Senior Software Engineer

Worky; Richardson (TX); On-site; USD 91,700 - 163,700; Full time

Benefits offered by this job

Comprehensive benefits package

Incentive and recognition programs

Equity stock purchase

401k contribution

Job summary

UnitedHealth Group is seeking a Senior Developer in Richardson, Texas to design, build, and support API solutions using the .NET technology stack. This role involves collaborating with teams to deliver maintainable software and participating in Agile practices. The candidate should have 8+ years of software development experience, strong API focus, and a background in .NET, along with skills in database design and testing. The position offers telecommuting flexibility and a comprehensive benefits package.

Qualifications

• 8+ years of professional software development experience with strong backend/API focus.
• 5+ years of experience with the .NET technology stack, including C#, ASP.NET MVC.
• 5+ years of experience with database design and writing complex T-SQL queries.

Responsibilities

• Design, develop, and maintain APIs using .NET Core.
• Collaborate with product owners to evaluate requirements.
• Develop and maintain unit and integration tests.

Skills

Backend/API development

.NET technology stack

Database design

Unit testing

SOLID principles

Agile methodologies

Tools

SQL Server

T-SQL

Job description

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 diversity and inclusion, talented peers, comprehensive benefits and career development opportunities. Come make an impact on the communities we serve as you help us advance health equity on a global scale. Join us to start

Caring. Connecting. Growing together.

The Senior Developer designs, builds, and supports scalable internal and external-facing API solutions using the .NET technology stack. This role partners with product owners, users, and engineering peers to deliver secure, reliable, and maintainable software in an Agile environment, with strong focus on architecture, testing, performance, and production support.

You will enjoy the flexibility to telecommute* from anywhere within the U.S. as you take on some tough challenges.

Primary Responsibilities

• Design, develop, and maintain highly scalable internal and external-facing APIs using .NET Core / ASP.NET Web API
• Collaborate with product owners and users to evaluate requirements by analyzing business needs, system workflows, data points, and integration boundaries with other enterprise applications
• Translate requirements into well-structured technical designs, API contracts, and implementation plans with attention to scalability, performance, and maintainability
• Develop and maintain unit and integration tests for new features, and add tests to legacy code where necessary to reduce risk and improve coverage
• Ensure code, configurations, and deployments support scalability, resiliency, and operational readiness in production environments
• Support production users by monitoring services, investigating incidents, and resolving ticketed issues; provide root-cause analysis and preventative fixes
• Perform code reviews and contribute to defining and enforcing coding standards, best practices, and consistent design patterns across the team
• Participate across the full development lifecycle—from concept and design through implementation, testing, deployment, and post-release support
• Actively participate in Agile ceremonies (daily standups, planning, refinement, retrospectives) to communicate progress, risks, and dependencies
• Continuously improve technical skills by staying current with modern development tools, programming techniques, and engineering practices

You'll be rewarded and recognized for your performance in an environment that will challenge you and give you clear directions on what it takes to succeed in your role as well as provide development for other roles you may be interested in.

Required Qualifications

• 8+ years of professional software development experience with strong backend/API focus
• 5+ years of experience with the .NET technology stack, including C#, ASP.NET MVC, and ASP.NET Web API / .NET Core
• 5+ years of experience with database design and writing complex T‑SQL queries (SQL Server or equivalent)
• 5+ years of experience writing unit tests and integration tests and maintaining testable code
• 5+ years of experience and hands‑on application of SOLID principles and clean coding practices
• 5+ years of experience with modern web application and service design patterns such as Clean Architecture and/or Vertical Slice Architecture, event‑driven design, and asynchronous processing
• 5+ years of experience working in an Agile environment using Scrum or Kanban

Preferred Qualifications

• Experience with observability/monitoring tools and production support practices (alerting, dashboards, log analysis
• Experience designing secure APIs (authentication/authorization, OWASP considerations, rate limiting, input validation
• Familiarity with CI/CD pipelines and automated quality gates

Soft Skills

• Self‑motivated, able to work in minimal direction, and able to manage multiple priorities effectively
• Strong analytical, problem‑solving, and critical thinking skills
• Excellent communication skills with the ability to explain technical concepts to both technical and non‑technical audiences

*All Telecommuters will be required to adhere to UnitedHealth Group's Telecommuter Policy.

Pay is based on several factors including but not limited to local labor markets, education, work experience, certifications, etc. In addition to your salary, we offer benefits such as, a comprehensive benefits package, incentive and recognition programs, equity stock purchase and 401k contribution (all benefits are subject to eligibility requirements). No matter where or when you begin a career with us, you'll find a far‑reaching choice of benefits and incentives. The salary for this role will range from $91,700 to $163,700 annually based on full‑time employment. We comply with all minimum wage laws as applicable.

Pursuant to the San Francisco Fair Chance Ordinance, we will consider for employment qualified applicants with arrest and conviction records.

Application Deadline

This will be posted for a minimum of 2 business days or until a sufficient candidate pool has been collected. Job posting may come down early due to volume of applicants.

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.

UnitedHealth Group is an Equal Employment Opportunity employer under applicable law and qualified applicants will receive consideration for employment without regard to race, national origin, religion, age, color, sex, sexual orientation, gender identity, disability, or protected veteran status, or any other characteristic protected by local, state, or federal laws, rules, or regulations.

UnitedHealth Group is a drug‑free workplace. Candidates are required to pass a drug test before beginning employment.

#RPO #GREEN