Protect your users and your data. I implement bulletproof authentication, role-based access control, and security best practices that keep your startup safe from day one.
Email/password, social login (Google, GitHub, Apple), magic links, and passwordless flows.
TOTP authenticator apps, SMS verification, and backup codes for enhanced account security.
Granular permissions — admin, editor, viewer, custom roles — to control who can do what.
CSRF protection, rate limiting, input sanitization, HTTPS enforcement, and secure headers.
Review your current auth system (or plan a new one) and identify vulnerabilities and requirements.
Build the auth system with proper password hashing, session management, and token handling.
Test for common attack vectors — brute force, session hijacking, XSS, CSRF, and injection.
Document the auth flow, security policies, and incident response procedures for your team.
For most startups, I recommend Firebase Auth or NextAuth.js — they handle the hard parts (password hashing, session management, OAuth) securely out of the box. Custom auth makes sense for very specific requirements.
I perform security reviews and fix common vulnerabilities. For formal penetration testing, I can recommend specialized security firms and work with them to fix any findings.
Yes. I can add Google, GitHub, Apple, Facebook, and other social login providers to most existing auth systems.
Let's talk about your project. I'll give you an honest assessment and a clear plan to move forward.