Engineering:
- Infrastructure (500M MAU)
- Web Dev
- iOS Dev
- Android Dev
- Design
- UX
- Localization
Data: - Ranking timelines - Ad performance - Recommendations - Business analytics - R&D
Product: - Coordinating across the above 2 and adding/measuring (new) features
Sales: - Ads
Finance/HR/Admin/Accounting/Office Manager(s)/Recruiting: - Running a company