Senior .NET Developer

We are seeking an experienced Senior .NET Developer to support mission-critical licensing and enforcement applications. This individual will be responsible for application development, troubleshooting, system enhancements, integrations, data migration activities, and ongoing production support. The role requires close collaboration with business stakeholders and technical teams to maintain and improve public-facing and internal systems. This is a hybrid position based in New York City with occasional on-site attendance as required by the project manager., * Develop, maintain, and enhance .NET web applications

• Troubleshoot application defects and production issues
• Design and implement new application functionality
• Support authentication and security enhancements
• Integrate applications with internal and external systems
• Perform data migration and database support activities
• Support API development and system integrations
• Assist with application modernization initiatives
• Conduct testing, deployment, and release activities
• Create technical documentation and knowledge transfer materials
• Support CI/CD pipelines and development operations
• Collaborate with business users and project stakeholders
• Ensure application stability, performance, and reliability

Do you have experience in Web applications?, * 5+ years developing enterprise applications using .NET technologies

• 5+ years of ASP.NET MVC development
• 5+ years supporting production web applications
• 5+ years working with Microsoft SQL Server
• Experience with SSIS and SSRS
• Experience with HTML, CSS, JavaScript, and responsive web development
• Experience troubleshooting complex application issues
• Experience with application integrations and data migration
• Experience with Azure DevOps Boards and Pipelines
• Strong analytical and problem-solving abilities
• Excellent written and verbal communication skills
• Experience supporting secure authentication and authorization systems
• Experience working with APIs and web services

Optional / Preferred Skills

• Microsoft Azure experience
• Cloud migration experience
• REST API design and development
• Agile/Scrum experience
• DevOps best practices
• Government or public sector experience
• Enterprise application support experience
• Workflow/case management platforms
• SharePoint integrations
• Microsoft Graph API experience
• Identity management and authentication expertise
• SQL Server certifications
• PowerShell scripting
• Performance tuning and optimization
• Application security remediation
• Microservices architecture exposure

Experience:

• .NET Development: 7 years (Preferred)
• ASP.NET MVC Web Development: 5 years (Preferred)
• Microsoft SQL Server Development: 5 years (Preferred)
• Application Support & Production Troubleshooting: 5 years (Preferred)
• API Development & Integrations (REST/Web Services): 5 years (Preferred)
• Azure DevOps & CI/CD Pipelines: 4 years (Preferred)
• HTML, CSS, JavaScript: 5 years (Preferred)
• Data Migration & System Integration: 4 years (Preferred)
• Authentication (OAuth, SSO, Microsoft Graph): 3 years (Preferred)
• Government or Enterprise Application Support: 3 years (Preferred)