Ujjwal Singh has diverse experience in data analysis and machine learning, currently serving as a Supervised Learning QA at ReTech Labs, Inc. since January 2021. Prior to this role, Ujjwal worked as a Data Analyst at Grroom, focusing on data annotation and model creation using yolov3 and VGG16 algorithms. Ujjwal has also gained experience in business analytics at The Sparks Foundation, where responsibilities included data visualization, analysis, and machine learning implementation using Python. Earlier career experience includes a position as a Mechanical Engineer at Fluidline Groups, emphasizing data visualization and predictive analysis. Ujjwal holds a certification in Business Analytics from Port Learn and a degree in Mechanical Engineering from Maharshi Dayanand University.