Senior Software Engineer I

Requisition Number: 2353818
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.
Primary Responsibilities:

• Fullstack .Net development
• Design, develop, and maintain web/systems applications and REST API's
• Participate in peer-reviews of solution designs and related code
• Collaborate with product managers, designers, business analysts and other developers to define and implement innovative solutions
• Assist in the development of user stories and task estimates
• Adhere to high-quality development principles while delivering solutions on-time and on-budget
• Troubleshoot and debug applications to optimize performance
• Identify and encourage areas for growth and improvement within the team
• Collaborate with other software developers, business analysts and software architects to plan, design, develop, test, and maintain web- and desktop-based business applications built on Microsoft technologies
• Prepare reports, manuals and other documentation on the status, operation and maintenance of software
• Develop, refine, and tune integrations between applications
• Analyze and resolve technical and application problems. Assess opportunities for application and process improvement and prepare documentation of rationale to share with team members and other affected parties
• Involved through the entire software development lifecycle of analysis, design, coding, testing, implementation and support
• Continually grow personal skillset and knowledge base with independent research
• 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:

• 7+ years building web applications and REST APIs using C#.NET
• 7+ years of hands-on experience with front end frameworks (e.g., React, Angular), CSS, HTML, and modern JavaScript/TypeScript
• Hands-on experience spanning the full software development lifecycle (analysis → design → coding → testing → implementation → support), Agile/Scrum ceremonies, peer code reviews, and CI/CD (Azure DevOps/GitHub Actions)
• Experience troubleshooting and debugging production issues, building diagnostics/instrumentation, and participating in on call rotations
• Experience with test automation (xUnit/NUnit, Playwright/Selenium) and pipeline quality gates (static analysis, SCA, SAST/DAST)
• Proficiency with solution design, secure coding, unit/integration testing, and performance optimization across the stack
• Understanding and experience applying solid engineering design principles. Proficient in object-oriented programming design and Design patterns
• Proven excellent communication, critical thinking, and problem solving; habit of identifying improvement opportunities and encouraging team growth
• Proven ability to produce clear technical documentation (architecture, API specs, runbooks) and status reports; strong collaboration with product managers, BAs, designers, and other developers

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.
Optum is a drug-free workplace. © 2026 Optum Global Solutions (Philippines) Inc. All rights reserved.