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Fiverr Pro
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I will setup oauth 2 and API app verification
David Devv
About this gig
Struggling with Google Cloud Console, Meta for Developers, or TikTok rejections? Secure your API infrastructure and resolve OAuth 2.0 permission errors today. As a backend developer specializing in secure API integrations, I optimize your scopes, fix redirect mismatches, and prepare your app to pass strict platform security reviews.
️ Core Services Offered
- OAuth 2.0 Setup: Secure authentication flows for Google, Apple, Meta, TikTok, and LinkedIn.
- Scope Optimization: Auditing and restricting permissions to prevent automated security flags.
- App Verification Support: Aligning developer dashboards, verifying business domains, and managing compliance.
- Review Documentation: Creating the precise screencasts and justification copy required by platform auditors.
- Backend Troubleshooting: Resolving redirect URI mismatches, token expiration bugs, and CORS issues.
Supported Platforms & APIs
- Google Cloud: Gmail, Drive, Calendar, and YouTube APIs.
- Meta: Facebook Login, Instagram Graph, and WhatsApp Business APIs.
- TikTok: Login Kit and Share Kit integrations.
- Ecosystem Essentials: X (Twitter), LinkedIn, and Apple Sign-In.
Please message me with your details to plan your path to compliance!
Get to know David Devv
David Devv
Java Full Stack Developer, Web Apps and Bug Fixes
- FromUnited States
- Member sinceOct 2026
- Avg. response time1 hour
Languages
English, German, Italian, Spanish, French
Hello there,
I specialize in Java full stack development, building websites and applications, integrating APIs, and fixing code errors through debugging. I've successfully completed 50+ projects and I'm now bringing my experience to fiverr to continue my freelancing journey.
Whether you need a new project built or an existing one fixed, I focus on understanding your needs and delivering a solution that works.
As a welcome offer, my first 10 fiverr clients will receive a discount on their first order. Let's bring your idea to life.
FAQ
What details or access do you need from me to get started?
To begin, I will need access to your developer dashboard (e.g., Google Cloud Console or Meta for Developers) or your backend configuration details. If you prefer not to share credentials, I can provide exact, step-by-step code snippets and setting adjustments for you to apply.
Can you guarantee that Google or Meta will approve my app?
No developer can guarantee an outright corporate pass. However, I guarantee that your backend code, scope configurations, domain settings, and review documentation will strictly align with their official compliance guidelines to give your app the highest possible chance of approval.
Which backend programming languages and frameworks do you support?
I work seamlessly with all major modern backend technologies. This includes Node.js (Express, NestJS), Python (FastAPI, Django), PHP (Laravel), Java and Go (Golang). .
What is an OAuth "scope" and why does it cause app rejections?
A scope is a specific permission your app requests from a user (like reading their Gmail or posting to their Instagram). If your app requests sensitive data that it doesn't strictly need to function, platform algorithms or human reviewers will automatically reject or restrict your developer account
Can you help me fix "Redirect URI Mismatch" or CORS errors?
Yes, absolutely! These are the two most common backend authentication errors. They happen when your backend routes or security headers do not perfectly match the authorized URLs listed inside your Google, Meta, or TikTok developer dashboards.
Do I need to have a Privacy Policy and a Terms of Service page ready?
Yes. Major platforms strictly require a live, public Privacy Policy URL that explicitly states how your backend collects, processes, and deletes user data. If you do not have one yet, I can guide you on the exact technical clauses and data-handling sections to include to pass their verification.
