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You will get your API fixed fast

Daniel F.Status: Offline
Daniel F.
Preview image

Let a pro handle the details

Buy Web Programming Bug Fixes services from Daniel, priced and ready to go.
Daniel F.Status: Offline
Daniel F.
Preview image

Let a pro handle the details

Buy Web Programming Bug Fixes services from Daniel, priced and ready to go.

Project details

I help clients fix broken Node.js API integrations quickly and cleanly. This project is designed for backend issues like failed requests, unreliable webhooks, bad data mapping, sync problems, auth failures, and other integration bugs that disrupt production. What sets this project apart is that I do not just patch the visible symptom. I trace the issue, identify the real failure point, and make the fix in a way that improves reliability. That can include better validation, clearer logging, retry handling, or cleanup around the affected flow. This is a strong fit if you already have an existing backend and want a focused repair from someone who is comfortable working inside real codebases, not just building from scratch.
Programming Languages
HTML & CSS, JavaScript, TypeScript
Coding Expertise
Performance Optimization, Security
What's included
Service Tiers Starter
$150
Standard
$450
Advanced
$900
Delivery Time 2 days 4 days 7 days
Number of Revisions
244
Bug Investigation
Fix Documentation
Detailed Code Comments
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Frequently asked questions

Daniel F.Status: Offline

About Daniel

Daniel F.Status: Offline
Backend Automation Engineer | APIs, Integrations, Internal Tools
Stockholm, Sweden - 10:21 pm local time
Businesses bring me in when a workflow is manual, an integration is brittle, or a backend is slowing delivery down. I build APIs, automations, and internal tools that remove repetitive work, stabilize messy systems, and make teams faster.

I have 10+ years of experience as a fullstack engineer, with backend automation as my primary service line. Most of my work centers on Node.js and TypeScript services, API integrations, PostgreSQL, debugging, and production maintenance. I can work across the stack when needed, but I focus first on reliable backend delivery.

Typical projects I help with:
- API integrations and backend services
- Internal tools, scripts, and workflow automation
- Debugging, maintenance, and performance or stability fixes

If you need a backend engineer who can quickly understand an existing system, reduce risk, and ship pragmatic improvements, message me on Upwork to discuss scope.

Steps for completing your project

After purchasing the project, send requirements so Daniel can start the project.

Delivery time starts when Daniel receives requirements from you.

Daniel works on your project following the steps below.

Revisions may occur after the delivery date.

Review your requirements, code access, logs, and error details.

Reproduce or isolate the issue in the affected integration flow.

Review the work, release payment, and leave feedback to Daniel.