Senior Full Stack Engineer, AI Platform

Geisinger

Senior Full Stack Engineer responsible for building user-facing applications for AI programs at Geisinger. Collaborating with teams to optimize internal tools for effective AI capabilities.

Posted 5/1/2026full-timeRemote • Pennsylvania • 🇺🇸 United StatesSeniorWebsite

Tech Stack

Tools & technologies

CypressPythonReact

About the role

Key responsibilities & impact

Own the end-to-end product quality of every user-facing application the AI Platform ships
Build the frontend architecture and the shared design system / component library used across every AI Platform application
Ensure RBAC-aware interfaces, making sure program teams, governance stakeholders, leadership, and platform engineers see the right data and controls
Lead the backend-for-frontend layer, API patterns, data contracts with MLOps, and the seams where the UI meets the platform
Define the application-level testing strategy: unit, integration, and end-to-end suites
Instrument every application for adoption, feature engagement, error rates, and load times, and surface insights that inform the platform roadmap
Optimize frontend performance, including bundle optimization and lazy loading
Define and enforce UX quality gates that no application ships below
Collaborate with application teams to build user-facing applications alongside MLOps engineers
Wire telemetry into every surface and read the generated data for informed decision making

Requirements

What you’ll need

5+ years of full stack engineering experience shipping production web applications, including at least 2 years where you were the senior frontend voice on a team or product
Deep proficiency in modern React (hooks, context, suspense, performance patterns) and the surrounding ecosystem
Hands-on experience designing or substantially evolving a shared component library or design system used by more than one application
Strong fluency in Python and FastAPI (or comparable Python web framework experience) for backend-for-frontend work
Demonstrated ownership of accessibility (WCAG 2.1 AA) as a first-class engineering concern, not a final-week checklist
Experience implementing role-based access controls and permission-aware views in real applications
A real testing practice: unit, integration, and E2E with one of Playwright or Cypress
Experience instrumenting applications with usage telemetry and using that data to inform product decisions
Strong written communication — you will write technical specs, design system documentation, and API contracts that other engineers rely on
Bachelor's degree in Computer Science, a related technical field, or equivalent professional experience

Benefits

Comp & perks

Healthcare benefits for full time and part time positions from day one, including vision, dental and benefits for domestic partners
Atmosphere of collaboration, cooperation and collegiality

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills & Tools

full stack engineeringReactPythonFastAPIunit testingintegration testingend-to-end testingPlaywrightCypressaccessibility (WCAG 2.1 AA)

Soft Skills

strong written communicationcollaborationleadershipdecision making