Software Engineer - C# / .NET + Angular+ Cloud

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. 

As a Software Engineer, we are seeking individuals who have a passion for technology, developing scalable solutions, and providing thought leadership in AI-enabled development, modern web technologies, and enterprise API ecosystems.

You will be a key hands-on contributor within a team of talented software engineers at Optum, supporting the Nevada Market. We are responsible for developing, maintaining, and supporting an application ecosystem that enables a best-in-class healthcare experience.

You will work across a large technology landscape including APIs, and modern Angular-based frontends, partnering with engineers and business stakeholders to deliver impactful solutions.

Your work will directly influence internal operational efficiency, while also providing opportunities to grow your career within an industry leader driving innovation in healthcare technology.

Primary Responsibilities:

• Design, develop, test, and deploy scalable applications, APIs, and AI-enabled solutions that meet business and technical requirements 
• Build and integrate RESTful Web APIs, MCP-aligned services.
• Apply AI-assisted development practices, including prompt engineering, model integration, and agentic workflows
• Collaborate with lead engineers to define modern architecture patterns (cloud-native, API-first, AI-enabled)
• Partner with Business Analysts to refine requirements and provide accurate estimates
• Translate business requirements into secure, scalable, and maintainable technical solutions
• Contribute to prompt libraries, reusable AI components, and structured workflows supporting enterprise AI adoption [SE Managem...- 5/7/2026 | Outlook]
• Ensure code quality through secure coding practices, input validation/sanitization, and adherence to compliance standards
• Lead or contribute to the delivery of complex features or projects, including coordination across team members
• Support CI/CD pipelines, automated testing, and DevOps practices
• Participate in production support, monitoring, and incident resolution, meeting SLA expectations
• Conduct code reviews and mentor junior engineers on best practices in AI, APIs, and modern web development
• Drive adoption of operational excellence practices across build, deploy, monitor, and support phases
• 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:

• Bachelor's degree in Computer Science, Engineering, or equivalent experience
• 5+ years of hands-on development experience with C# / .NET (preferably .NET 6/8+)
• 5+ years of experience building RESTful APIs and Web Services
• 5+ years of experience with Angular (modern versions) and front-end web development
• 3+ years of experience working with cloud platforms (Azure preferred)
• Solid experience in Web API design, architecture, and API gateway integration
• Solid experience with SQL Server or Oracle databases, including design and optimization
• Experience with AI-assisted development tools, prompt engineering, or integrating AI services into applications
• Experience with secure application development (OAuth2, JWT, input validation, API security best practices)
• Experience with CI/CD pipelines (Azure DevOps, GitHub, etc.)
• Experience leading features, mentoring engineers, or guiding small teams
• Solid understanding of SDLC, Agile, and DevOps practices
• Proven solid analytical, troubleshooting, and problem-solving skills
• Proven excellent communication and collaboration skills

Preferred Qualifications:

• Experience with Model Context Protocol (MCP) or AI agent integration patterns
• Experience designing AI-powered applications (LLMs, embeddings, orchestration layers)
• Hands-on experience with prompt engineering, prompt tuning, and reusable prompt frameworks
• Experience implementing token validation, security hardening, and API governance
• Azure services such as:  
  • App Services
  • Azure Functions
  • API Management (APIM)
• Experience with modern UI/UX patterns and responsive web design
• Healthcare industry experience
• Familiarity with observability tools (logging, tracing, monitoring)

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.