Upwork home
Sign up
Project Catalog
DesignDesign
Video & AudioVideo & Audio
Development & ITDevelopment & IT
MarketingMarketing
Writing & TranslationWriting & Translation
MoreMore

You will get fix bugs in your FastAPI application and backend APIs

Danyal Z.Status: Offline
Danyal Z. Danyal Z.
4.5
Preview image

Let a pro handle the details

Buy Web Application Programming services from Danyal, priced and ready to go.
Danyal Z.Status: Offline
Danyal Z. Danyal Z.
4.5
Preview image

Let a pro handle the details

Buy Web Application Programming services from Danyal, priced and ready to go.

Project details

Experiencing issues with your FastAPI application or backend APIs?

I will identify the root cause, implement a reliable fix, and thoroughly test the solution to ensure your application works as expected.

Whether it's API errors, authentication issues, database problems, deployment issues, or unexpected application behavior, I focus on delivering clean, maintainable, and production-ready fixes.

What you'll get:
• Professional debugging and troubleshooting
• Root cause analysis
• Reliable bug fixes
• Testing and validation
• Clear communication throughout the project

Let's get your application back up and running efficiently.
Programming Languages
PHP, JavaScript, Python
Coding Expertise
Cross Browser & Device Compatibility, Performance Optimization, Security
What's included
Service Tiers Starter
$15
Standard
$25
Advanced
$45
Delivery Time 1 day 2 days 4 days
Number of Revisions
124
Number of Pages
137
Design Customization
Content Upload
Responsive Design
Source Code

Frequently asked questions

4.5
3 reviews
67% Complete
(2)
33% Complete
(1)
1% Complete
(0)
1% Complete
(0)
1% Complete
(0)

KD

Katherine D.
5.00
Feb 15, 2022
Front End Developer Danyal did a great job on my project (front end development). He worked diligently to meet our deadline and the finished product was very high-quality.

AG

Andrea G.
3.50
Nov 4, 2020
SE implementation with Elasticsearch A little miscomprehension on specific work to do but he was cooperative and understanding

AH

Ann H.
5.00
Jan 24, 2019
Front-End Solid, responsible, skilled freelancer. Do not hesitate to hire him.
Danyal Z.Status: Offline

About Danyal

Danyal Z.Status: Offline
Senior Backend Engineer | Python, PHP, API, AWS, PostgreSQL & Docker
4.5  (3 reviews)
Bhalwal, Pakistan - 4:13 am local time
I help businesses build AI-powered applications, automate workflows, and deploy scalable systems that are reliable in production.

With experience in FastAPI, Python, React, Docker, Kubernetes, CI/CD pipelines, and cloud infrastructure, I work with startups and growing businesses to turn ideas into production-ready solutions.

Whether you need an AI-powered application, internal business system, custom dashboard, workflow automation, API integration, or a complete deployment pipeline, I can help from planning to production.

What I can help with:

• AI-Powered Applications
• Business Systems & Internal Tools
• FastAPI Backend Development
• React Frontend Development
• Workflow Automation
• API Development & Integration
• Docker & Kubernetes
• CI/CD Pipeline Setup
• Cloud Deployment & Infrastructure
• System Architecture & Scaling

I focus on building solutions that reduce manual work, improve efficiency, and support long-term business growth.

Steps for completing your project

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

Delivery time starts when Danyal receives requirements from you.

Danyal works on your project following the steps below.

Revisions may occur after the delivery date.

Review the Issue

I will review the bug report, error logs, screenshots, and project details to understand the issue and its impact.

Root Cause Analysis

I will investigate the application, identify the root cause of the bug, and determine the best solution.

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