Our Client  is seeking an experienced Senior .NET Developer with Salesforce integration experience for an onsite contract role. This position focuses on developing and supporting enterprise applications using Microsoft technologies, integrating backend systems with Salesforce, and maintaining UI and batch processing components. The ideal candidate is hands on, technically strong, and comfortable working onsite with cross functional enterprise teams.

Key Responsibilities:

• Design, develop, and maintain .NET/.NET Core applications and APIs
• Build and support Salesforce integrations using REST and SOAP APIs
• Develop and maintain WPF desktop applications
• Support and enhance SIS batch jobs and scheduled processing workflows
• Work extensively with MS SQL Server (queries, stored procedures, performance tuning)
• Implement secure authentication and authorization (OAuth 2.0, JWT, API keys)
• Collaborate onsite with Salesforce developers, architects, and integration teams
• Apply enterprise integration patterns (synchronous, asynchronous, event driven)
• Troubleshoot and resolve application, integration, and data issues
• Ensure code quality through reviews, testing, and adherence to standards
• Create and maintain technical documentation