I will fix or build API integrations for your web app

A
assafmalki
A
assafmalki
Assaf M.
fix or build API integrations for your web app
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fix or build API integrations for your web app

About this gig

Need to fix or build an API integration for your web app, backend or automation workflow?


I can help you connect third-party APIs, webhooks, CRMs, payment systems, SaaS tools, databases and custom backend services. I can also debug broken API calls, authentication issues, webhook problems, bad responses, missing data or failed integrations.


I can help with:

REST API integrations

Webhooks and automation triggers

API authentication and tokens

JSON/XML data handling

Backend scripts and endpoints

CRM, SaaS, email, payment or business tool integrations

Database/API logic

Debugging existing API errors


My process:

1. Review the current app, API docs and issue

2. Identify the best integration approach

3. Build or fix the API connection

4. Test requests, responses and edge cases

5. Provide clean source code and handover notes


Please message me before ordering so I can review the API documentation and confirm the right package.

  • Expertise

    • Debugging
    • Security
    • Databases
    • Source control
    • Testing procedures

  • Programming language

    • Python

  • Frontend framework

    • AngularJS
    • Bootstrap
    • jQuery
    • React.js
    • Tailwind CSS

  • Backend framework

    • Django
    • Laravel
    • Express.js
    • FastAPI
    • Node.js

Get to know Assaf M.

Assaf M.

Full Stack Developer for AI Automation, APIs and Web Apps

5.0(1)
  • FromIsrael
  • Member sinceJul 2015
  • Avg. response time1 hour
  • Last delivery2 years

  • Languages

    English, Hebrew
Hi, I’m Assaf, a senior full-stack developer with 10+ years of experience building web apps, automation tools, API integrations, scraping systems, dashboards, browser extensions and AI workflows. I work with Python, JavaScript, TypeScript, React, Node.js, PHP, databases, Linux and cloud tools. I help businesses build products, fix systems, connect APIs, automate work, extract data and add AI features. Clean code, reliable delivery and clear communication are my priorities.

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