Principal Front End Developer Philadelphia, PA (hybrid

Hi

Title: Principal Front End Developer

Location: Philadelphia, PA (hybrid onsite Tue & Wed every week)

Duration: 6 Months C2H (without sponsorship at ANY time)

Interviews: 3 rounds, first 2 rounds are virtual & 3rd round is in person

Job Description

Principal Frontend App Developer, serving as the technical leader for the design and implementation of modern, scalable, and user-friendly applications. Will set coding standards, establish architectural patterns, and mentor a team of frontend developers while working closely with backend, AI/ML, and product teams.

Hands-on leadership focused on enabling a modular, multilingual, multi-brand digital platform supporting client customers. This role is expected to remain technically hands-on, contributing to architecture, proof-of-concepts, critical implementation efforts, and frontend platform engineering initiatives.

Will work closely with Product, UX, Platform Engineering, AI/ML, Security, and backend services teams to deliver seamless digital healthcare experiences at scale.

Required Skills & Experience

Technical Expertise

·       Minimum of 8 years of professional frontend engineering experience

        3+ years operating in a Principal, Staff, or Lead Engineer capacity with direct reports.

·       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.

Architecture & Systems

·       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.

Leadership & Collaboration

·       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.

Preferred Qualifications

·       Experience building applications within healthcare, healthcare technology, or other regulated industries.

·       Familiarity with HIPAA, PHI handling, HITRUST, PCI-DSS, or related compliance frameworks.

·       Experience supporting multilingual and internationalized digital platforms.

·       Familiarity with AI/ML-driven personalization, conversational UI, or intelligent engagement experiences.

·       Exposure to Flutter or legacy hybrid mobile frameworks.

·       Experience with Storybook, Figma integration workflows, and design token management.

·       Experience with micro frontend architectures and edge delivery platforms.