Freelancer profile translated to English.
Back to original languageAbout Sébastien
Agencies sell. I (de)liver.
15+ years coding solo for SMEs, startups, and large accounts (Société Générale, Saint-Gobain, GRDF via OpenSourcing for 11 years). 50+ projects delivered, 95% on time.
WHAT I CAN DO FOR YOU
→ Custom SaaS: MVP in 8 weeks. Multi-tenant architecture, Stripe payment, auth, dashboard.
→ Flutter Mobile Apps: iOS + Android from a single codebase. Stores in 6-10 weeks.
→ Custom Websites: showcase, landing pages, business, e-commerce. Clean code, SEO ready.
→ n8n + AI Automation: workflows connected to your tools (CRM, accounting), autonomous AI agents, business chatbots.
→ Modernization / Takeover: your developer disappeared? Unreadable code? I audit, document, and restart.
WHAT SETS ME APART
→ Solo, truly: I code, I deliver, I document. A single point of contact, no hidden subcontracting.
→ F.A.S.T. Method (Reliability, Agility, Security, Transparency) — 95% of projects on time.
→ Code is yours: you leave with everything (code, infrastructure, data). No vendor lock-in.
→ Long term: 11 years OpenSourcing, 8 years Heracles Coaching, 3 years Papangue Protection. I don't disappear.
REAL CASES
→ Sergos (200+ agents security): -70% planning time, €45K/year saved.
→ TTC France (multi-station radio advertising): processing time ÷ 3, ROI < 3 months.
→ H-UP (mobile breakdown assistance marketplace): patented system, project valued at €250K.
→ Heracles Coaching: mobile app + back-office, in production since 2020.
Stack: React, Next.js, TypeScript, Node.js, Flutter, Laravel, Symfony, n8n, OpenAI/Claude, PostgreSQL, Supabase, Stripe, Docker, AWS.
100% remote, based in Reunion Island (since 2010). Accustomed to clients in France + international.
Free quantified brief in 10 min at sebastiendebollivier.com/simulateur. YES/NO on-site. If YES, quote within 48 hours.
English
Fluent
French
Native or bilingual
Remote only
Primarily works remotely
Experience
- Dad DeveloperFounder & DeveloperJanuary 2017 - Today (9 years and 5 months)RéunionSolutions developed:• Administrative Automation (DPAE, Contracts, Scheduling, Invoicing, Reminders, Electronic Signature)• AI Voice Agents (Phone reception, appointment booking)• Online booking systems (Vehicle rental, Sports halls)• Custom business CRM• Business mobile application
- H-up plateforme de mise en relationCTOMarch 2024 - Today (2 years and 3 months)RéunionOur mission: connect stranded drivers and qualified tow trucks in real-time, reduce intervention times, and offer total transparency on prices and service quality.
- proPulseCTOJanuary 2015 - November 2018 (3 years and 10 months)proPulse makes local businesses visible where their customers are. Manage your information on 40+ platforms (Google Maps, Waze, Facebook, Yellow Pages, Yelp, TripAdvisor...) from a single dashboard. Your website synchronizes automatically. All your customer reviews centralized. Respond everywhere from one place. Fast. Simple.
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Education
- Development, Network, ManagementSUPINFO2009Développement, Réseau, Management
- BTS, Development, Project ManagementCNED2004BTS, Développement, Gestion de projet