Senior Python Engineer for Web App Backend

I am in need of a highly skilled Senior Python Engineer to assist with the backend of a web application. The ideal candidate should have substantial experience with Python, MongoDB, PostgreSQL, and Flask, as well as a deep understanding of object-oriented programming and scalable architecture.

Key Responsibilities:
- Designing and implementing backend components.
- Handling data processing and storage.
- Developing robust APIs.

Critical Skills:
- Proficiency in Python and Flask.
- Extensive knowledge of MongoDB and PostgreSQL.
- Experience with object-oriented programming.
- Understanding of scalable architecture.
- Proficient in data extraction, transformation, and loading (ETL) using Pandas.

This role will focus heavily on data processing and storage, as well as API development, so experience and skills in these areas are vital. The project requires a full backend development, so a full-stack developer would also be considered, but the primary focus is on backend work.