NSI Engineering is a woman-veteran owned small (micro) business enterprise, a certified DBE, and a certified DVBE firm, specializing in quality management and systems engineering. For over 20 years, NSI Associates have provided QA oversight, QA management, and systems engineering services on rail transit and highway construction projects in California, primarily in Northern California. These projects include the California High Speed Rail project, the Transbay Transit Center Project, Bay Area Rapid Transit (BART) design and construction projects, and highway construction projects.