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Ujjwal Halder began their professional career in 2006 as a J2EE Developer/Project Leader at Tata Consultancy Services. Ujjwal'sresponsibilities included understanding functional requirements, developing business logic using Core Java, Spring framework, and developing data access layer using Hibernate framework. Ujjwal was later promoted to J2EE Developer/Module Leader, where they continued to develop Web User Interface using JSP/Servlet, JSTL, and business logic using Core Java, Spring framework. In 2009, Ujjwal joined Cognizant Technology Solutions as a Lead Developer/Architect. Ujjwal'sresponsibilities included analysis of functional requirements, developing UI screens using GWT, and creating custom User Interface Components. In 2013, Ujjwal joined Saicon as a Lead Developer/Architect. Ujjwal'sresponsibilities included interacting with different teams and gathering requirements for analysis, maintaining interaction with the client, defining the Technology Stack of the application, and reviewing design and code.

Ujjwal Halder obtained a Bachelor of Technology in Computer Science and Engineering from the College of Engineering and Management, Kolaghat 107 between 2002 and 2005. In June of 2022, Halder obtained a Step Functions Subject Matter Expert certification from Amazon Web Services (AWS).