Freelancer profile translated to English.
Back to original languageAbout Lissam
I build the technical foundations on which mobile and web applications grow. Specialized in complex systems that need to handle thousands of users without slowing down.
My expertise:
Secure multi-tenant architectures
Advanced spatial geolocation (PostGIS)
Payment integrations (Stripe Identity & Connect)
Security and integration testing
Scaling and performance optimization
Recent projects:
- B2B SaaS platform for multi-client Google Business optimization (digicalend.com)
- Collaborative logistics marketplace with geolocation (kimiavillage.com)
Services:
Backend development from scratch
Architecture and design system
Code audit & optimization
Complex third-party service integration
Available: France and international | Quick response!
French
Native or bilingual
English
Conversational
Can work on-site
Paris (up to 50km)
Experience
- KimiaMobile and Backend DeveloperIMPORT AND EXPORTOctober 2025 - Today (10 months)Paris, FranceEarn money while traveling and ship your package cheaper and faster.->- C# Backend with spatial geolocation (PostGIS)- Stripe Integration (Identity + Connect)- Apple Store/Google Play publication management (rejection resolutions)- React Native API integration
- DigiCalendFullStack DeveloperE-COMMERCEAugust 2025 - December 2025 (4 months)Paris, FranceWe optimize your Google Business profile for your beauty salon. A 100% branded website whether you are a hair salon, beauty institute, manicure...B2B SaaS ->- C# Backend from scratch with multi-tenant architecture.- Cross-tenant integration and security testing- Scalability validation (thousands of tenants)
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Education
- Scientific BaccalaureateNeimane School2022Baccalaureate Scientifique
- Bachelor of ScienceESIEA - School of Engineers for Useful Digital Technology2025Bachelor of Science