Nodejs server development

Budget: 900 EUR Deadline: 7 days

Hello.

I am NodeJS developer. Ready to take on. Please, text me.

Budget: 900 EUR Deadline: 4 days

Hello!
I am interested in your project. I offer my services for creating modern, scalable, and user-friendly web solutions (online stores, web applications).
I am ready to discuss how to best implement your idea.

Budget: 900 EUR Deadline: 5 days

Hello!
I will gladly take on your project!
Have extensive experience in this.
Write in private messages and check the portfolio

Budget: 900 EUR Deadline: 5 days

Hi!
I am MERN expert.
It is my favorite one.
Let's discuss more.

Budget: 900 EUR Deadline: 1 day

Hello. I have been working with node.js. I'm ready to cooperaate

Budget: 900 EUR Deadline: 10 days

I can configure the server so that everything is securely saved at the moment of receipt. Thus, even if the application crashes or something goes wrong, the data will not be lost. I will handle login, sessions, and file storage in a way that makes everything easy to track. Each session will be linked to the appropriate user, and each data fragment will be packaged and saved exactly as you need. If something goes wrong, the server can quietly flag it. Let me know if you have a format for metadata, and I will take care of everything else.

Budget: 900 EUR Deadline: 12 days

Hello!

For this, I would suggest giving each session its own short-term download key, separate from user authentication, so that the app can send raw measurement data even if the user is temporarily offline. This makes uploads more reliable and keeps binary files closely tied to sessions without the need for constant login checks. I have worked on similar flows in https://storyai.cc/ and https://zolochivlis.kyiv.ua/, where background data synchronization needed to remain smooth and reliable. I can make this clean, quiet, and easy to maintain.

Thank you!

Budget: 900 EUR Deadline: 1 day

Hello. I will do it. Write, I will be glad to cooperate
Hello. I will do it. Write, I will be glad to cooperate

Budget: 900 EUR Deadline: 30 days

Hi there! 👋
I’m Ruslan Zotsenko, a Full-Stack Developer with commercial experience in Node.js. I’ve worked on freelance projects involving backend development, including user authentication, session management, and binary data storage.

Here’s how I can help you with the listed responsibilities:

✅ User Authentication – Implemented secure user registration and login systems using JWT (access + refresh tokens), password hashing with bcrypt, and route protection via middleware.
✅ Session Management – Built systems to store and associate sessions with user IDs, including structured session data (name, ID, userID) in MongoDB. Designed logic for session lifecycle and state updates.
✅ Measurement Data Storage – Experience handling raw binary data uploaded from client applications. Created .bin files with associated metadata (userID, sessionID, timestamps) and stored them either locally or via cloud services like Cloudinary.

I follow clean code practices, MVC architecture, and RESTful API design, and use tools like Postman for testing and Git for version control.

GitHub: github.com/RuslanZotsenko22

I’m ready to jump into the project quickly, as I’ve already worked on similar systems. If needed, I can provide relevant code samples or complete a test task promptly.

Looking forward to your response, and thanks for your time!
— Ruslan Expand

Budget: 900 EUR Deadline: 24 days

Good day⚡Your task fully matches my specialization! 💯 I can complete quickly and, importantly, with quality! 👌
Feel free to contact me and we will discuss this project in more detail! The cost and development time will be agreed upon individually! ✔️
❗️❗️❗️7+ years of experience. ❗️❗️❗️
I am engaged in web development using the following technologies:
✅ Django, Python 3.12,
✅ djangorestframework,
✅ (Django Templates with Jinja) and SEO Friendly 💻
✅ Rest Full API,
✅ pyTelegramBot,
✅ MySQL, PostgeSQL, SQLite
✅ JavaScript, Typescript
✅ React
✅ React-Native,
✅ Redux, ReduxToolkit
✅ Bootstrap, Material UI, Tailwind CSS Expand