Freelance Flutter Front End Developer Jobs (NOW HIRING)

About Medical Guardian

Medical Guardian is transforming from a device-centric emergency response company into a connected healthcare platform that empowers older adults and caregivers with greater independence, safety, and proactive wellness support.

As part of our multi-year Digital Transformation Initiative, we are modernizing and unifying our digital ecosystem, including member portals, caregiver experiences, senior living applications, and partner platforms, into a scalable, modular Unified App Platform.

We are seeking a Principal Frontend Platform Engineer to lead the frontend architecture, engineering standards, and platform strategy powering this transformation across web and mobile experiences.

Role Summary

As the Principal Frontend Platform Engineer, you will serve as the technical leader responsible for architecting and delivering modern, scalable, secure, and highly performant frontend applications across the Medical Guardian ecosystem.

You will drive the evolution of our Frontend Platform strategy using React, Next.js, React Native, Sanity.io, and modern cloud-native development practices. This role will establish frontend architectural standards, design system governance, authentication patterns, observability, and developer experience practices across engineering teams.

This is a highly strategic, hands-on leadership role focused on enabling a modular, multilingual, multi-brand digital platform supporting members, caregivers, partners, and internal operations. This role is expected to remain technically hands-on, contributing to architecture, proof-of-concepts, critical implementation efforts, and frontend platform engineering initiatives.

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

Key Responsibilities

Architecture & Platform Engineering

• Lead frontend architecture for enterprise web and mobile applications using React, Next.js, and React Native.
• Design scalable, modular, reusable UI components aligned to the enterprise Design System and component governance strategy.
• Architect and implement integrations with Sanity.io headless CMS for structured, multilingual, and dynamic content delivery.
• Design and implement secure authentication and identity flows leveraging FusionAuth, OAuth2/OIDC, MFA, SSO, and role-based access controls.
• Apply secure development principles and healthcare compliance considerations, including HIPAA, PHI handling, HITRUST, and PCI-DSS requirements, to frontend architecture and platform design decisions.
• Define frontend platform standards for performance, scalability, accessibility, resiliency, and security.
• Define and evolve frontend CI/CD standards including automated testing, deployment workflows, release governance, environment management, and production rollout strategies.
• Drive adoption of modern frontend architecture patterns including SSR/ISR, edge rendering, micro frontends, and Progressive Web Application (PWA) capabilities.
• Define and implement frontend observability standards including telemetry, error tracking, performance monitoring, distributed tracing, and user experience analytics.

Leadership & Engineering Excellence

• Serve as the principal technical authority and mentor for frontend engineers across multiple engineering pods.
• Establish and enforce coding standards, architectural governance, testing practices, and secure development patterns.
• Own the frontend platform technical roadmap, including architectural direction, modernization initiatives, technical debt reduction, and presentation of strategy and progress to engineering leadership.
• Improve frontend developer experience through tooling, local development workflows, CI/CD automation, automated testing, engineering documentation, and release enablement practices.
• Partner with platform and security teams to mature CI/CD pipelines, secure development workflows, automated quality gates, and frontend release processes.
• Establish scalable frontend release strategies including feature flags, staged deployments, rollback mechanisms, and production validation practices.

Delivery & Cross-Functional Collaboration

• Collaborate with Product, UX, Engineering, AI/ML, and Data teams to translate business requirements into scalable technical solutions.
• Integrate frontend applications with backend microservices, orchestration platforms, and third-party APIs including Salesforce, Salesforce Marketing Cloud, Twilio, and other enterprise platforms.
• Lead delivery of multi-brand, multi-tenant application capabilities supporting Medical Guardian, MobileHelp, and MedScope ecosystems.
• Lead the strategic migration of mobile applications from Flutter to React Native, establishing the architecture, tooling, and engineering patterns for a unified cross-platform codebase.
• Partner with platform and infrastructure teams to optimize frontend deployment strategies across Azure cloud environments.

Innovation & Strategy

• Evaluate and introduce emerging frontend technologies, frameworks, and engineering practices.
• Drive personalization and intelligent engagement capabilities leveraging AI/ML-powered experiences.
• Contribute to long-term frontend Platform strategy, technical innovation initiatives, and engineering thought leadership.

Required Skills & Experience

Technical Expertise

• 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.

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.
• 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

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.

Preferred Technology Stack

• React.js / Next.js
• React Native
• TypeScript
• Sanity.io
• FusionAuth
• GraphQL / REST APIs
• Azure Cloud Services
• Storybook / Design Systems
• GitHub Actions / Azure DevOps
• Datadog / Sentry / OpenTelemetry

Why Join Medical Guardian?

The connected healthcare space is one of the most consequential areas in technology right now, and Medical Guardian is at an inflection point. We have the market position, the member base, and the executive commitment to build something genuinely differentiated, and this role is central to that mission.

You will not be inheriting someone else’s legacy decisions. You will define the architecture. You will set the standards. You will help build the platform that the next generation of Medical Guardian digital products will run on. The work you do will be directly visible to engineering leadership, experienced by hundreds of thousands of members and caregivers, and reflected in the platform for years to come.

The team is collaborative, technically strong, and growing. We are investing in our engineers through better tooling, stronger processes, and meaningful career development opportunities. If you want to do impactful and technically challenging work in an environment where your contributions genuinely matter, we would love to talk with you.

Benefits

• Health Care Plan (Medical, Dental & Vision)
• Paid Time Off (Vacation, Sick Time Off & Holidays)
• Company Paid Short Term Disability and Life Insurance
• Retirement Plan (401k) with Company Match