API & Integration Integration Support

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About this service

Summary

I help businesses connect systems, automate workflows, and extend the functionality of their applications through custom API development and third-party integrations. Whether you need to integrate payment gateways, CRMs, or other services, or build reliable REST/GraphQL APIs for your internal or external applications, I deliver clean, maintainable code with thorough documentation and testing.
My services include creating endpoints, integrating third-party APIs, automating data flows, and providing deployment-ready solutions, along with optional ongoing support to keep your systems running smoothly.

What's included

  • API Development

    Custom API endpoints for your client’s application (REST or GraphQL) Authentication & Authorization (OAuth2, API keys, JWT, role-based access) Documentation: Swagger/OpenAPI or written summary so client or dev team can consume the API Test Coverage: Unit tests, integration tests, or Postman collection

  • API Integration

    Third-party API integration (e.g., payment gateways, DocuSign, AWS SES, external CRMs) Data mapping & transformation between client’s system and external API Error handling & logging for smooth operation Monitoring & Alerts: Optional, depending on scope

  • Workflow Automation

    Trigger-based actions: e.g., when a new order is created → automatically push to accounting system Scheduled tasks / cron jobs: Data sync, batch updates, reporting

  • Deployment & Configuration

    Environment setup: Dev/test/staging deployment ready Documentation of deployment process if needed Optional CI/CD setup (GitHub Actions, Deploybot, Laravel Envoyer)

  • Handover & Knowledge Transfer

    Codebase review & explanation Basic guide for maintenance or future updates

  • Optional Deliverables for Retainers

    Monthly review and bug fixes for API endpoints Updates to third-party integrations as APIs change Small enhancements or automation tweaks


Skills and tools

Backend Engineer

Software Engineer

Web Developer

Git

Git

Laravel

Laravel

MySQL

MySQL

PHP

PHP

Vue.js

Vue.js

Industries

Computer Software
E-Commerce
FinTech & Payments