Backend API Development & Integration

Yusuf Akinleye

Starting at

$

2,499.99

About this service

Summary

I design and build backend APIs using Go, Python (FastAPI), JavaScript, and TypeScript, with support for PostgreSQL, MongoDB, and gRPC.
I focus on writing clean, maintainable code that’s easy to integrate and works reliably under real-world conditions.
What sets me apart is my practical approach, which involves balancing performance, clarity, and developer friendliness in everything I build.

Process

Discovery Call – We'll discuss your requirements, data flow, and technical goals.
API Architecture & Planning – I’ll define the endpoint structure, models, and authentication flow.
Development & Integration – APIs are developed and connected to your databases or external systems.
Testing & Documentation – Every API is tested and documented using Swagger or Postman.
Deployment (Optional) – I offer Docker setup and CI/CD deployment on your preferred platform.

FAQs

  • Will my API be secure and scalable?

    I implement clean architecture, token-based auth (JWT/OAuth), and robust error handling for scale and security.

  • Do you support frontend or mobile integration?

    I can coordinate with your frontend/mobile team or test API connections.

  • Is documentation included?

    Yes. Swagger/OpenAPI docs or a Postman collection is always provided.

  • Can you deploy the backend?

    Deployment using Docker and essential CI/CD pipelines is available if needed.

What's included

  • Custom API Backend

    Fully functional API with clean architecture, modular code, and full integration support. Includes two revision rounds and endpoint documentation.

  • Database Integration

    Efficient schema design and integration using ORM or native queries. Includes setup scripts and migration support.

  • Continuous Integration (CI)

    Docker-based setup for streamlined deployment, improving scalability and system reliability.

  • External Service Integration

    Connect to third-party or internal services using REST or gRPC with error handling and retries.

  • API Documentation

    Swagger (OpenAPI) or Postman collection with clear descriptions, sample requests, and auth setup.

Duration

2 weeks

Skills and tools

Backend Engineer

AI Developer

Software Engineer

Golang

Golang

JavaScript

JavaScript

MongoDB

MongoDB

PostgreSQL

PostgreSQL

Python

Python

Industries

Other
E-Commerce
Healthcare

More services

Full-Stack Web Development & API Integration

STARTING AT

$3,999.99

fixed rate

Frontend Development & UX Design

STARTING AT

$1,999.99

fixed rate

Technical Docs That Developers Actually Read

STARTING AT

$1,499.99

fixed rate