I will build secure user authentication and login

U
uniya3
U
uniya3
Konstantin
build secure user authentication and login
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build secure user authentication and login
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build secure user authentication and loginbuild secure user authentication and loginbuild secure user authentication and login

About this gig

Need a Secure and Modern User Authentication System for your Web App?

Building a custom login system from scratch can be a major headache. Security token leaks, complex OAuth flows, and buggy password resets are the last things you want to deal with when launching your SaaS or Web Application.

That's where I come in! I am a Full-Stack Developer specializing in React.js and Node.js. I will integrate a robust, production-ready User Authentication system into your existing application or build one from scratch.

 What you get in this Gig:

  • Secure Email & Password Registration
  • Google OAuth Login (1-click sign up)
  • JWT (JSON Web Token) Security implementation
  • Password Reset Flow (via Nodemailer)
  • Role-Based Access Control (Admin vs Regular User)
  • Secure REST API Endpoints (Node.js/Express)
  • User Dashboard Design (React + Tailwind/CSS)

 Tech Stack:

  • Frontend: React (Vite/Next.js).
  • Backend: Node.js, Express.
  • Database: PostgreSQL / MySQL / SQLite (Prisma ORM).

Why choose me? I dont use generic website builders. I write clean, scalable, and commented code that your future developers will love. My systems are modeled after modern SaaS standards.

Please send me a message before ordering

  • Website type

    • Business

  • Programming language

    • JavaScript
    • React
    • Node.js

  • Website features

    • Form
    • Membership
    • Dashboard
    • User Authentication
    • Admin Panel
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Get to know Konstantin

Konstantin

Full Stack AI SaaS Developer

  • FromKazakhstan
  • Member sinceAug 2025
  • Avg. response time1 hour

  • Languages

    English
Hello! I'm Konstantin, a specialized Full-Stack Developer focused on building modern AI-powered SaaS applications and state-of-the-art embeddable web solutions. My technical stack is built around React.js, Node.js, Express, and Prisma ORM. Beyond standard web development, my core expertise lies in AI integration: I build intelligent, embeddable B2B AI chat widgets for websites, implement RAG (Retrieval-Augmented Generation) knowledge base systems, and create complete SaaS platforms from scratch featuring secure authentication (OAuth, JWT), user dashboards, and Stripe billing.

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