Wordpress Performance + Speed Optimization For Frontend/Backend

I am looking to optimize the performance and speed of a Wordpress website, both on the frontend and backend. I understand the importance of optimizing functions in order to improve overall performance and am looking for an experienced Wordpress developer to deliver the highest quality of service. I do not want to limit the number of plugins used, but rather would like the optimization process to be thoroughly done in order to ensure the best results. Furthermore, I fully recognize the importance of backing up my Wordpress site regularly and am willing to implement such measures for optimal security.