Lead Dotnet Developer

Atain; Gurugram District; On-site; INR 3,000,000 - 5,000,000; Full time

Job summary

Atain seeks an experienced Lead .NET Developer with 8–12 years of hands-on software development in C# and the .NET ecosystem. The role focuses on modernizing legacy .NET apps, migrating to .NET 8/10, and delivering brownfield projects across on‑prem and cloud environments.

Responsibilities include upgrading applications, optimizing performance, and deploying via CI/CD pipelines. Strong Azure, DevOps, and SQL skills are required to drive successful deployments.

Qualifications

• 8–12 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).
• C# and .NET: Strong hands‑on experience in C#, .NET Core, and modern .NET development.
• NET Upgradation: Practical experience upgrading existing applications to .NET 8 and/or .NET 10, including dependency compatibility, breaking changes, and application modernization.
• Brownfield Development: Experience working with legacy applications, understanding existing codebases, and implementing enhancements without disrupting existing functionality.
• Azure: Hands‑on experience deploying or supporting .NET applications on Microsoft Azure.
• DevOps and CI/CD: Experience with build and release pipelines, automated deployments, and version control using tools such as Azure DevOps and Git.
• Deployment: Experience deploying and troubleshooting applications in both on‑premises and cloud environments.
• SQL: Good understanding of SQL queries, joins, stored procedures, and query optimization.
• Coding and Problem‑Solving: 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 as required.
• 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 ecosystem

Azure

DevOps

CI/CD

SQL

Problem-solving

Individual Contributor

.NET Core

Hybrid deployment

Tools

Azure DevOps

Git

Job description

We are looking for an experienced Lead .NET Developer with 8–12 years of hands‑on software development experience in C# and the .NET ecosystem. The ideal candidate will have strong expertise in modernizing and upgrading existing applications, particularly migrating legacy .NET applications to .NET 8 and .NET 10.

The role involves working on brownfield projects, enhancing existing systems, improving application performance, and supporting deployments across on-premises and cloud environments. The candidate should have practical experience with Azure cloud services, DevOps practices, CI/CD pipelines, and SQL.

Key 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 as required.
• 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.

Required Technical Skills

• 8–12 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).
• C# and .NET: Strong hands‑on experience in C#, .NET Core, and modern .NET development.
• .NET Upgradation: Practical experience upgrading existing applications to .NET 8 and/or .NET 10, including dependency compatibility, breaking changes, and application modernization.
• Brownfield Development: Experience working with legacy applications, understanding existing codebases, and implementing enhancements without disrupting existing functionality.
• Azure: Hands‑on experience deploying or supporting .NET applications on Microsoft Azure.
• DevOps and CI/CD: Experience with build and release pipelines, automated deployments, and version control using tools such as Azure DevOps and Git.
• Deployment: Experience deploying and troubleshooting applications in both on‑premises and cloud environments.
• SQL: Good understanding of SQL queries, joins, stored procedures, and query optimization.
• Coding and Problem‑Solving: Strong programming fundamentals, debugging skills, and the ability to write production‑quality code.

About Atain:

(http://www.atain.com)

Atain is an enterprise orchestration partner that aligns people, processes, and platforms with AI to redefine work and deliver assured outcomes. It is enabled through the SMART Framework driving superior metrics with AI‑redefined work, the TechBud platform, a GenAI foundation built on zero‑pilot architecture and ISO 42001 standards, a robust partner ecosystem, and deep domain expertise. Atain's Unified Hub continuously senses, predicts, and re‑orchestrates work across people, processes, and platforms to deliver assured outcomes. The centers of skill and scale combine deep expertise with AI to deliver assured outcomes. For more information, visit www.atain.com

Atain is ISO 27001:2013, CMMI SVC Level 5 and ISAE‑3402 compliant for IT, and COPC Certified v6.0, ISO 27001:2013 and PCI DSS 3.2 certified for BPO processes. The organization follows Six Sigma rigor for process improvements.

It is our policy to provide equal employment opportunities to all individuals based on job‑related qualifications and ability to perform a job, without regard to age, gender, gender identity, sexual orientation, race, color, religion, creed, national origin, disability, genetic information, veteran status, citizenship or marital status, and to maintain a non‑discriminatory environment free from intimidation, harassment or bias based upon these grounds.