Principal Frontend Platform Engineer
On-site · Philadelphia, Pennsylvania, United States
Job Summary
Principal Frontend Platform Engineer to lead frontend architecture, platform standards, and cross-brand, multi-tenant frontend delivery across web and mobile ecosystems. Drive the evolution of frontend platform strategy using React, Next.js, React Native, and Sanity.io; establish design system governance, authentication patterns (OAuth2/OIDC, MFA, SSO), and frontend observability. Ensure secure, scalable frontend architecture with HIPAA/HITRUST/PCI-DSS considerations; own CI/CD, testing, deployment workflows, and environment governance. Mentor engineers, partner with Product/UX/AI/Data teams, and lead migrations (e.g., Flutter to React Native) to a unified cross-brand codebase. Collaborate with Azure cloud services, backend microservices, and third-party integrations (Salesforce, Twilio, etc.) to deliver healthcare experiences at scale.
Required Qualifications
- 8+ years of professional frontend engineering experience with 3+ years operating in a Principal, Staff, or Lead Engineer capacity
- Deep expertise in React.js, Next.js, TypeScript, JavaScript, and modern frontend architecture patterns
- Strong experience building scalable applications using React Native
- Experience integrating headless CMS platforms, preferably Sanity.io
- Experience implementing authentication and identity solutions using OAuth2/OIDC platforms such as FusionAuth, Auth0, Okta, or Azure AD
- Strong understanding of frontend state management, data-fetching, and caching architectures (React Query, Redux Toolkit, Zustand, Apollo, etc.)
- Expertise in responsive design, accessibility standards (WCAG 2.1+), and frontend performance optimization
- Experience building and maintaining enterprise design systems and component libraries
- Experience designing and supporting multi-brand, multi-tenant frontend platforms
- Strong understanding of microservices architectures and GraphQL/REST API integration patterns
- Experience with Azure cloud services including App Services, Static Web Apps, CDN, and Blob Storage
- Familiarity with CI/CD pipelines, containerization, and modern deployment workflows
- Experience implementing frontend observability and monitoring solutions such as Datadog, Sentry, New Relic, or OpenTelemetry
- Understanding of secure application development and regulated environment considerations
- Proven ability to mentor engineering teams and influence technical direction across organizations
- Strong collaboration skills across product, UX, platform engineering, security, and executive leadership teams
- Excellent communication skills with the ability to translate complex technical concepts into business outcomes
- Candidates must be authorized to work in the United States without current or future need for visa sponsorship
- Candidates must be able to commute to our Philadelphia, PA office on Tuesdays and Wednesdays
Additional Requirements
- Must be authorized to work in the United States without visa sponsorship
- Must be able to commute to Philadelphia, PA office on Tuesdays and Wednesdays
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