Android App Development for Startup

I'm seeking an experienced full stack developer to create an Android app and help with part of my startup.

Essential requirements:
- Android app development expertise
- Full stack development skills
- Experience in startup environment

Ideal Skills:
- Proficiency in Java/Kotlin
- Backend development knowledge (Node.js, Django, etc.)
- Familiarity with databases (SQL, NoSQL)
- UI/UX design experience
- Strong problem-solving abilities

Please provide a portfolio showcasing relevant work and any experience in developing apps for startups.