REST APIs
Clear request and response contracts, validation, error handling and versioned routes when appropriate.
I build backend services for web products, internal tools and SaaS applications. I focus on clear boundaries, maintainable code, predictable data flows and the operational basics needed to run the service in production.
Go · Gin · Python · FastAPI · PostgreSQL · Redis · SQLAlchemy · Docker · REST · JWT · OAuth · Webhooks
The exact combination depends on the project. These are the areas I can cover directly.
Clear request and response contracts, validation, error handling and versioned routes when appropriate.
JWT, OAuth flows, roles, permissions and secure account operations.
PostgreSQL schema design, migrations, SQL, SQLAlchemy where appropriate and Redis for cache or ephemeral state.
Workers, queues, scheduled processing and concurrency patterns for tasks that should not block requests.
Payments, email, third-party APIs, webhooks and external service synchronization.
Configuration, Docker, logging, health checks, migrations and deployment-oriented project structure.
I review the product flow, existing architecture and constraints.
I build the module or service with tests and migrations where applicable.
I connect it to the frontend or external systems and prepare deployment details.
Small focused tasks can start from $150. Websites, features and integrations typically start from $400. Larger MVP and custom backend work starts from around $1,200, depending on scope.
Yes. I can add features, fix bugs, refactor a module or improve database and API behavior without rebuilding the whole system.
It depends on the workload and delivery goals. Go is a strong fit for efficient services and concurrency; FastAPI is useful when fast iteration, automation or Python ecosystem integration matters.
Yes. I work with both and can design how persistent and temporary data should be separated.
Yes. I can prepare Docker and Docker Compose workflows for development and deployment.