Scientific Systems and Software International (SSSI) | 251 followers on LinkedIn. Where Federal Mission Experience Meets Applied AI | Government IT, Cloud, Cybersecurity & Intelligent Automation | Founded in 1985, Scientific Systems and Software International (SSSI) operates at CMMI Level 3 for Services and Development and follows ISO 9001:2015 standards, developing and deploying a wide range of information technology solutions across the federal government including, Program Management, SharePoint support services, Software Development, IT Security Assessments, Software Testing, IV&V, and Operation & Maintenance support services including Help Desk and Training. SSSI also leverages contract vehicles such as GSA IT 70 and others. SSSI has served numerous federal clients including: Department of Labor (BLS, ETA, MSHA) U.S.