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David DeheunynckDD

David Deheunynck

Product Builder - AI-driven Development

€500/day
Lille, FR
0-2 years

Average response time: 1 hour

Freelancer profile translated to English.
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About David

HealthWatch Global is a project I've been passionate about for a long time: I started coding it as a self-taught developer in May 2024. AI development tools (including Claude Code) allowed me to truly bring it to production, by guiding technical execution rather than writing every line myself.

Concrete proof: HealthWatch Global, a subscription SaaS in production for over a year, which I design and operate alone. It covers authentication, billing, and subscriptions (Stripe, Checkout, webhooks, customer portal), automated data pipelines (multi-source ingestion, deduplication), production monitoring (Sentry, Slack), and security incident response.

I don't claim to write every line of code by hand: I direct AI tools to deliver quickly, I make product and architecture decisions, and I oversee quality all the way to production. If you have a project and want a functional MVP quickly without building a technical team, this is exactly what I do.

Stack covered: Next.js, React, TypeScript, Node.js, PostgreSQL/Supabase, Stripe, Vercel.
  • French

    Native or bilingual

  • English

    Fluent

  • Indonesian

    Conversational

Remote only
Primarily works remotely

Experience

  • HealthWatch Global
    Founder & Full-Stack Developer
    MEDICAL
    May 2026 - Today (2 months)
    Solo design and development of an epidemiological surveillance SaaS platform (subscriptions, real-time alerts, data dashboard), from the first line of code to production operation.

    Responsibilities and achievements:

    - Full-stack architecture and development (Next.js, React, TypeScript, PostgreSQL/Supabase)

    - Authentication and user/admin role management
    - Billing and subscriptions via Stripe (Checkout, webhooks, customer portal, free trials)

    - Automated data pipelines (crons, multi-source ingestion, deduplication, geocoding)

    - Production monitoring and alerting (Sentry, Slack, transactional emails)

    - Security: audits, secret rotation, incident response

    - Multilingual support (FR/EN/AR)

    Solely responsible for the entire technical stack, from product design to production maintenance.
    Next.js Stripe TypeScript Node.js Supabase
  • Club Med
    Operations Manager — International Hospitality & Catering
    June 2011 - May 2026 (14 years and 11 months)
    Autonomous management of teams and operations in demanding international environments (Club Med, Barcelona, Bandung): team coordination, supplier relations, recruitment, stock management. This experience in autonomy and direct responsibility is reflected today in my approach to carrying a SaaS product end-to-end alone.

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