Junior architects, though early in their careers, play a vital role in architectural firms. They bring fresh perspectives and new ideas, which can be crucial for innovation and keeping the firm's designs current. 

They often handle a variety of tasks that are essential to the daily function of the firm, including creating models, preparing presentations, and assisting with design development. Their work supports senior architects, allowing them to focus on more complex aspects of projects. Junior architects also represent the future of the firm and the profession, and investing in their development is crucial for long-term success. 

As they gain experience, they become the firm's next leaders and continue its legacy. Their energy, ambition, and willingness to learn can invigorate a firm and contribute significantly to its projects and reputation.