drupal backend development

I am looking for experienced Drupal backend developers to build dynamic web applications. The specific features or functionality I require include user authentication and authorization, content management, and e-commerce capabilities. The project must be completed within 3 months, and a new database needs to be created. The ideal candidate should be highly experienced and have advanced knowledge of Drupal coding and development. They should also be able to collaborate with other stakeholders and work autonomously to complete the job to a high quality in the desired timeline. I am looking for the best professionals that can rise to the demands.