Senior Software Engineer II

Requisition Number: 2368408
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:

• Design and architect scalable voice/IVR and conversational AI systems using AWS and LLM-based intent engines
• Develop and enhance intelligent intent detection using LLMs (Bedrock/OpenAI) integrated with AWS Lex or custom pipelines
• Build and manage backend services and APIs using AWS (Lambda, API Gateway, DynamoDB, SQS)
• Implement end-to-end IVR solutions including call routing, prompt design, fallback strategies, and AI-driven responses
• Lead cloud architecture decisions ensuring high availability, scalability, and cost optimization
• Monitor applications using AWS CloudWatch; create dashboards, alerts, and log analysis for proactive issue resolution
• Integrate IVR systems with telephony platforms and enterprise systems
• Optimize system performance for latency, accuracy, and reliability in real-time voice interactions
• Troubleshoot production issues, perform root cause analysis, and implement long-term fixes
• Mentor junior engineers and contribute to design reviews, best practices, and DevOps processes
• 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 related field
• 8+ years of software engineering experience with solid TypeScript/JavaScript expertise
• Hands-on experience building LLM-based intent engines using AWS Bedrock or similar platforms
• Deep experience with AWS services (Lambda, API Gateway, DynamoDB, S3, SQS, CloudWatch)
• Solid experience in conversational AI, IVR systems, and AWS Lex (or equivalent)
• Experience designing scalable, event-driven, microservices-based architectures
• Experience with CI/CD pipelines and DevOps practices
• Expertise in monitoring, logging, and observability using AWS CloudWatch
• Solid understanding of API design, system integration, and cloud-native development
• Proven ability to troubleshoot complex distributed systems
• Demonstrated solid leadership, communication, and mentoring skills

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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