You will get Secure Authentication System for Your Node.js App
Rising Talent
Project details
I build secure authentication systems for Node.js applications — not basic login forms, but production-ready auth with proper security layers.
My own SaaS platform Spring (getspring io) runs on the same auth architecture I deliver to clients: JWT with access and refresh tokens, role-based access control, password hashing, input validation on every route, rate limiting, and security headers. This system handles real users in production every day.
Every tier includes clean, documented code you can maintain and extend. The advanced tier adds third-party OAuth login (Google, GitHub) so your users can sign in with accounts they already have.
Stack: Node.js, TypeScript, Express, PostgreSQL, Prisma.
My own SaaS platform Spring (getspring io) runs on the same auth architecture I deliver to clients: JWT with access and refresh tokens, role-based access control, password hashing, input validation on every route, rate limiting, and security headers. This system handles real users in production every day.
Every tier includes clean, documented code you can maintain and extend. The advanced tier adds third-party OAuth login (Google, GitHub) so your users can sign in with accounts they already have.
Stack: Node.js, TypeScript, Express, PostgreSQL, Prisma.
Programming Languages
JavaScript, TypeScriptCoding Expertise
SecurityWhat's included
| Service Tiers |
Starter
$150
|
Standard
$350
|
Advanced
$500
|
|---|---|---|---|
| Delivery Time | 3 days | 5 days | 7 days |
Number of Revisions | 1 | 2 | 3 |
Number of Pages | 0 | ||
Design Customization | - | - | - |
Content Upload | - | - | - |
Responsive Design | - | - | - |
Source Code |
Optional add-ons
You can add these on the next page.
Fast Delivery
+$50 - $100Frequently asked questions
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UO
Uri O.
Apr 10, 2026
AI Developer for Financial and Customer Management Tools
Fabulous brilliant hard working and diligent fullstack engineer will work with Sos again soon.
About Sos
AI Agent & Backend Engineer | MCP, LLM Pipelines, Node/TypeScript
Lviv, Ukraine - 5:43 am local time
Right now I run production work for a short-term rental company (US): AWS Lambda services, an LLM extraction pipeline on AWS Bedrock that turns messy booking data into structured fields, and an agent runtime with a Slack bot that staff use daily. Node.js, TypeScript, NestJS, Prisma, Postgres/MySQL/Mongo, Docker, GitHub Actions.
I also built and shipped Maestro — my own orchestration app for AI coding agents. Electron desktop client, NestJS + PostgreSQL API on a VPS, migrations, schedules, persistent state. It drives Claude Code and Codex agents against real repositories. I use it every day on client work.
Hire me for:
→ AI agents that do real work — tool use, MCP servers, orchestration, guardrails, not demos
→ LLM pipelines: extraction, classification, structured output, evals
→ Backends and APIs: REST, OAuth 2.0 / JWT / RBAC, third-party integrations, Postgres + Prisma
→ Getting it deployed: AWS, Docker, VPS, CI/CD
Before code I ran a manufacturing business and a food brand into national retail. That's why I ask what the thing is for before I build it, and why I tell you when a feature isn't worth the money.
Steps for completing your project
After purchasing the project, send requirements so Sos can start the project.
Delivery time starts when Sos receives requirements from you.
Sos works on your project following the steps below.
Revisions may occur after the delivery date.
Scope & Planning
Review your codebase, confirm auth requirements, user roles, and login methods. Define the full scope before writing any code
Core Authentication
Implement signup, login, password hashing, JWT access and refresh tokens, and protected route middleware