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Gary B.GB

Gary B.

SENIOR FULL-STACK DEVELOPER

€780/day
Paris, FR
15+ years

Average response time: 1 hour

About Gary

👉 Backend-first Senior Software Engineer with 15+ years of experience architecting complex systems across healthcare, real estate, and AI-focused applications.
👉 Expert in API design, async programming, and ML model integration.
👉 Proven track record leading end-to-end builds of high-impact mobile/web platforms — from backend architecture to dev team leadership, deployment, and security.
  • French

    Native or bilingual

  • English

    Native or bilingual

  • Portuguese

    Fluent

  • Spanish

    Conversational

  • German

    Basic

Remote only
Primarily works remotely

Experience

  • 🧘 Wellness & BLE-Connected Health App
    FULL-STACK MOBILE DEVELOPER
    HEALTH AND WELLNESS
    March 2025 - April 2026 (1 year and 1 month)
    Built a cross-platform wellness app that connects to a proprietary health mat via Bluetooth, syncing biometric data and delivering AI-powered coaching.
    · Architected a monorepo (mobile app + admin dashboard + shared packages) with React Native/Expo and Next.js
    · Implemented BLE pairing and communication with physical mat device
    · Integrated HealthKit (iOS) and Health Connect (Android) for sleep, HRV, activity, and step data ingestion
    · Designed a composite Wellness Score algorithm combining biometrics, environmental factors, and self-reported check-in answers
    · Built an LLM-powered chatbot with RAG for personalized wellness coaching
    · Developed treatment playback system streaming audio content from remote backend
    · Set up Supabase backend (Postgres, Auth, Row-Level Security, Storage)
    · Created admin web dashboard (Next.js) for user management, analytics, and treatment uploads
    · Integrated Sentry for crash reporting and performance monitoring
    · Managed TestFlight and Play Store deployment pipeline
    React Native Bluetooth Low Energy Supabase PostgreSQL Chatbot IA
  • 🧠 Parkinson Disease Management Web App
    CHIEF TECHNOLOGY OFFICER
    November 2023 - January 2025 (1 year and 2 months)
    Led end-to-end development of a digital health platform for Parkinson's patients and neurologists, integrating telehealth, AI, and wearable data.
    • Defined technical vision, architecture, and roadmap
    • Managed 10+ engineers across backend, frontend, mobile, and smartwatch stacks
    • Developed tremor measurement using mobile gyroscopes; built voice evaluation tools with ML scoring
    • Designed data pipelines collecting smartwatch data to train models predicting disease progression and medication response
    • Integrated remote video consultations, patient dashboards, and clinician tools
    • Ensured HIPAA compliance, data encryption, and secure access control
    • Collaborated with neurologists to fine-tune scoring algorithms
    • Reported to executives and clinical partners on progress and scalability
    Docker Python Kotlin Next.js React Native
  • 🩺 Gynecology & Pregnancy Monitoring Platform
    FULL-STACK LEAD DEVELOPER
    July 2022 - October 2023 (1 year and 3 months)
    Delivered a HIPAA-compliant telehealth platform for gynecology, including interactive follow-ups and secure video consults.
    • Built score-based pregnancy assessments
    • Enabled real-time video using WebRTC/Vonage SDK
    • Integrated prescription module with national system
    • Secured data with JWT/OAuth2 and encrypted storage
    • Created admin dashboards for clinics and OB-GYNs
    Websocket Chatbot React.js React Native Node.js

Recommendations

RC
Romain GaumontRG
R C and 1 other person have recommended Gary

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