I will oauth 2 integration and custom oauth setup


About this gig
If your app, SaaS, or platform needs secure user authentication or third-party API access, youre in the right place.
I specialize in OAuth 2.0 integration and API authentication systems that are secure, scalable, and production-ready.
Whether you're building a web app, mobile app, or automation workflow, Ill handle the full OAuth flowfrom setup to token management.
What I Can Do For You:
- OAuth 2.0 Authorization Code Flow setup
- Google, Facebook, GitHub, Stripe OAuth integration
- Custom API OAuth provider integration
- Access token & refresh token handling
- Secure login systems (SSO, social login)
- Backend + frontend OAuth implementation
- Fix OAuth errors, redirect URI mismatch
Why This Gig Converts:
- Built for SaaS founders & serious builders
- Clean, scalable, and secure implementation
- Fast turnaround for urgent projects
- Clear communication and structured delivery
Use Cases:
- SaaS apps needing Google login
- Platforms integrating Stripe or external APIs
- Automation tools requiring OAuth authentication
- Fixing broken OAuth setups
STOP WASTING TIME
OAuth done wrong = broken login, security risks, and failed API calls.
Lets get it done right, fast, and clean.
Message me before orderi
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Get to know AHMAD
Full stack developer
- FromUnited Kingdom
- Member sinceApr 2026
Languages
English, German, Spanish
FAQ
What is OAuth 2.0 integration?
OAuth 2.0 integration allows secure authentication and authorization between apps without exposing user credentials.
Which platforms do you support for OAuth integration?
I support Google OAuth, Facebook OAuth, GitHub OAuth, Stripe OAuth, and custom API OAuth providers.
Can you fix OAuth redirect URI mismatch errors?
Yes, I specialize in fixing redirect URI mismatch, invalid_client errors, and token issues.
Do you handle both frontend and backend OAuth setup?
Yes, I implement full OAuth 2.0 flow including frontend login and backend token handling.
What OAuth flow do you use?
I mainly use Authorization Code Flow (most secure), but can also implement other flows if needed.
Can you integrate social login into my app?
Yes, I can add Google login, Facebook login, and other social authentication systems.
Can you integrate third-party APIs using OAuth 2.0?
Yes, I connect apps to APIs that require OAuth authentication like Stripe, Google APIs, etc.
Do you support urgent OAuth integration projects?
Yes, I handle urgent projects with fast delivery timelines.

