMS campaigns using Sinatra, enabling real-time analytics and improving campaign performance monitoring by 30%. Played a key role in the high-priority BSR team, resolving over 90% of team bugs independently and ensuring seamless operations for critical system issues. Optimized Sidekiq jobs, reducing job processing time by 40% and improving system performance. Delivered high-quality solutions that earned a 5/5 performance rating and the prestigious "Star of the Month" award for outstanding contributions. Technologies Used: Ruby on Rails, Sinatra, MySQL, PostgreSQL, Redis, Sidekiq, Git, Docker.