You will get I will fix bugs, errors or performance issues in your Node.js backend
Project details
I will analyze and fix any bugs, errors, or performance issues in your Node.js backend.
I work with Express, NestJS, TypeScript, PostgreSQL, MongoDB and REST APIs.
I can resolve crashes, broken endpoints, deployment errors, memory leaks, CORS issues or slow queries.
You get fast communication, clean fixes, and detailed explanations of what was solved.
I work with Express, NestJS, TypeScript, PostgreSQL, MongoDB and REST APIs.
I can resolve crashes, broken endpoints, deployment errors, memory leaks, CORS issues or slow queries.
You get fast communication, clean fixes, and detailed explanations of what was solved.
Programming Languages
PHP, JavaScript, TypeScriptCoding Expertise
Performance Optimization, SecurityWhat's included
| Service Tiers |
Starter
$50
|
Standard
$90
|
Advanced
$150
|
|---|---|---|---|
| Delivery Time | 1 day | 2 days | 3 days |
Number of Revisions | 1 | 2 | 3 |
Bug Investigation | |||
Fix Documentation | - | - | |
Detailed Code Comments | - | - | - |
Optional add-ons
You can add these on the next page.
Additional Revision
+$20
Detailed Code Comments
(+ 1 Day)
+$30Frequently asked questions
About Andrew
Senior Backend Developer | NestJS, Node.js, PostgreSQL, APIs
Kyiv, Ukraine - 7:41 am local time
I build reliable, scalable, production-grade server-side applications, fix complex backend issues, and integrate external APIs with clean architecture and maintainable code.
What I can build for you
- Modular NestJS architectures
- Secure authentication (JWT, OAuth2, Cognito)
- REST APIs with clean folder structure
- PostgreSQL schema design + query optimization
- Microservices & event-driven backend (RabbitMQ/SQS)
- Third-party integrations (Stripe, PayPal, CRM, Google APIs)
- Debugging, refactoring, performance improvements
- Deployment-ready backends (Docker, CI/CD)
Why clients work with me
- Clean, maintainable TypeScript code
- Strong communication & fast delivery
- Ability to quickly understand existing codebases
- Experience with production-level systems
- 100% focus on solving the right problem — not adding complexity
If you need a backend engineer who can deliver strong architecture, reliable APIs, and real results, let’s work together.
Steps for completing your project
After purchasing the project, send requirements so Andrew can start the project.
Delivery time starts when Andrew receives requirements from you.
Andrew works on your project following the steps below.
Revisions may occur after the delivery date.
Identify the issue
You provide details and I reproduce the bug in my environment.
Fix & optimize
I repair the bug and improve stability or performance where needed.