Remote .NET Lead — Modernization & Cloud CI/CD

ATAIN; United States; Remote; USD 120,000 - 190,000; Full time

Job summary

ATAIN seeks an experienced Lead .NET Developer to drive modernization of legacy .NET applications and migration to .NET 8/10. This remote role requires 8+ years in C#/.NET, Azure, and DevOps, with strong SQL skills and performance optimization.

You will lead development on brownfield projects, design scalable solutions, and collaborate with architects, QA, and DevOps to deliver high-quality software across on-prem and cloud environments.

Qualifications

• 8+ years of overall software development experience.
• Strong hands-on experience with C# and the .NET ecosystem.
• Demonstrated experience in .NET application upgrades and modernization.
• Experience working on brownfield development projects.
• Exposure to Azure, DevOps, CI/CD, and hybrid deployment environments.
• Ability to work independently as an Individual Contributor (IC).
• Strong hands-on experience in C#, .NET Core, and modern .NET development.
• Practical experience upgrading existing applications to .NET 8 and/or .NET 10, including dependency compatibility, breaking changes, and application modernization.
• Experience working with legacy applications, understanding existing codebases, and implementing enhancements without disrupting existing functionality.
• Hands-on experience deploying or supporting .NET applications on Microsoft Azure.
• Experience with build and release pipelines, automated deployments, and version control using Azure DevOps and Git.
• Experience deploying and troubleshooting applications in both on-premises and cloud environments.
• Good understanding of SQL queries, joins, stored procedures, and query optimization.
• Strong programming fundamentals, debugging skills, and the ability to write production-quality code.

Responsibilities

• Develop, maintain, and enhance enterprise applications using C#, .NET, and related technologies.
• Upgrade and modernize existing .NET applications, including migration to .NET 8 and .NET 10.
• Analyze legacy codebases, identify technical dependencies, and implement modernization strategies.
• Work on brownfield projects involving existing applications, integrations, and complex codebases.
• Write clean, scalable, maintainable, and efficient code following established coding standards and best practices.
• Troubleshoot and resolve application defects, performance bottlenecks, and production issues.
• Develop and optimize SQL queries and work with relational databases.
• Deploy and support applications across on-premises infrastructure and cloud environments.
• Work with Microsoft Azure services for application hosting, configuration, monitoring, and deployment.
• Implement and maintain CI/CD pipelines and support automated build and release processes using DevOps tools.
• Collaborate with architects, QA engineers, DevOps teams, and other developers to deliver high-quality solutions.

Skills

C# & .NET

Azure cloud

DevOps practices

CI/CD pipelines

SQL & Databases

Performance optimization

Independent IC

Legacy modernization

Debugging

Tools

Azure DevOps

Git

Job description

ATAIN seeks an experienced Lead .NET Developer to drive modernization of legacy .NET applications and migration to .NET 8/10. This remote role requires 8+ years in C#/.NET, Azure, and DevOps, with strong SQL skills and performance optimization.

You will lead development on brownfield projects, design scalable solutions, and collaborate with architects, QA, and DevOps to deliver high-quality software across on-prem and cloud environments.