Senior Software Engineer II

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.

Mgr Full Stack (Backend) Engineer, SG28

Job Responsibilities

·Full Stack Development (Backend)

·Develop high-performance applications for AI-assisted workflows and decision systems

·Cloud(AWS)

·Architect and deploy applications on AWS (Lambda, ECS/EKS, API Gateway, S3, DynamoDB, Aurora, Bedrock/SageMaker)

·Design event-driven and microservices architectures for scalable AI workloads

·Implement Infrastructure-as-Code (Terraform/CloudFormation)

·CI/CD & Engineering Excellence

·Build and optimize CI/CD pipelines (GitHub Actions/Azure DevOps/Jenkins) for automated builds, testing, and deployments

·Apply MLOps practices including model lifecycle, versioning, and monitoring

·Improve performance, reliability, observability, and cost efficiency of AI inference systems

Key Skills (Must-Have)

• Backend: Python (FastAPI/Flask), API design
• Cloud: AWS (Lambda, ECS/EKS, API Gateway, S3, DynamoDB)
• DevOps: CI/CD, Docker, Kubernetes, Terraform
• Data: SQL/NoSQL, vector databases

Required Qualifications

·8+ years of full stack engineering experience, with strong backend and frontend expertise

·Strong programming skills in Python and experience with RESTful API development

·Proven experience working on AWS cloud platform (compute, storage, networking, IAM, monitoring)

·Strong understanding of CI/CD pipelines, DevOps practices, and containerization (Docker/Kubernetes)

·Experience integrating AI/ML models into production applications

Preferred Qualifications

·Hands-on experience with React.js (hooks, state management, component design)

·Experience with Agentic AI / Generative AI systems (LLMs, RAG, orchestration frameworks)

·Familiarity with vector databases (Pinecone, FAISS, OpenSearch) and semantic search

·Exposure to MLOps ecosystems (model registry, pipelines, evaluation frameworks)

·Experience in microservices architecture and event-driven systems

·Prior experience in healthcare/claims domain or regulated environments (preferred)

Healthcare domain exposure (preferred):

·Experience with healthcare datasets (claims, eligibility, prior authorization, provider directories)

·Understanding of clinical or operational workflows (provider calls, documentation, adjudication steps)

·Awareness of healthcare data sensitivity and HIPAA‑like compliance expectations

Required Qualifications:

• Undergraduate degree or equivalent experience
• 8+ years of total software engineering experience, including 2+ years hands-on in AI/ML (e.g., NLP, GenAI, predictive modeling, or recommendations)
• Experience building and integrating model backed APIs/services (Python/Node/Java) into production systems
• Working knowledge of a major cloud (preferably AWS): containers/serverless, IAM basics, storage/networking fundamentals, logging/metrics
• Understanding of security, access control, monitoring/alerting, and foundational resiliency/DR concepts for cloud applications
• Solid Python skills with one or more ML/DL frameworks (PyTorch/TensorFlow; familiarity with Hugging Face or LangChain is a plus)
• Solid software engineering practices: version control, code reviews, automated testing, and CI/CD

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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