I will fix golang API bugs fast or build scalable backend services


About this gig
Senior Golang Developer | 8+ Years of Building High-Performance Backends
Is your Golang backend slow, throwing errors, or struggling to scale? I specialize in building, optimizing, and debugging robust Go applications that power high-traffic systems. Whether you need clean APIs, microservices, or emergency bug fixes, I can help.
Why Clients Hire Me:
- ️ 7+ Years of Expertise: Built backends handling high traffic.
- ️ Fix Critical Bugs: Fast turnarounds with clean, maintainable code.
- ️ Scalable Architecture: REST APIs, microservices, and database optimization.
- ️ Startup & SaaS Specialist: Helped 10+ teams to build system infrastructure with cost cutting.
Services Include:
- High-Performance Golang Backend Development
- REST API Design and Implementation
- Microservices Architecture & Optimization
- Code Refactoring & Performance Tuning
- Database Design for a robust system & Integration
- Third-Party API Integrations
- Emergency Bug Fixes & Code Reviews
- Technical Consulting & Best Practice Guidance
Let's build something scalable, fast, and reliable together.
Please message me to discuss your project, timeline, and deliverables.
Get to know Mahmudul Hasan
Senior Software Engineer
- FromBangladesh
- Member sinceJun 2013
- Avg. response time2 hours
- Last delivery1 year
Languages
English
FAQ
Why is the review only 3.7 stars if the client was happy?
The client praised my work and said they’d return, but gave a low “value” rating — likely a misclick or expectation mismatch. I take all feedback seriously and always strive for the best!
Do I need to contact you before placing an order?
Yes. It helps ensure we’re aligned on scope, budget, and timelines—especially for custom or larger projects.
Which frameworks or tools do you use?
I primarily work with native Go or the Echo framework and integrate with REST, PostgreSQL, MySQL, Redis, Docker, and more. If you prefer any framework or tools, I can also help you with that.
Can you help fix a bug urgently?
Yes. In the Basic package, I can fix a small issue in less than 24-48 hours. Urgent tasks may be prioritized if discussed beforehand.
Do you offer code reviews?
Yes, I offer in-depth code reviews to enhance your Golang project's efficiency, readability, and adherence to best practices, ensuring robust solutions.
Do you write tests for the code?
Yes, if requested. Unit tests and API tests can be included in Standard or Premium packages. Let’s discuss your needs.
What if I need more than 4 endpoints or a larger project?
I’m happy to create a custom offer tailored to your project scope. Just send a message!
1 reviews for this Gig
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Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
Sort By
E 
emekabandit

Canada
Mahmudul Hasan is exceptional at Go! His professionalism, bug-free work, and quick responsiveness truly exceeded my expectations. Despite the value rating, his expertise and dedication shone brightly—I'll definitely return for more tasks 😊.
Up to $50
Price
1 day
Duration
Helpful?
1 reviews for this Gig
| (0) | ||
| (1) | ||
| (0) | ||
| (0) | ||
| (0) |
Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
Sort By
E 
emekabandit

Canada
Mahmudul Hasan is exceptional at Go! His professionalism, bug-free work, and quick responsiveness truly exceeded my expectations. Despite the value rating, his expertise and dedication shone brightly—I'll definitely return for more tasks 😊.
Up to $50
Price
1 day
Duration
Helpful?

