Sr Full Stack Engineer - .Net, Microservices, React or Angular

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 Senior Full Stack Engineer, you will contribute across the entire software development lifecycle, from conception and design to deployment and operation.
Primary Responsibilities:

• Full Lifecycle Development: Engage in end-to-end software development, including gathering requirements, designing architecture, writing high-quality code, testing, deploying, and maintaining applications in production
• Back-End Engineering: Develop highly scalable and efficient back-end microservices using modern .NET frameworks, focusing on performance, reliability, and security
• Front-End Engineering: Build responsive, intuitive, and high-performance user interfaces using modern front-end frameworks
• Cloud Infrastructure & DevOps: Utilize cloud platforms and best practices to manage infrastructure, implement robust CI/CD pipelines, and ensure smooth deployment and operations
• Collaboration & Mentorship: Work closely with cross-functional teams (product managers, designers, other engineers) to deliver impactful features. Provide mentorship and code review feedback to junior engineers
• Innovation & Problem Solving: Proactively identify performance bottlenecks, debug complex issues across the stack, and introduce new technologies or methodologies to improve engineering efficiency and product quality
• 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

The ideal candidate possesses a solid technical foundation, a problem-solving mindset, and practical experience in building enterprise-grade applications using the specified tech stack.
Required Qualifications:

• Bachelor's degree in Computer Science, Engineering, or a related field, or equivalent industry experience
• 5+ years of professional experience in full-stack software development
• Architecture: Proven experience building and working within microservices architectures
• Development Methodologies: Solid understanding of Agile development methodologies (Scrum, Kanban) and DevOps practices
• Problem Solving: Proven solid analytical and problem-solving skills with the ability to troubleshoot complex, distributed systems
• Technical Skills & Tech Stack knowledge:
  • Cloud Technologies: Hands-on experience deploying and managing applications on a major cloud platform such as AWS, Azure, or GCP
  • Cloud Native & DevOps Tools: Experience with Docker and container orchestration (Kubernetes preferred), CI/CD pipelines (e.g., Jenkins, Azure DevOps, GitLab CI), and infrastructure-as-code principles
  • Databases & APIs: Solid experience with relational databases (e.g., SQL Server, PostgreSQL) and NoSQL databases. Experience designing and consuming robust RESTful APIs
  • Back-End: Expertise in the .NET tech stack, including C#, .NET Core, ASP.NET Core, and Entity Framework
  • Front-End: Proficiency in modern front-end technologies: JavaScript/TypeScript, HTML5, CSS3, and at least one major framework (e.g., React, Angular, or Vue.js)
  • Testing: Commitment to quality assurance, including experience with unit testing, integration testing, and automated testing frameworks

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.
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