I will fix node js bugs express routing and mongodb errors


Sobre este Serviço
If your Node.js server is crashing, your APIs are returning 500 errors, or your database queries are stuck, I am here to help you deploy a clean fix today.
I am a backend engineer with hands-on experience building and debugging scalable Node.js applications. I don't just patch errors blindly; I find the root cause of the issue, optimize the logic, and ensure it doesn't break your system again.
What I deal with every day:
- Server & Runtime Bugs: Fixing unhandled promise rejections, memory leaks, npm version mismatches, and .env setup issues.
- API & Route Debugging: Fixing broken Express.js routes, CORS policy issues, incorrect JSON formatting, and body-parser errors.
- Auth & Middleware: Troubleshooting JWT token expiration, passport.js strategies, and custom middleware blockages.
- Database Queries: Optimizing slow MongoDB/Mongoose aggregations, fixing PostgreSQL/MySQL connection pools, and schema validation bugs.
- Deployment & Logs: Reading PM2 logs, fixing Heroku/AWS/DigitalOcean deployment errors.
Please send me a message with your error logs before placing an order. Let's get your backend running smoothly!
Respeite os direitos de terceiros
Esteja atento ao fato que é contra as políticas do prestador da Fiverr incluir temas, modelos ou outros elementos no trabalho entregue que infrinjam os direitos de terceiros ou leis aplicáveis. Leia mais em nosso Guia de Criação Digital Responsável.
Conheça mais sobre Hasnain Hyder
Backend Developer
- A partir dePaquistão
- Membro desdefev. de 2023
- Responde em aprox.:1 hora
Idiomas
Sindi, Urdu, Inglês
Perguntas frequentes
What do you need from me to start fixing the bug?
I will need a clear description of the bug (with screenshots or error logs if possible), and access to your codebase (GitHub repository or zip file).
Can you fix the issue urgently?
Yes, if your server is down or it's a critical production error, please message me immediately. I offer express delivery to resolve urgent issues.

