What We Do n-Link works strategically and tactically at the CIO level and key departmental levels at several Federal Agencies creating measurable value every day. Our highly-trained and certified resources have expertise in: Data and Systems Architecture Program Management (i.e., PMI-certification, Six Sigma) Security Solutions - Identity & Access Management, eAuthentication, HSPD-12 Development & Programming (i.e., JAVA, C#, C++, ASP, GIS Arc Info/Map) Health Information Technology Network Security Operations Management Independent Verification & Validation Network / Systems Engineering & Integration Legacy Systems Support .