An organization wants to know not only that you'll be a competent and professional engineer but that you can also build long-lasting, positive professional relationships with co-workers, contractors, and stakeholders that will benefit the company. It's important to show an interest in contributing to the success of the company and not just applying your technical skills to complete your tasks. Review the company website, what they do, their projects, and their clientele, and be prepared to discuss how you will contribute and why you think relationship-building is important.