For a job interview

I wrote a little text for a future job interview...
I think I made a lot of english errors... Feel free to correct me..
Many Thanks

"I am a graduate of the business school Telecom of Management, a school which is specialized in new technologies. I specialized there in web marketing. During my last year, I worked for IBM where I was in charge of marketing activities such as event management; also, I had the opportunity to work on social media and to give recommendations and action plans to optimize their presence on social network
After graduating from Telecom of Marketing, I went to work for HPS and CTS. I have worked at these firms for two years. HPS is a consulting firm specialized in information security; CTS is a software company. The latter sells an awareness program to train co-workers on best practices in terms of information security, for example. I’m in charge of digital projects.
I have worked on 4 projects :
1. Design and deploy a digital strategy: HPS wanted to develop a strategy of "social selling" to enhance its visibility, expertise and credibilty, and so asked me to design and develop a web marketing strategy to promote the firm’s expertise and solutions to generate new leads.
2. Redesign web site
3. Launch of a new web awareness application
4. Support for our customers on their change management projects

To conclude, I’m an experienced digital marketing manager, but one who doesn’t want to retreat into a job in the business sector. For this reason, I’m seeking to become a consultant, a position that will allow me to more fully apply my ability to work effectively on various issues in different environments. "