Looking for a Senior Backend / Meta API Integration Engineer

Looking for a Senior Backend / Meta API Integration Engineer

We are building an AI-powered SaaS platform for small businesses that connects marketing, sales, leads, tasks, and performance dashboards in one operational system.

We need an experienced engineer to help us build Meta integrations, including:
- Meta OAuth connection flow
- Facebook Pages connection
- Instagram content publishing
- Meta Ads / Marketing API integration
- Ad account connection
- Campaign / Ad Set / Ad creation via API
- Lead Ads Webhooks
- Token management, permissions, logging, retries, and error handling

Stack:
Next.js, TypeScript, Supabase, Postgres, Vercel, Meta Graph API, Meta Marketing API.

Required experience:
- Production experience with Meta Graph API and Marketing API
- OAuth, access tokens, permissions, and App Review
- Webhooks and Lead Ads integrations
- Backend architecture and API integrations
- Postgres / Supabase experience
- Strong error handling, logging, security, and production mindset

Big advantage:
- Experience with Instagram Content Publishing API
- Experience creating Meta campaigns through API
- Experience with ads insights/reporting
- Experience with AI SaaS or LLM-based products

Please send:
1. Relevant Meta API projects you built
2. Which Meta permissions/APIs you worked with
3. Whether you handled App Review
4. Your stack
5. Availability and pricing