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I will build high performance golang backend apis for web and mobile apps
Md Kawsar
About this gig
Are you looking for a fast, secure, and scalable Golang backend for your application?
You are in the right place.
I am a Golang backend developer experienced in building high-performance APIs and scalable backend systems for web and mobile applications.
Whether you need to build a new backend, develop REST APIs, or improve your existing Golang backend, I focus on clean code, performance, and long-term maintainability.
What I Offer:
- Golang backend development
- REST API development using Golang
- Backend bug fixing and optimization
- Secure authentication (JWT, roles)
- Database integration (MySQL, PostgreSQL, MongoDB, SQLite)
- Scalable and performance-optimized APIs
️Tech Stack:
Golang (Go), Gin, Fiber, Echo, MySQL, PostgreSQL, MongoDB, Firebase, Superbase, Redis, Docker
Backend for:
- Web applications (HTML, CSS, JavaScript, React)
- Mobile apps (Android, Flutter)
Why Choose Me:
- Clean and maintainable code
- Scalable backend architecture
- Performance-focused solutions
- Reliable communication
If you are not sure which package fits your needs, feel free to message me before placing an order.
Lets build a powerful and reliable backend for your project.
Get to know Md Kawsar
Md Kawsar
Full Stack Mobile And Web Application Developer
- FromBangladesh
- Member sinceJul 2025
Languages
Bengali, Hindi, English
I’m a full-stack Android and web application developer with experience in building and maintaining real-world projects.
App Development: Flutter and Java
Web Development: HTML, CSS, JavaScript, Tailwind CSS, React
Backend: Golang, PHP, Python
Databases: MySQL, MongoDB, SQLite, PostgreSQL, Superbase, Firebase, Firestore
AI Automation: n8n, Custom Automation
I mostly work on building simple applications, REST APIs, and websites, as well as fixing bugs and improving existing projects. I focus on clean code, clear communication, and practical solutions. Feel free to message me anytime.
My Portfolio
FAQ
Why should I choose Golang for my backend?
Golang is fast, lightweight, and highly scalable. It is perfect for APIs, microservices, and applications that need high performance. Many companies choose Golang for its stability and low resource usage.
Will my backend be secure?
Yes. I implement proper authentication, validation, and security measures. This includes JWT, role-based access, and protection against common vulnerabilities.
What do you need from me to start the work?
I will need a clear description of your requirements. If you already have code, please share repository access or files.
Can you work with existing projects or fix bugs?
yes. I can work on existing Golang projects, fix bugs, improve performance, add new features, or refactor code when needed.
Is frontend included in the package?
Basic fronted (HTML, CSS, JavaScript, Tailwind, or React) or Flutter/Android integration can be included depending on the selected package. For larger fronted work, a custom offer is recommend.
Do you write clean and maintainable code?
Yes. I follow clean architecture and best practices. My code is easy to understand, maintain, and extend in the future.
What if my project is bigger than the package?
No problem. If you requirements exceed the package scope, I will send you a custom offer based on your project needs.
Do you offer custom pricing or custom features?
Yes. If your project requirements are different from the listed packages, I can create a custom offer based on your needs, scope, and complexity. Please message me before ordering so we can discuss the best solution.
Are you suitable for small or startup projects?
Absolutely, I work with small project, MVPs, and startup ideas. If you are building your first version or testing an ides, I can help you with a clean, scalable, and cost-effective backend solution.
