Hello, I am Sajjad Umar, also known as Desi Developer. I have over 7 years of experience working with Ruby on Rails and I am passionate about it.As a professional Backend Engineer, I have designed and developed a wide range of systems, from basic e-commerce platforms to complex IoT and FinTech-based integrated systems.I am committed to sharing my knowledge and learning continuously. I write blogs, deliver keynote speeches, contribute to open-source projects, create free tools for developers, and produce videos for my Desi Developer YouTube channel.Additionally, I am a core contributor and manager of RubyConf Pakistan, the leading Ruby on Rails community in Pakistan.