Senior Software Engineering Lead Dot Net

Optum is a global organization that delivers care, aided by technology to help millions of people live healthier lives. The work you do with our team will directly improve health outcomes by connecting people with the care, pharmacy benefits, data and resources they need to feel their best. Here, you will find a culture guided by inclusion, talented peers, comprehensive benefits and career development opportunities. Come make an impact on the communities we serve as you help us advance health optimization on a global scale. Join us to start Caring. Connecting. Growing together.
We're looking for a .NET Developer with strong backend expertise in .NET / .NET Core and hands-on experience with Azure or AWS and CI/CD (GitHub Actions). You'll build secure, scalable REST APIs, integrate modern React or Angular or Next.js frontends, and work with SQL Server for data persistence. Familiarity with GitHub Copilot and AI-assisted development workflows is a plus - we encourage developers to be AI-powered users for productivity and code quality.
Primary Responsibilities:

• Design, develop, and maintain backend services using .NET / .NET Core (Web API)
• Build and integrate RESTful APIs with authentication/authorization (JWT/OAuth2)
• Implement modern web UIs using React or Angular (SSR/SSG as needed)
• Design schemas, write performant queries, and optimize data access with SQL Server and Entity Framework Core
• Deploy and operate applications on Microsoft Azure (App Service, Functions, Storage, Key Vault, Azure SQL, API Management)
• Set up and maintain CI/CD pipelines using GitHub Actions (build, test, security scan, deploy)
• Follow clean architecture, SOLID principles, and automated testing (unit/integration)
• Monitor and improve performance, reliability, and security (logging, tracing, metrics)
• Use GitHub Copilot and responsible AI practices to accelerate development while maintaining code quality and security
• Collaborate cross-functionally with Product, QA, and DevOps; participate in code reviews and agile ceremonies
• Comply with the terms and conditions of the employment contract, company policies and procedures, and any and all directives (such as, but not limited to, transfer and/or re-assignment to different work locations, change in teams and/or work shifts, policies in regards to flexibility of work benefits and/or work environment, alternative work arrangements, and other decisions that may arise due to the changing business environment). The Company may adopt, vary or rescind these policies and directives in its absolute discretion and without any limitation (implied or otherwise) on its ability to do so

Required Qualifications:

• AI User: Experience using GitHub Copilot or similar AI tools responsibly in development
• Skills:
  • Backend: .NET, .NET Core (C#), ASP.NET Core Web API, Entity Framework Core
  • Frontend: React or Angular (TypeScript preferred), component/state management
  • Cloud: Azure (App Service/Functions, Azure SQL, Storage, Key Vault, API Management)
  • Database: SQL Server (schema design, indexing, query optimization)
  • DevOps: GitHub Actions, CI/CD, environments, secrets management, artifact handling
  • APIs: REST design, OpenAPI/Swagger, JSON, pagination, error handling
  • Testing: xUnit/NUnit/MSTest; Jest/RTL for React; mocking frameworks
  • Version Control: Git, GitHub workflows (PRs, code reviews, branching)
  • Security: OWASP awareness, secure coding, identity/auth in Azure

Preferred Qualifications:

• Undergraduate degree or equivalent experience
• Full stack engineering Lead(JAVA, .NET, React, Angular), AI/ML development experience, Big Data, Team guidance and mentorship experience
• AI Integration: Experience consuming AI services (e.g., Azure OpenAI) ethically and securely
• Skills:
  • Next.js advanced: SSR, SSG, ISR, route handlers, middleware
  • Containerization: Docker; Azure Container Apps/AKS
  • Infra as Code: Bicep/Terraform; ARM templates
  • Observability: Azure Monitor, Application Insights, distributed tracing
  • Messaging/Integration: Azure Service Bus/Event Grid
  • Performance: Caching (Redis), async patterns, high-throughput API design
  • Security: OAuth2/OIDC, Azure Entra ID (AAD), API scopes/permissions

At UnitedHealth Group, our mission is to help people live healthier lives and make the health system work better for everyone. We believe everyone-of every race, gender, sexuality, age, location and income-deserves the opportunity to live their healthiest life. Today, however, there are still far too many barriers to good health which are disproportionately experienced by people of color, historically marginalized groups and those with lower incomes. We are committed to mitigating our impact on the environment and enabling and delivering equitable care that addresses health disparities and improves health outcomes - an enterprise priority reflected in our mission.