Senior .NET Engineer (Platform Team) at Cigna

What You’ll Do

• Design, build, and maintain backend services and APIs using .NET (ASP.NET Core)
• Develop and optimize data access layers using Entity Framework Core
• Own services end-to-end: architecture, development, testing, deployment, and monitoring
• Build and maintain CI/CD pipelines and automated deployment processes
• Implement and manage Infrastructure-as-Code (IaC) for application and environment provisioning
• Work extensively with on-premises Windows Server environments, including deployment and runtime management on virtual machines
• Collaborate with product and delivery teams to create reusable technical solutions
• Contribute to improving engineering standards, automation, and system reliability

What You’ll Bring (Required)

• Bachelor’s degree in IT or related field.
• 5–7+ years of experience in software engineering, with strong backend focus
• Deep hands-on experience with .NET technologies, including: ASP.NET Core (Web APIs) and Entity Framework Core
• Proven experience building and maintaining production-grade backend systems
• Hands-on DevOps experience, including: CI/CD pipeline implementation and management and Infrastructure-as-Code (IaC) using tools such as Terraform, ARM, Bicep, or similar
• Solid experience working in on-premises environments (Windows Server)
• Working knowledge of Agile practices (e.g., sprint ceremonies, backlog refinement, stand-ups)
• Experience with Git-based version control

Nice to Have

• Experience with hybrid or cloud platforms (e.g., Microsoft Azure)
• Exposure to SAFe (Scaled Agile Framework)
• Experience building shared platforms or internal developer tooling

Key Expectations

• Strong engineering depth in .NET combined with practical DevOps/IaC capability
• Comfortable working across application code and infrastructure layers
• Ability to deliver in structured Agile environments
• Experience supporting and evolving on-premise enterprise systems