Scalable Backend Development for Esyglob

I'm looking for a skilled back-end developer to create scalable backend systems for Esyglob. There is high potential for ongoing work and long-term project expansion.

Key Requirements:
- Expertise in MongoDB
- API development and integration
- User authentication and management
- Data processing and storage

Ideal Skills:
- Strong experience in backend development
- Proficiency in handling large datasets
- Ability to build secure and efficient authentication systems
- Experience with API design and microservices architecture

Please provide examples of previous work and relevant experience.