Our Charlestown, Massachusetts client is looking for a full-time, on-site, contract position; a Senior-level C# ASP.NET Developer to develop and support web-based applications as a member of a growing team. You must be a Senior Developer experienced in .NET 2.0, 3.5, and 4.0 with C# and SQL Server 2008. Ideally, you will have had experience with rules engines using complex logic. Responsibilities Include: Modify existing or write new program code of moderate to high complexity and scope Work cooperatively with other team members in an agile/scrum environment Play a leading role in the project and project team The successful Developer applicant will possess the following requirements (items are required unless noted otherwise): Minimum ten years of software development experience with the last five years focused on developing web applications using ASP.NET and C# Minimum five years of experience as a Lead Developer in a team of five or more Proficiency with SQL, functions, and stored procedures Ability to work well in a team environment Proven success developing multi-user web applications through full SDLC Familiarity with Service Oriented Architecture Solid understanding of IIS, ASP.NET, JavaScript, and AJAX A BA or BS Degree Excellent written and verbal English language skills