Dear Sir/Madam
I am a graphic designer with a wealth of experience, and would be more than happy to help out with your project.
I can see from your example image that you are looking for some vector-style graphics that represent the cloud-based nature of your business. I would suggest the use of neutral, but pleasing colours would present a mature yet vibrant aesthetic, with a view to suggesting your credentials as both reliable, efficient, and knowledgable with current technologies. A strong use of contrast could be used to highlight a sense of urgency and strength,
I would approach this project by creating a number of draft designs based upon your brief and example, and then amend / proceed with the designs you felt to be most suitable for your needs. I would be happy to discuss colour schemes and the wider aesthetics of your brand and web-site so as to create the most suitable design.
Please feel free to get back in touch if you would be interested in my services, or would like any more info.
All the best
Daniel