API & Backend DevelopmentGael de Nicodemo Serrano Hernandez
I design, develop, debug and extend backend systems and APIs that power web and mobile applications.
I can build backend services from scratch, extend an existing backend, connect an application to external APIs or investigate problems inside an established backend architecture.
My backend work focuses on the logic behind the application: data, validation, authorization, integrations, processing and reliable communication between systems.
I can help with:
• REST API development
• API architecture
• Python/FastAPI backend development
• Authentication
• Authorization and RBAC
• Database integration
• PostgreSQL
• Supabase
• Business logic
• Data validation
• CRUD operations
• External API integrations
• Webhooks
• Background jobs
• Asynchronous processing
• File processing
• Error handling
• API debugging
• Database-related issues
• Performance optimization
• Backend refactoring
For new systems
I can help define the API structure, data model, business logic and integration strategy before implementation.
For existing systems
I can investigate incorrect responses, failing endpoints, authentication problems, data inconsistencies, performance issues and unexpected behavior before implementing changes.
A typical implementation may include:
Requirements → Data model → API design → Backend implementation → Integration → Testing → Deployment support.
I can also work as a backend specialist inside a larger development team when the frontend already exists.
FAQs
Gael de Nicodemo's other services
Contact for pricing
Duration4 weeks
Tags
FastAPI
Python
Supabase
API Development
Backend Engineer
Rest API
Service provided by
Gael de Nicodemo Serrano Hernandez proOluta, Mexico
API & Backend DevelopmentGael de Nicodemo Serrano Hernandez
Contact for pricing
Duration4 weeks
Tags
FastAPI
Python
Supabase
API Development
Backend Engineer
Rest API
I design, develop, debug and extend backend systems and APIs that power web and mobile applications.
I can build backend services from scratch, extend an existing backend, connect an application to external APIs or investigate problems inside an established backend architecture.
My backend work focuses on the logic behind the application: data, validation, authorization, integrations, processing and reliable communication between systems.
I can help with:
• REST API development
• API architecture
• Python/FastAPI backend development
• Authentication
• Authorization and RBAC
• Database integration
• PostgreSQL
• Supabase
• Business logic
• Data validation
• CRUD operations
• External API integrations
• Webhooks
• Background jobs
• Asynchronous processing
• File processing
• Error handling
• API debugging
• Database-related issues
• Performance optimization
• Backend refactoring
For new systems
I can help define the API structure, data model, business logic and integration strategy before implementation.
For existing systems
I can investigate incorrect responses, failing endpoints, authentication problems, data inconsistencies, performance issues and unexpected behavior before implementing changes.
A typical implementation may include:
Requirements → Data model → API design → Backend implementation → Integration → Testing → Deployment support.
I can also work as a backend specialist inside a larger development team when the frontend already exists.
FAQs
Gael de Nicodemo's other services
Contact for pricing