Aleksandra Mazur contributed to the pegasystems/pega-helm-charts repository by delivering two core features focused on enhancing Cassandra deployment flexibility and observability. She implemented support for Cassandra datacenter configuration, allowing users to specify localDatacenter and per-datacenter topology within Helm charts, which improved integration with distributed Cassandra clusters. Additionally, she developed DDS metrics logging to file, enabling persistent storage of metrics data for monitoring and debugging through the DDS landing page or prconfigs. Her work leveraged Go, YAML, and Kubernetes, demonstrating a solid grasp of configuration management and DevOps practices. The features addressed operational resilience and deploy-time configurability requirements.