Senior .NET Developer

This position is listed on behalf of a partner company, who manages all applications and next steps. Our partner is looking for a Senior .NET Developer based in United States. This is a senior, hands-on engineering opportunity focused on building and operating a high-availability enterprise application in a secure AWS GovCloud environment.You will take technical ownership of a complex production codebase and contribute across architecture, development, deployment, troubleshooting, and continuous improvement.The platform uses a cloud-native microservices architecture processing millions of messages each month.You will work with modern .NET, PostgreSQL, RabbitMQ, AWS SQS, Docker, Kubernetes, Rancher, and AWS cloud services.The role also embraces AI-assisted software development, requiring strong engineering judgment to validate AI-generated code for security, quality, performance, and maintainability.You will collaborate closely with technical leads, operations, and engineering teams while mentoring developers and helping establish strong engineering practices.This position is well suited to an experienced developer who thrives on complex distributed systems, production ownership, and mission-critical Federal technology.