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Fiverr Pro
English
$
USD
Kelvin S
@kelvin_smith82
I build secure, scalable API integrations and SaaS backends that just work
United States
English, Spanish
About me
I’m an experienced API Integration Specialist helping businesses build secure, scalable, and high-performance backend systems.
If you're struggling with complex integrations, broken APIs, or unreliable payment systems I design and implement production ready solutions that actually work and scale.
What I specialize in:
1. Stripe API integration
2. REST API & custom API development
3. OAuth2 & JWT authentication systems
4. Payment gateway integration & subscription billing
5. Supabase & Firebase backend integration
Kindly message me now to get started!
Skills
Kelvin S
Offline •
Average response time: 1 hour
See my services
API & Integrations
I will build saas backend, nodejs API, oauth2, stripe checkout, supabase deployment
Fashion Illustration
I will create clothing tech pack, fashion flat sketch and technical sketch for you
