A Legacy of Technical Expertise and Leadership. Over the last 55 years, GZA has thrived by helping our clients meet the challenges presented by the times. The global challenges facing our clients today are as great as, if not greater than, those of the last 55 years. Because GZA experts are trained across disciplines, clients benefit from the knowledge and experience of all of our staff, and resources are in-house and available for every project at any time. With the ability to manage unpredictability, remain nimble, and mobilize quickly, GZA responds to client inquiries with urgency, sensitivity, knowledge and value, while remaining mindful of project costs and schedule. Excelling as a multi-disciplinary, multi-office firm of proactive, bright, and dedicated people, we provide value to our clients and our profession.