GSE Systems, Inc. (GSE) is a performance improvement company. The Company operates in two segments: Performance Improvement Solutions and Staff Augmentation. Performance Improvement Solutions segment offers simulation, training and engineering products and services. Staff Augmentation segment provides specialized workforce solutions to the nuclear industry, working at its clients' facilities. The Company's subsidiaries include GSE Performance Solutions, Inc.; GSE Power Systems, AB, a Swedish corporation; GSE Engineering Systems (Beijing) Co. Ltd., a Chinese limited liability company; GSE Systems, Ltd., a Scottish limited liability company; EnVision Systems (India) Pvt. Ltd., an Indian limited liability company, and Hyperspring, LLC, an Alabama limited liability company. The Company has a 50% interest in IntelliQlik, LLC, a Delaware limited liability company, and a 50% interest in General Simulation Engineering RUS LLC, a Russian closed joint-stock company.