Flutter E-commerce App Bug Fix -- 2

I need an experienced Flutter developer to urgently fix a bug in our e-commerce app, specifically related to login/authentication.

Key Requirements:
- Expertise in Flutter development
- Experience with e-commerce applications
- Strong knowledge of authentication mechanisms in mobile apps
- Ability to troubleshoot and resolve bugs quickly

Ideal Skills and Experience:
- Proven track record in Flutter projects
- Familiarity with Firebase or similar backend services
- Excellent problem-solving skills
- Available for immediate start and can complete within 3 hours

Please provide relevant work samples and estimated time to resolve the issue.