Join Optum, a global leader in healthcare technology, and contribute to improving health outcomes worldwide. We are seeking a highly skilled Senior Full Stack Engineer to design, develop, and scale cutting-edge, AI-powered digital products and data-rich experiences. If you have a passion for creating intuitive dashboards, analytics platforms, and enterprise-grade web applications using React, TypeScript, and Node.js, this is your opportunity to make a significant impact.

This role offers a dynamic blend of robust full-stack engineering and hands-on experience with Python and Generative AI. You'll be instrumental in building intelligent applications, AI assistants, and advanced user experiences. Collaborating closely with product, AI/ML, design, and platform teams, you will deliver scalable, secure, and resilient solutions that drive business success.

Key responsibilities include designing and developing modern, responsive web applications with React, TypeScript, and Node.js. You will build rich dashboards, analytics portals, and data visualizations delivering actionable insights.

Develop scalable backend services, APIs, and microservices, alongside reusable, channel-agnostic APIs for various applications and intelligent agents. Integrate Generative AI solutions, including Retrieval-Augmented Generation (RAG) and prompt engineering. Create intuitive user experiences and implement robust observability and monitoring for applications and AI systems.

Drive engineering excellence through automated testing, code reviews, CI/CD, and modern DevOps practices. Collaborate with cross-functional teams to deliver secure and scalable solutions, evaluate emerging technologies, and ensure adherence to security, governance, and responsible AI standards.

A Bachelor's degree in Computer Science, Engineering, or a related field, or equivalent practical experience, is required. Candidates should possess 6+ years of professional software engineering experience in full-stack application development.

Essential experience includes building and deploying Generative AI applications, working with AI agents, RAG architectures, vector search, prompt engineering, and tool/function calling. Proficiency in designing and developing RESTful APIs, microservices, and deploying applications in cloud environments (AWS, Azure, GCP) is crucial.

Solid expertise in React.js, TypeScript, JavaScript, Node.js, HTML5, and CSS3 is mandatory. Knowledge of AI assistants, copilots, agentic workflows, and CI/CD, containerization, and DevOps practices is expected. Strong proficiency in Python for backend services, automation, and AI integration is vital. Proven ability to deliver solutions end-to-end, from architecture to deployment and support, is necessary.