Many times when I am taking interview I asked same question but answers bit awkward and some times it seems people don't know themselves. Some people start explaining about projects, some about their company, some emphasize lot on work experience, and some even tell about personal life.
I prepared my introduction last year and I really got success with this introduction -
"Hi!!! I am and I have 10 years of industry experience in IT Architecture, IT Development, and IT Support. I have worked with big technology firms, startup, bank, telecom, and Advertising companies in roles requiring leadership, management, consulting, communication, team work, and technical skills. Currently I am working with as Solution Designer & Project Lead for Online banking applications, which are used by several Banks including Credit Cards, Retail, and Wealth. Before Barclays, I was with IBM working as Team Leader and I was part of Smarter Planet initiative project to build load shedding solution for EDF, France.
I have designed and developed Middle Office for Stock Exchange, Enterprise Integration layer for Telecom giant, and CRM for Advertising firms. I worked with a Startup for 3 years as a Technology Consultant in which not only I provided technical consulting but also understood business of clients and proposed & developed solutions such as digital marketing, data management, and analytics.
I completed my graduation in Computer Science in year <> and I have interests in Travelling, Blogging, Psychology, and active lifestyle. I ran personal blog for more than 5 years, and I published white papers, and presented technology architecture in companies I have worked.
I have coached and trained my colleagues & friends over technologies, methodologies, latest trends, and work life balance. I am active on most social media sites and I have people from every background in my network. "