During November 2024, Sergey Sinchenko developed the Array Insertion Utility for the apache/datafusion-comet repository, enabling insertion of elements at specified positions within arrays. This feature supported both positive and negative indices, aligning with legacy Spark behavior to ensure compatibility with Spark-based data pipelines. Sergey implemented robust type checking and comprehensive error handling, focusing on reliable operation within distributed data engineering workflows. The work was carried out using Rust and Scala, leveraging expertise in Apache Spark and DataFusion. By enhancing array manipulation capabilities, Sergey addressed a common data transformation need and reduced reliance on external workarounds, contributing depth to the project.