Senior Full Stack Engineer - Java, React js
UnitedHealth Group
We are hiring **Senior Full Stack Engineers** who are also **AI Builders** -engineers who harness the power of Generative AI to accelerate development, enhance user experience, and build smarter web portals. You'll work in a fast-paced Agile environment, using tools like **GitHub Copilot** , **Claude** , and **Gemini AI** to implement **Vibe coding techniques** and deliver high-impact solutions for our members.
**Key Responsibilities:**
**Full Stack Development:**
+ Build and enhance scalable web applications using **Java (Spring Boot)** , **React.js** , and **AWS** .
+ Integrate AI-driven components such as smart search, personalized recommendations, and conversational interfaces.
+ Optimize application performance, security, and reliability.
+ Integrate AI-driven components such as smart search, personalized recommendations, and conversational interfaces.
+ Collaborate with UX/UI designers to create intuitive, responsive, and accessible user experiences.
+ Continuously experiment with AI-assisted workflows to improve development velocity and code quality.
+ Participate in architecture design, code reviews, and agile ceremonies.
+ Mentor peers on best practices for AI-assisted development
+ Work within **Scrum or Kanban frameworks** , participating in sprint planning, daily stand-ups, retrospectives, and demos.
+ Collaborate closely with Product Owners, Scrum Masters, and cross-functional teams to deliver incremental value
+ Use tools like **JIRA** , **Confluence** , and **Git** to manage work and documentation.
+ Embrace a **test-driven development (TDD)** and **shift-left testing** mindset to ensure quality from the start
**AI Builder Responsibilities:**
+ Use **GenAI tools** (Copilot, Claude, Gemini AI) to ideate, prototype, and implement features efficiently.
+ Apply **Vibe coding techniques** to maintain clean, expressive, and AI-augmented codebases.
+ Develop internal tools and scripts using AI to automate repetitive tasks and improve productivity.
+ Stay current with emerging GenAI trends, tools, and ethical considerations.
+ Develop and maintain cross-platform Mobile applications using **React Native** OrWebusing **ReactJS** .
+ Able to Integrate **AI Builder models** into mobile apps or Web.
**Required Qualifications:**
+ 7+ years of experience in full stack development with **Java (Spring Boot)** and **React.js** .
+ Strong experience with **AWS services** (Lambda, API Gateway, S3, DynamoDB, etc.).
+ Proven experience using **AI coding assistants** like GitHub Copilot, Claude, Gemini AI.
+ Familiarity with **prompt engineering** , **LLM APIs** , and **AI-enhanced development workflows** .
+ Solid understanding of RESTful APIs, microservices architecture, and CI/CD pipelines.
+ Experience working in **Agile teams** with a strong understanding of Agile principles and ceremonies.
**Preferred Qualifications:**
+ Experience with GenAI platforms like OpenAI, Anthropic, Google Vertex AI.
+ Exposure to serverless architecture, containerization (Docker, Kubernetes).
+ Knowledge of ethical AI practices and data privacy considerations.
+ Experience building intelligent UI components (e.g., chatbots, smart forms, predictive inputs).
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