Full Stack Engineer (Front-End)

The role

You will build provider-facing web applications, owning the user experience from component design and state management through performance, accessibility and testing. You will also contribute to the GraphQL APIs and cloud services behind the front end.

What you will do

• Lead architecture and development of complex, data-rich provider-facing web applications
• Design and implement client-side state management for claims, eligibility, authorizations and provider onboarding
• Build complex, validated forms and multi-step workflows for dense healthcare data
• Build efficient GraphQL clients, including caching, pagination and optimistic updates
• Establish front-end testing standards across unit, component and end-to-end tests
• Apply front-end security best practices for applications handling PHI
• Champion responsive, cross-browser UI development with a consistent component library
• Design, develop and maintain back-end services and GraphQL APIs that power the front end
• Implement serverless architectures and microservices
• Mentor engineers on front-end architecture, code quality, accessibility and testing

Required qualifications

• 5+ years building production software, with a strong focus on complex front-end web applications
• Deep expertise in a statically typed language and at least one modern component-based front-end framework
• A strong eye for UI quality
• Hands-on experience with front-end performance optimization, accessibility (WCAG 2.1 AA) and cross-browser compatibility
• Experience with GraphQL on the client side, plus understanding of API design and back-end data models
• Working proficiency in at least one back-end language and a major cloud platform, including serverless services
• Experience with front-end testing at unit, component and end-to-end levels
• Comfort writing SQL and working with relational or NoSQL data
• Fluency with AI-assisted development tools
• Bachelor's degree in computer science, engineering or a related field, or equivalent practical experience

Nice to have

• Experience with more than one front-end framework
• Experience building or maintaining a design system or component library
• Experience with micro-frontend architectures or monorepos
• Experience building search experiences, including indexing, querying and performance tuning
• Experience in healthcare, especially claims processing or provider portals, and an understanding of HIPAA
• Experience with iOS, Android or cross-platform mobile development
• Experience integrating contact center platforms into web applications through their APIs and SDKs
• Experience building agentic AI chatbots or assistants, including LLM integration, tool calling and conversational chat interfaces

Before you apply

• Compensation is based on candidate experience and relevant certifications

About the company

XO Health is the first health plan designed by and for self-insured employers, aiming for a more unified health experience for those who receive care, deliver it and pay for it. It is an equal opportunity employer.