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English
$
USD
I will fix nodejs, nextjs, reactjs, mongodb, and optimize performance
Janar
5.0
5.0
About this gig
Fix Node.js, Next.js, React.js & MongoDB Errors Boost Performance!
Struggling with app errors or slow performance? Ill fix it! With 8+ years of experience, I specialize in debugging and optimizing applications built with Node.js, Next.js, React.js, and MongoDB. Whether you're dealing with unexpected crashes, slow load times, or inefficient code, Im here to help!
What I Offer:
Fix backend & frontend bugs
Debug API, database, & state management issues
Optimize performance for faster load times
Refactor messy code for scalability
Resolve deployment & configuration problems
Why Choose Me?
Expert Debugging I identify and fix even the most complex issues.
Performance Optimization Your app will be faster, smoother, and more efficient.
Clean & Maintainable Code No quick hacks, only high-quality solutions.
Fast & Reliable Delivery Quick turnaround without compromising quality.
Post-Delivery Support Guidance to keep your app running flawlessly.
Perfect For:
Fixing backend or frontend crashes.
Resolving database performance bottlenecks.
Debugging broken features or API issues.
Let me fix your app issues and boost its performanceso you can focus on growing your business!
Get to know Janar
Janar
Expert in Web and Desktop Applications
- FromBangladesh
- Member sinceMay 2018
- Avg. response time3 hours
- Last delivery2 weeks
Languages
English
With 8+ years of experience, I craft powerful web and desktop applications that help businesses thrive. I specialize in eCommerce, POS systems, inventory management, hospital management software, and automation tools. Whether you need a custom-built solution or an upgrade to an existing system, I deliver high-performance, scalable, and reliable software tailored to your needs—turning your ideas into reality with precision and innovation.
Other Software Development Services I Offer
Reviews
2 reviews for this Gig
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Rating Breakdown
- Seller communication level
- Recommend to a friend
- Service as described
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Most relevant
B bhperdeep
Repeat Client
United States
Thanks Janar for your great help.
Helpful?B bhperdeep
Repeat Client
United States
The Janar is champion problem solver. Can be relied on when projects have a hard deadline. He goes the extra mile to ensure technical issues are resolved within time and manages all technical challenges systematically and notes down guidelines for future scenarios. Never displays negative attitude despite being overwhelmed at times. Thanks Janar!
Helpful?
Reviews
2 reviews for this Gig
| (2) | ||
| (0) | ||
| (0) | ||
| (0) | ||
| (0) |
Rating Breakdown
- Seller communication level
- Recommend to a friend
- Service as described
Sort By
Most relevant
B bhperdeep
Repeat Client
United States
Thanks Janar for your great help.
Helpful?B bhperdeep
Repeat Client
United States
The Janar is champion problem solver. Can be relied on when projects have a hard deadline. He goes the extra mile to ensure technical issues are resolved within time and manages all technical challenges systematically and notes down guidelines for future scenarios. Never displays negative attitude despite being overwhelmed at times. Thanks Janar!
Helpful?
