Overview Engineering Systems Inc. (ESi) is an engineering and scientific investigation and analysis firm committed to providing clear answers to the most challenging technical problems. Our technical expertise, practical experience, technological resources, and extensive diagnostic, analytical, and physical testing capabilities empower us to provide our clients with the most comprehensive and efficient solutions across dozens of industries. Our team handles large and small-scale projects with diligence, accuracy, and discretion, and our experts are well-known for their professionalism, precision, response time, and scientific and academic contributions to the industries they serve.