You will get reliable API integrations and backend automation for your business
Project details
If you need an API connected, a broken integration repaired or a backend workflow automated, I can help.
I work on practical backend problems involving REST APIs, webhooks, authentication, data synchronisation, error handling, database connections and system-to-system automation. I can build a new integration or investigate an existing one that is failing, returning incorrect data or behaving unreliably.
You will receive working source code, thorough testing, setup notes and a clear explanation of what was changed. I focus on maintainable solutions with proper validation, logging and failure handling—not temporary patches that become difficult to support later.
Please contact me before ordering if your project involves several systems, an undocumented API, production access or unusual security requirements. I will review the scope and help you select the correct package.
I work on practical backend problems involving REST APIs, webhooks, authentication, data synchronisation, error handling, database connections and system-to-system automation. I can build a new integration or investigate an existing one that is failing, returning incorrect data or behaving unreliably.
You will receive working source code, thorough testing, setup notes and a clear explanation of what was changed. I focus on maintainable solutions with proper validation, logging and failure handling—not temporary patches that become difficult to support later.
Please contact me before ordering if your project involves several systems, an undocumented API, production access or unusual security requirements. I will review the scope and help you select the correct package.
Programming Languages
JavaScript, Python, TypeScriptWhat's included
| Service Tiers |
Starter
$59
|
Standard
$149
|
Advanced
$299
|
|---|---|---|---|
| Delivery Time | 2 days | 4 days | 7 days |
Number of Revisions | 1 | 2 | 3 |
Number of Pages | 0 | 0 | 0 |
Design Customization | - | - | - |
Content Upload | - | - | - |
Responsive Design | - | - | - |
Source Code |
Optional add-ons
You can add these on the next page.
Fast Delivery
+$30 - $150
Additional Revision
+$30Frequently asked questions
About Khalid
Senior Automation, API & Backend Developer
London, United Kingdom - 12:08 am local time
I work with n8n, APIs, webhooks, Node.js, JavaScript, PostgreSQL, Supabase, data pipelines, and AI/LLM integrations.
I can help with:
• Complex n8n automation and workflow development
• Broken automation diagnosis and recovery
• API and webhook integrations
• Node.js backend debugging and repair
• PostgreSQL and Supabase integrations
• Data and integration pipelines
• OpenAI and LLM backend integrations
• Retry logic, validation, error handling and reliability hardening
• Multi-system business integrations
• Migration and refactoring of existing systems
My approach is practical: understand the problem, diagnose it from evidence, implement the safest solution, test it properly, and verify that the final system works as expected.
I’m especially suited to projects where an existing system is broken, unreliable, complex, or needs several services to work together correctly.
Steps for completing your project
After purchasing the project, send requirements so Khalid can start the project.
Delivery time starts when Khalid receives requirements from you.
Khalid works on your project following the steps below.
Revisions may occur after the delivery date.
Review requirements and acces
I review the requirements, documentation, source code, logs and available test access. I confirm that the requested work matches the selected package.
Diagnose and plan the solution
I reproduce the issue or map the integration, identify the root cause and determine the safest implementation approach before changing the system.