Freelancer profile translated to English.
Back to original languageAbout Julien
Stripe Consultant | Expert Stripe Connect & Stripe Billing
Audit, redesign, and payment architecture for growing marketplaces and SaaS.
My 2026 audits identified between+€16k and +€44k/year in recurring gainsfor my clients (digiSchool, KS Lab, Ventilo, CheckTaPaie).
✓ Stripe Certified x3 (Architect & Developer)
✓ Ex-CTO x2 (raised €250k and exit)
✓ +20 Stripe missions
🎯 WHO I WORK FOR
- Marketplaces using Stripe Connect (Express, Custom, Standard, marketplace flows, customer onboarding, KYC)
- Subscription SaaS on Stripe Billing (churn, dunning, recovery, subscription management, multi-country VAT) and AI SaaS with usage-based billing (credits, overages, metered billing)
- Founders, CTOs, and tech teams in direct contact
💸 WHAT I DO
- Stripe Audit: architecture, webhooks, marketplace flows, documentation compliance, quantified quick wins
- **Implementation & Redesign**: Stripe Connect (KYC onboarding, commissions, payouts), Stripe Billing (subscriptions, multi-country VAT, recovery)
- **Custom Development**: backend API, idempotent webhooks, custom plugins, Stripe integration
- Ongoing Support:external Stripe referent, architecture evolution, regulatory changes (SCA, ViDA 2026, Stripe Tax), Stripe cost optimization (payout fees, pricing structure, commissions)
⚡ WHY MY CLIENTS CHOOSE ME
- Audit-first approach: I identify actionable quick wins before any development.
- Documentation rigor: each deliverable is structured, quantified, actionable with ready-to-use code examples.
- Product + technical vision: I speak architecture, business model, and ROI, not just code.
📩 A Stripe project or roadblock?
Let's talk. From the first exchange, you'll leave with a clear vision and concrete leads.
French
Native or bilingual
English
Native or bilingual
Can work on-site
Lyon (up to 50km), Paris (up to 50km), Marseille (up to 50km), Toulouse (up to 50km)
Experience
- LOAD STATIONS
On Malt
Stripe Expert - Kick-off and AuditSOFTWARE PUBLISHINGApril 2026 - May 2026 (1 month)Nîmes, FranceIn-person kick-off day for a French SaaS publisher specializing in monitoring and billing for EV charging stations, operating a Stripe architecture with various flows.Missions performed:- Meet stakeholders (management, tech, accounting) and understand the organization
- Map payment and payout flows
- Identify priority friction points (multi-account architecture, reconciliation, fraud, metadata)
- Prepare the upcoming Stripe audit
- CheckTaPaieStripe Connect Developer – Audit, Architecture & ImplementationHUMAN RESOURCESNovember 2025 - April 2026 (5 months)Lyon, FranceComplete redesign of a B2B SaaS platform's Stripe Connect architecture after an audit identified critical risks in financial flows, VAT, and webhooks. Migration from a WooCommerce + third-party plugins stack to a native Stripe Connect Express integration + automated Pennylane invoicing.Missions performed:
- Full Stripe/WooCommerce/WordPress audit: payment flows, payouts, VAT, webhooks, onboarding
- Identification of critical risks in the payment architecture and remediation recommendations
- Complete implementation: Express onboarding, KYC, reliable webhooks, automated Pennylane API invoicing (5 invoice types, GP mandate, PDF sending)
- Architecture recommendation: Stripe Connect Express + SC&T migration, automated commissions and payouts, VAT by territory
- Custom WordPress plugin development: Stripe Connect Express + Pennylane, auto-retry with exponential backoff
- VentiloStripe Connect Expert - Marketplace Audit and RecommendationsENTERTAINMENT AND LEISUREApril 2026 - April 2026Lyon, FranceStripe Connect audit for an event ticketing marketplace (Express direct charge model) with payout optimization identified, leading to 70% fee savings. Validation of the direct charge model, complete review of the architecture, webhooks, connected accounts, and onboarding.Missions performed:
- Stripe Connect architecture audit: direct charge model validation, fund flows, fee distribution, and negative balance responsibility
- Payout configuration analysis: schedule optimization with up to 70% savings on payout fees
- Backend code review: idempotency, webhook handling, API versioning, critical operation security
- Connected account and onboarding audit: duplicate detection, incomplete onboarding rates, automated follow-up recommendations
- Analysis of configured webhooks and identification of missing events
- Advice on evolving to Stripe Terminal: Tap to Pay vs. physical readers comparison
- Structured audit report with prioritized action plan (critical/important/useful) and debriefing session
Reviews
Recommendations
EM
+6
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Education
- Stripe ConnectStripe Training2025Architecture multipartie et implémentation Connect (Express, Custom) : onboarding KYC, flux de fonds, commissions, reversements automatisés, webhooks idempotents. Marketplaces et plateformes SaaS.
- Stripe BillingStripe Training2025Abonnements et recurring revenue : Payment Intents, Setup Intents, subscription schedules, dunning, migrations, test clocks. Gestion de la TVA multi-pays et conformité SCA/PSD2.
Certifications
- Stripe Developer (Associate)Stripe2026
- Stripe Architect (Associate)Stripe2026