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Fiverr Pro
English
$
USD
I will build a rest API with javascript, bun, or express and database
Ali Kvs
About this gig
Need a fast, reliable backend for your website, app, or SaaS?
I build clean, scalable REST APIs and backend systems using Node.js, Express.js, Fastify, or Bun tailored to your project requirements.
What I can build:
REST API design & custom endpoints
MongoDB, PostgreSQL, MySQL & SQLite integration
JWT authentication & authorization
Input validation & error handling
Third-party API integrations & webhooks
Swagger/OpenAPI documentation
Testing, debugging & optimization
Deployment guidance (Premium)
Tech stack:
Node.js / Bun
Express.js / Fastify
MongoDB / PostgreSQL / MySQL
JWT / bcrypt
Jest
Swagger / OpenAPI
Node.js is a mature, production-proven choice, while Bun offers a modern runtime focused on performance and developer experience. Ill recommend the right option based on your project.
Youll receive clean, maintainable, well-structured code with clear documentation.
Have an existing API that needs fixing or improving? I can help with that too.
Send me your requirements before ordering, and Ill recommend the best approach.
Get to know Ali Kvs
Ali Kvs
Scientific Editor, Python Developer, Kurdish English Translator
- FromAustria
- Member sinceJul 2023
- Last delivery2 years
Languages
English, Persian, Kurdish, Turkish
I provide AI & software development services alongside professional language and academic support.
Tech: AI automation, REST APIs, chatbots, backend systems, and API integrations using Node.js, Python, n8n, OpenAI, Claude & Gemini.
Academic & Language: Medical editing, literature reviews, academic proofreading, Kurdish-English translation, and subtitle localization.
I focus on accurate work, clean execution, and solutions tailored to your requirements. Send me your project details and let's get started.
My Portfolio
Other Software Development Services I Offer
FAQ
Can you use Bun instead of Node.js?
Yes. I can build your API with Node.js or Bun based on your project's requirements. Bun is a great option when its performance and ecosystem fit the project.
Which databases do you work with?
I work with MongoDB, PostgreSQL, MySQL, and SQLite. I can also recommend the best option based on your application's requirements.
Do you deploy the API?
Yes. Deployment guidance is included with the Premium package, and I can help deploy your API to platforms such as Render, Railway, or a VPS.
Can you add WebSocket support?
Yes. I can add WebSocket-based real-time functionality such as live updates, notifications, and messaging as an optional Gig extra.
Can you integrate third-party APIs?
Yes. I can integrate REST APIs, webhooks, authentication systems, and third-party services into your backend.
