E5 Systems | 491 followers on LinkedIn. E5 Systems is a US technology service company providing innovative solutions with web-based technologies to design, develop, maintain and transform break-through and legacy applications. E5 Systems is one the first American companies to combine the strengths of the US onshore project leadership with the deep technology skills of China. We're a Microsoft Gold Certified Partner with Competencies in Custom Development Solutions, Web Development and Data Management Solutions.