You will get Go Backend Developer | Scalable REST APIs with PostgreSQL
Project details
Secure, scalable, and maintainable Go (Golang) REST APIs tailored to your project requirements — built with clean architecture, reliable database integration, and a strong focus on security and performance.
Services include:
CRUD APIs, JWT authentication, bcrypt password hashing, RBAC
Request validation, middleware, pagination, search, and filtering
Rate limiting, error handling, and third-party API integration
Database & Performance:
PostgreSQL and SQLx — database design, relationships, efficient SQL queries
Migrations, connection pooling, and performance optimization
Architecture:
Structured backend with separate Handler, Service, Repository, and Database layers
Clean, organized, and easy to maintain or extend
What you'll receive:
Clean, well-documented source code
Tested APIs with proper error handling
Postman-verified functionality before delivery
Whether you need a backend built from scratch, new API features, bug fixes, or performance improvements — I deliver secure, reliable, and production-ready backend solutions.
Services include:
CRUD APIs, JWT authentication, bcrypt password hashing, RBAC
Request validation, middleware, pagination, search, and filtering
Rate limiting, error handling, and third-party API integration
Database & Performance:
PostgreSQL and SQLx — database design, relationships, efficient SQL queries
Migrations, connection pooling, and performance optimization
Architecture:
Structured backend with separate Handler, Service, Repository, and Database layers
Clean, organized, and easy to maintain or extend
What you'll receive:
Clean, well-documented source code
Tested APIs with proper error handling
Postman-verified functionality before delivery
Whether you need a backend built from scratch, new API features, bug fixes, or performance improvements — I deliver secure, reliable, and production-ready backend solutions.
Programming Languages
JavaScript, TypeScript, GoCoding Expertise
Performance Optimization, SecurityWhat's included
| Service Tiers |
Starter
$180
|
Standard
$400
|
Advanced
$900
|
|---|---|---|---|
| Delivery Time | 7 days | 14 days | 21 days |
Number of Revisions | 2 | 3 | 5 |
Number of Pages | 0 | 0 | 0 |
Design Customization | - | - | - |
Content Upload | - | - | - |
Responsive Design | - | - | - |
Source Code |
Optional add-ons
You can add these on the next page.
Fast Delivery
+$50 - $250
Additional Revision
+$30
Additional API Endpoint
(+ 1 Day)
+$50
API Authentication & Authorization
(+ 2 Days)
+$100Frequently asked questions
About Md.
Go Backend Developer | SaaS APIs | PostgreSQL | JWT Auth
Mymensingh, Bangladesh - 6:01 am local time
I provide end-to-end backend development services, from system and database design to API development, authentication, integrations, testing, and deployment support.
My Skills
👉 Backend Development: Go (Golang), RESTful APIs, Clean Architecture, Repository Pattern, Service Layer, Custom Middleware
👉 Authentication & Security: JWT Authentication, Bcrypt Password Hashing, Role-Based Access Control (RBAC), Rate Limiting
👉 Databases: PostgreSQL, SQLx, MySQL, SQLite, SQL Migrations (sql-migrate)
👉 Programming Languages: Go, SQL, TypeScript, JavaScript, Python, C++, Java, Dart
👉 Frontend & Mobile: React.js, Flutter, Tailwind CSS
👉 API Development & Integrations: REST APIs, Payment Gateways (SSLCommerz), Third-party API Integrations
👉 Tools & Platforms: Git, GitHub, Postman, VS Code, Figma, Vercel, PythonAnywhere
👉 Core Concepts: Data Structures & Algorithms, OOP, Software Architecture, System Design Fundamentals
SaaS & Backend Systems
I also have experience building backend systems with:
✅ Multi-role systems such as Admin, Employer/Seller, and User
✅ Role-based and ownership-based permission systems
✅ Subscription and payment workflows
✅ Server-side pagination, search, and filtering
✅ Rate limiting and centralized error handling
✅ Database optimization and API performance improvements
What I Can Help You With:
1. Build a REST API or complete backend from scratch
2. Develop and improve existing Go backend systems
3. Implement authentication and authorization
4. Design and integrate PostgreSQL databases
5. Build SaaS backend functionality
6. Fix API and database-related issues
7. Optimize backend performance and SQL queries
8. Integrate payment gateways and third-party APIs
9. Add pagination, search, filtering, and rate limiting
My Approach
I focus on clean code, secure architecture, maintainability, performance, and clear communication. I follow a structured development approach that keeps business logic, API handlers, services, repositories, and database operations organized and easy to maintain. I treat every project as if I'll be the one maintaining it a year from now.
Availability :
⏱ Available for full-time projects and long-term collaboration
🌎 Flexible with different time zones
I stay updated with modern backend development practices and aim to build reliable systems that can grow with your business.
Whether you need a custom REST API, SaaS backend, authentication system, database architecture, or improvements to an existing backend, I can help you build a secure and maintainable solution aligned with your business goals.
Let's connect and discuss your project requirements. I'd be happy to help!
Steps for completing your project
After purchasing the project, send requirements so Md. can start the project.
Delivery time starts when Md. receives requirements from you.
Md. works on your project following the steps below.
Revisions may occur after the delivery date.
Requirements Review
I'll review your answers and confirm the scope, tech stack, and timeline before starting development.
Database & Architecture Design
Design the PostgreSQL schema and set up Clean Architecture structure for scalable, maintainable code.