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Lamar Petty
Mid-level Full-Stack Product Engineer specializing in data-driven web apps and healthcare systems
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About
Full-stack engineer with production experience shipping a healthcare-focused web app (Pregnancy-Pal) using Next.js/TypeScript on GCP, integrating a Python/Flask middleware and FHIR server for patient/practitioner dashboards and messaging. Former Wikimedia Foundation Android engineer who led the end-to-end 'Year in Review' feature and built robust automated testing/CI practices (Espresso, GitHub Actions matrix). Strong emphasis on reliability via rigorous validation, comprehensive Postman testing, and detailed API documentation.
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Key Strengths
- Shipped and maintained a full-stack Next.js/TypeScript app on GCP (frontend + Flask middleware + cloud ops)
- Designed API layer integrating Flask middleware with a FHIR client for CRUD against a hospital FHIR server
- Implemented patient-provider messaging workflow using FHIR Communication resources
- Pragmatic state-management decision-making (chose Zustand over Redux for team fit and maintainability; addressed hydration issues)
- Improved UX reliability by implementing explicit async UI states (idle/pending/success/error) with progress + snackbar feedback, eliminating crashes/blank screens
- Strong testing discipline: built a 150-test Postman suite using partition testing for complex CRUD/nested-object rules
- Created extensive API documentation (30-page spec with operations and response codes) to ensure long-term consistency
- Production-quality CI/CD and test automation (GitHub Actions matrix testing with Android emulator across devices/API levels)
- Feature ownership/leadership: led Wikimedia Android 'Year in Review' feature end-to-end including planning, milestones, and cross-functional collaboration
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