As you work to manage your reputation, be active online in ways that reflect well on you as a professional. You can pump up your reputation in unlimited ways.
Blog about topics that interest you and that establish you as an expert on a relevant subject. You don't have be the world's top expert -- just a well-rounded, trustworthy professional who puts thought and value into online content.
By providing valuable information that readers appreciate, you attract people who will re-post your information (with credit) and link to the content you created. This all drives more traffic to your content, whether it's a Web site, blog or other resource, and pushes your site closer to the top of Google results.
This betters your online reputation in a big way. What's more, search engine results will list your positive accomplishments ahead of more personal items.