Task Description I am looking for a Python developer to handle two distinct sub-tasks within an existing project. This is a targeted engagement estimated to take 3 hours. As this work integrates into an active codebase, the developer must ensure that all new implementations align with the current project structure. Deliverables 1. Template Refactor (IAM Integration) * Task: Take an existing Python template (currently configured for anonymous S3 access) and refactor it to support IAM Authentication. * Requirement: The refactored version must utilize Access Key ID and Secret Access Key via boto3 to establish a secure connection. * Goal: A functional, authenticated version of the original template logic that fits into the existing workflow. 2. Polars Data Utility (New Development) Implement a separate, standalone module (distinct from the template but within the project environment) using Polars to handle CSV, Parquet, and JSONL files: * Schema Inference: Programmatically detect and return column names and Polars data types. * Sample Preview: Retrieve a small sample (e.g., top 10 rows) from the S3 object. * Optimization: The logic must be optimized (e.g., using scan_csv, scan_parquet, or scan_ndjson) to ensure the schema is inferred and the preview is generated efficiently without downloading the entire dataset. Testing & Support * Environment Setup: The freelancer is responsible for properly setting up their development environment to interface with the project’s existing infrastructure. * UI Testing: The freelancer will be required to test the implementation through the UI to ensure full compatibility with the existing project's front-end requirements. * Project Owner Support: S3 access and credentials will be provided. The Project Owner will be available to provide environment support, clarify the existing codebase, and help troubleshoot or verify the output in real-time. Technical Stack * Language: Python 3.12 Budget: $25 Estimation: 3hours