Full Backend Application Development

Kelechi Nwaji

Starting at

/hr

About this service

Summary

I specialize in building robust, scalable, and secure backend applications from the ground up. Whether you need a well-structured API, real-time features, database optimization, or seamless authentication, I ensure your backend is efficient, maintainable, and future-proof. With expertise in NestJS, Node.js, PostgreSQL, Redis, and cloud deployment, I deliver high-performance solutions tailored to your business needs. 🚀

Process

Discovery & Requirements Gathering

Discuss your project goals, business needs, and technical requirements.

Identify key features, scalability needs, and security considerations.

2 . Architecture & Technology Selection

Design a scalable and efficient backend architecture.

Choose the right database (SQL or NoSQL) and caching strategies.

Define API endpoints and authentication mechanisms.

3 . Database Design & Setup

Create a well-structured database schema based on project requirements.

Implement indexing, query optimization, and backup strategies.

Set up migrations for future database updates.

4 . API Development & Business Logic Implementation

Develop secure RESTful or GraphQL APIs using NestJS & Node.js.

Implement authentication, authorization, and role-based access control.

Write efficient business logic and integrate background job processing if needed.

5 . Performance Optimization & Security Enhancements

Implement caching strategies using Redis to improve speed.

Secure the API with rate limiting, CORS policies, and encryption.

Optimize database queries for faster response times.

6 . Testing & Debugging

Write unit and integration tests to ensure code reliability.

Perform API testing using Postman or Swagger UI.

Debug and fix any performance bottlenecks.

7 . Deployment & CI/CD Integration

Deploy the backend on AWS, DigitalOcean, or AZURE.

Set up CI/CD pipelines for automated testing and deployment.

Configure monitoring tools for tracking API performance.

8 . Documentation & Handover

Provide API documentation (Swagger/Postman collection).

Deliver deployment guides and codebase walkthroughs.

Offer 1-2 weeks of post-launch support for issue resolution.

FAQs

What technologies do you use for backend development?
I primarily use NestJS, Node.js, PostgreSQL, MongoDB, Redis, and BullMQ to build scalable and high-performance backend applications. However, I can also use other stacks based on your project needs.
Can you integrate third-party APIs into my application?
Yes! I can integrate various third-party APIs, including payment gateways (Stripe, PayPal), authentication providers (OAuth, Firebase), and cloud services (AWS, Google Cloud) to enhance your application's functionality.
How do you ensure the security of the backend?
I follow best security practices, including JWT authentication, OAuth, API rate limiting, data encryption, secure headers, and input validation to protect your application from vulnerabilities.
Do you provide API documentation?
Absolutely! I include well-structured API documentation using Swagger (OpenAPI) or Postman collections, making it easy for frontend developers or third parties to integrate with the backend.
Will you handle database management and optimization?
Yes, I design efficient database schemas, optimize queries, implement indexing, and set up backup strategies to ensure a fast and reliable database system.
Do you provide ongoing support after deployment?
I offer post-launch support for bug fixes and optimizations. If you need long-term maintenance, I can create a custom support plan based on your requirements.
What deployment options do you offer?
I can deploy your backend on platforms like AWS, DigitalOcean, Heroku, Vercel, or a custom server. I also set up CI/CD pipelines to automate testing and deployment.
Can I add new features after the project is completed?
Yes! I build the backend with scalability in mind, making it easy to add new features without major refactoring. You can always request additional functionalities in the future.

What's included

Backend Architecture Design
- A well-structured architecture blueprint for the application. - Selection of monolithic or microservices-based architecture depending on project needs. - API design with RESTful or GraphQL endpoints.
API Development & Documentation
- Fully developed secure and scalable APIs using NestJS & Node.js. - Well-documented API endpoints using Swagger (OpenAPI) or Postman collections. - Request validation and error handling for seamless client integration
Authentication & Authorization System
- User authentication with JWT, OAuth, or session-based auth. - Role-based access control (RBAC) for managing user permissions. - Secure password hashing and authentication best practices.
Database Design & Optimization
- Well-structured database schema (PostgreSQL, MySQL, MongoDB). - Indexing and query optimization for better performance. - Database migrations and data integrity validation.
Deployment & CI/CD Integration
- Fully deployed backend on Vercel, AWS, or DigitalOcean. - CI/CD pipelines using GitHub Actions, Jenkins, or GitLab CI. - Dockerized environment for easy scalability.
Security Best Practices
- API rate limiting and CORS setup. - Data encryption (sensitive data protection). - Logging & monitoring for debugging and tracking API usage.
Post-Launch Support & Documentation
- Deployment guide and backend setup documentation. - 1-2 weeks of post-launch support for issue resolution. - Codebase walkthrough (if required)