As a founding backend developer at Keychain, I spearhead the integration of Supertokens, a state-of-the-art user authentication solution, and manage the user service, the core of Keychain’s authentication infrastructure. I apply my robust background in AWS infrastructure, backend development, and project leadership to design and implement scalable and reliable systems, leveraging distributed computing principles and best practices.Previously, I was a software engineer at Amazon, where I led the complete infrastructure deployment for Postcard deliveries, resulting in an estimated 8-10% reduction in total returns, and successfully launched Free Returns in Germany and France, increasing customer spending by 5%. I also contributed to a $10.9 MM fraud prevention project in Japan, and implemented a new refund component to comply with the tax regulations in California. Additionally, I have experience as a Python backend developer at Tata 1mg, where I was responsible for database migration, NeuCoins integration, and SQL injection handling. I graduated with a Bachelor of Engineering degree in Computer Science from Thapar Institute of Engineering & Technology in 2022.With expertise in machine learning, artificial intelligence, and Spatio-Temporal Audio-video analysis, I thrive on solving complex technical challenges and pushing the boundaries of technology. I am committed to continuous learning and innovation, and I value creativity, collaboration, and impact. I am always eager to explore new opportunities and connect with like-minded professionals. Please feel free to drop me a line at roushansingh4@hotmail.com.