Composer DAG for Data Ingestion Pipeline

I need a Composer DAG to ingest data from CSV, XLS, and TXT files, there are like 25 processes for which we receive data . There are some pre ingestion steps involved , like running python scripts, the... (Budget: ₹1500 - ₹7000 INR, Jobs: Big Data, Cloud Computing, Data Analysis, Data Architecture, Data Governance, Data Integration, Data Management, Data Processing, Data Warehousing, ETL)