Lead Full Stack Engineer

Requisition Number: 2353359
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:

• Architect, design, and develop scalable, secure, low-latency backend services and REST/gRPC APIs
• Build and optimize distributed systems, microservices, data pipelines, and asynchronous event-driven workflows
• Integrate backend services with AI/ML models, LLM-based components, or AI-driven decision systems
• Drive design discussions, perform code reviews, and uphold engineering excellence
• Collaborate with Product, Architecture, DevOps, and Data Science teams to deliver end-to-end features
• Ensure system reliability, monitoring, observability, and adherence to performance SLAs
• Mentor junior engineers on backend fundamentals, design patterns, and clean code principles
• Build AI/ML powered alerting, anomaly detection, and auto remediation for dispensing and workload flows
• Create Splunk and Dynatrace dashboards, alerts, and health indicators for API and WLB performance
• Integrate system workflows with ServiceNow (incident, problem, automation)
• Document APIs, workflows, disposition logic, runbooks, and operational 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 or Master's degree in Computer Science, Engineering, or related field
• 6+ years in software or application engineering
• Solid Java development experience with API first architectures
• Solid Azure experience (App Services, Functions, AKS, SQL, Key Vault, etc.)
• Experience building microservices, distributed systems, event-driven architecture, and high-throughput services
• Experience with cloud platforms (Azure preferred), CI/CD, Docker, Kubernetes
• Experience in product-based companies with strong engineering culture

Preferred Qualifications:

• Experience using AI/ML for intelligent alerting or automated L1/L2 support
• Experience with Kubernetes and containerization
• Expertise with Splunk, Dynatrace, and log based troubleshooting
• Hands-on backend development using Java
• Expertise with SQL (MySQL/PostgreSQL) and NoSQL (DynamoDB/MongoDB/Cassandra) databases
• Knowledge of messaging and streaming systems like Kafka, SQS/SNS, Pub/Sub
• Solid proficiency in Data Structures, Algorithms, OOP, System Design
• Solid understanding of concurrency, multithreading, caching (Redis), API best practices
• Infrastructure as Code (Terraform, Bicep, ARM)
• Background in pharmacy, PBM, or dispensing systems

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.