During a two-month period, Zakir Jiwani enhanced security and reliability across several open-source repositories. In hardisgroupcom/sfdx-hardis, he implemented secure JWT certificate management for CI/CD pipelines, replacing local file storage with encrypted secret variables and introducing robust cleanup routines using Node.js and TypeScript. For prowler-cloud/prowler, he enabled configurable CORS origins via environment variables, improving deployment flexibility. His work in huggingface/transformers optimized XLNet’s device-aware positional encoding using PyTorch, ensuring computations run on the correct hardware. Additionally, he improved memory management in angr and increased QA visibility in pyg-team/pytorch_geometric, demonstrating depth in Python programming and backend development.