Back to Projects

Accredo & Express Scripts — Healthcare PBM Platform

Front-End Developer · 2021

Accredo and Express Scripts are enterprise healthcare platforms for pharmacy benefits management serving millions of US patients. As Front-End Developer at Accenture (clients: Cigna, Pfizer, Accredo, Express Scripts), I refactored legacy frontends, built a reusable component library, raised test coverage, and migrated critical modules to modern React — all HIPAA-compliant with zero downtime.

Key Metrics & Outcomes

  • Maintainability +60%; technical debt −70%
  • 85%+ test coverage; regression defects −45%
  • 10+ modules delivered; app performance +30%
  • Zero downtime over 6-month migration; 0 HIPAA incidents
  • 100% WCAG 2.1 AA; 40+ accessible components

Project Overview

Situation

Healthcare applications ran on legacy class-based React with outdated patterns, low test coverage, and technical debt impacting delivery for millions of patients — under strict HIPAA compliance.

Task

Lead comprehensive UI refactoring to functional components, hooks, and Context API with zero downtime and full compliance.

Action

Systematically refactored class components to hooks; created 20+ custom hooks for reusable logic and API integration; built a 40+ component accessible UI library with Context API; developed Jest suites reaching 85%+ coverage; integrated ESLint/Gulp quality pipelines and LaunchDarkly feature flags; implemented async API integration with error handling and retries; ensured WCAG 2.1 AA throughout.

Result

Maintainability +60%, regression bugs −45%, technical debt −70%, performance +30%, 10+ modules delivered on Agile timelines — with zero HIPAA incidents.

Implementation 2

Situation

Migrating from legacy state management to Context API had to avoid disrupting workflows processing millions of patient records daily while keeping HIPAA compliance in every UI interaction.

Task

Execute a seamless migration preserving functionality, adding HIPAA-compliant data masking and accessibility without production impact.

Action

Created a phased migration plan with feature flags; ran Context API alongside existing state for gradual transition; added HIPAA-compliant data masking; implemented secure form handling for sensitive data; applied WCAG 2.1 AA standards; tested thoroughly at each phase with full documentation.

Result

Zero downtime across a 6-month migration; 0 HIPAA incidents; 100% WCAG 2.1 AA on migrated modules; 100% of legacy state code eliminated; regression bugs −45% post-migration.

Technology Stack

  • React
  • Hooks
  • Context API
  • Jest
  • Gulp
  • LaunchDarkly
  • Styled Components
  • React Testing Library
  • REST APIs
  • WCAG 2.1 AA
  • SVN