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I will build and fix golang rest apis, gin backends and microservices
Hammad Afzal
4.9
4.9
About this gig
Need a reliable Golang backend, REST API or microservice? I build, fix and improve Go services with clean code, tests and clear documentation.
What I can deliver:
- REST APIs in Go (Golang) with Gin
- PostgreSQL/MySQL integration, GORM and Redis
- Authentication, validation and secure endpoints
- Swagger/OpenAPI docs and unit tests
- gRPC services, Docker setup and performance fixes
- Node.js-to-Go API migration and refactoring
I have 7+ years of software engineering experience building scalable backend systems. My Fiverr clients have specifically praised my Go API testing and Node.js-to-Golang migration work.
Every order has a clearly agreed scope, source code and practical handover notes. API endpoints, integrations and migrations are priced by complexity.
Please send your requirements, existing repo (if any), sample requests/responses and deployment needs before ordering.
Get to know Hammad Afzal
Hammad Afzal
Full Stack Developer
- FromPakistan
- Member sinceAug 2023
- Avg. response time1 hour
- Last delivery1 year
Languages
Urdu, English
Hi! I’m Hammad Afzal, a Senior Full Stack Engineer specializing in architecting and delivering scalable and production-ready applications. My expertise spans the entire development lifecycle, from designing high-performance backends with Golang and Node.js to building dynamic user interfaces with React.js and Next.js. I've successfully delivered solutions for Fortune 500 companies and fast-growing startups, leveraging my deep knowledge of AWS, GCP, and Docker for robust deployments.
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Other Software Development Services I Offer
FAQ
What Golang development services do you offer?
I develop custom Golang REST APIs, backend services, and microservices using Go, Gin, GORM, PostgreSQL, MySQL, Redis, and Docker. I also offer API debugging, performance optimization, and backend modernization.
Can you build a REST API from scratch using Golang?
Yes! I can design and develop scalable REST APIs using Go and the Gin framework. This includes database integration, authentication, CRUD operations, input validation, error handling, and API documentation.
Can you fix bugs or optimize my existing Golang application?
Absolutely! I can troubleshoot existing Go applications, fix API errors, optimize database queries, improve performance, refactor code, and resolve backend integration issues.
Can you migrate my existing Node.js or Python backend to Golang?
Yes. I can migrate existing Node.js or Python APIs to Golang while preserving functionality and improving maintainability. I can also help with incremental migration to minimize disruption to your application.
Do you provide database integration and authentication?
Yes! I work with PostgreSQL, MySQL, Redis, and other databases. I can implement JWT authentication, role-based access control (RBAC), database migrations, and secure API endpoints.
Can you develop Golang microservices using Docker and gRPC?
Yes. I can build Dockerized Golang microservices, implement REST or gRPC communication, and integrate services with existing systems. Cloud deployment and infrastructure setup can also be included based on your requirements.
Will you provide source code, tests, and API documentation?
Yes. I deliver clean, maintainable Golang source code. Depending on your selected package, I can also include unit tests, integration tests, Swagger/OpenAPI documentation, and deployment instructions.
What do you need from me before starting the project?
Please share your project requirements, API endpoints, database details, expected functionality, and existing code repository (if available). For complex Golang backend projects, I recommend messaging me before placing an order.
Reviews
6 reviews for this Gig
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Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
Sort By
Most relevant
J 
jlf717
United States
This is my first project with Hammad. I was very pleased with the way things went and hope to be able to work with him again. :-)
$200-$400
Price
7 days
Duration
Helpful?U user06877398
Luxembourg
Fast and proactive work. Despite the short time frame, Hammad successfully completed the project. He consistently kept me updated on progress and never hesitated to reach out to ensure the work met my expectations. Polite, patient, and professional, he took the time to fully understand my requirements and implement the project accurately.
$200-$400
Price
5 days
Duration
Helpful?F francoriba327
Argentina
I've asked for test git my go Api and he did a great job
$50
Price
4 days
Duration
Helpful?A 
alicia_009
United Kingdom
Hammad did an awesome job re-writing a quite large Node.js API into a Go Lang version. His code was neat, tested and of the most part functional. Everything was well structured, followed good practices and covered by unit tests. I was very impressed at his ability to understand the task, work independently...
$200-$400
Price
13 days
Duration
Helpful?N 
nericarcasci
Ireland
Exceptional job. Hamman is a pleasure to work with. Very professional and good spirited. Highly recommend his services.
$50-$100
Price
6 days
Duration
Helpful?
Reviews
6 reviews for this Gig
| (6) | ||
| (0) | ||
| (0) | ||
| (0) | ||
| (0) |
Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
Sort By
Most relevant
J jlf717
United States
This is my first project with Hammad. I was very pleased with the way things went and hope to be able to work with him again. :-)
$200-$400
Price
7 days
Duration
Helpful?U user06877398
Luxembourg
Fast and proactive work. Despite the short time frame, Hammad successfully completed the project. He consistently kept me updated on progress and never hesitated to reach out to ensure the work met my expectations. Polite, patient, and professional, he took the time to fully understand my requirements and implement the project accurately.
$200-$400
Price
5 days
Duration
Helpful?F francoriba327
Argentina
I've asked for test git my go Api and he did a great job
$50
Price
4 days
Duration
Helpful?A alicia_009
United Kingdom
Hammad did an awesome job re-writing a quite large Node.js API into a Go Lang version. His code was neat, tested and of the most part functional. Everything was well structured, followed good practices and covered by unit tests. I was very impressed at his ability to understand the task, work independently...
$200-$400
Price
13 days
Duration
Helpful?N nericarcasci
Ireland
Exceptional job. Hamman is a pleasure to work with. Very professional and good spirited. Highly recommend his services.
$50-$100
Price
6 days
Duration
Helpful?
