Senior Software Engineer

UnitedHealth Group•Minnetonka, MN

4d•$91,700 - $163,700•Remote

About The Position

We are seeking a Senior Software Engineer to design, build, and support scalable backend services and APIs that power critical business capabilities across Optum Technology. This role is responsible for delivering high-quality software solutions, collaborating across product and engineering teams, and helping evolve our platforms through strong technical leadership and sound engineering practices. The ideal candidate is a hands-on engineer who enjoys solving complex business problems, building reliable systems, mentoring teammates, and driving continuous improvement across the software development lifecycle using modern tech-forward delivery practices.

Requirements

7+ years of professional software engineering experience
5+ years of backend development experience using .NET and C#
4+ years of equivalent software development experience
3+ years of experience designing, building, and consuming RESTful APIs
2+ years of enterprise cloud development experience, AWS preferred
2+ years of experience working with relational SQL or NoSQL databases
2+ years of experience with modern CI/CD pipelines and source control systems, such as Git or GitHub Actions

Nice To Haves

Bachelor's degree in Computer Science, Engineering, or a related field
Experience working with NoSQL databases, specifically Amazon DynamoDB
Experience with ASP.NET Core framework and building microservices architectures
Experience designing and implementing event-driven architecture solutions
Hands-on experience with cloud infrastructure on AWS
Experience with containerization technologies such as Docker and orchestration platforms like Kubernetes
Experience implementing observability and monitoring practices across enterprise-scale platforms
Experience and proficiency using AI-assisted development tools, such as GitHub Copilot or generative AI platforms, to streamline coding workflows, testing, and documentation
Experience working within large-scale enterprise environments supporting high-availability, business-critical applications
Experience with Infrastructure as Code, such as Terraform
Proven track record of mentoring junior and mid-level engineers and leading technical design discussions

Responsibilities

Design, develop, test, and maintain backend services and REST APIs using .NET and C#
Partner with product, business, and engineering stakeholders to translate business needs into scalable, resilient technical solutions
Build reusable services and components that support multiple products and business capabilities
Take ownership of software solutions throughout the development lifecycle, including production support and continuous improvement
Contribute to architecture decisions, technical designs, and engineering standards across the team
Lead code reviews and promote best practices related to quality, performance, security, and maintainability
Use enterprise-approved AI tools to streamline software development workflows, automate tasks, write tests, and drive continuous delivery improvements
Troubleshoot production issues, perform root-cause analysis, and drive long-term technical remediation
Evaluate emerging technologies, tools, and engineering practices to inform solution design and strategic innovation
Mentor engineers through technical guidance, knowledge sharing, and hands-on collaboration within an Agile delivery framework