Data Engineer/Python

Senior Data EngineerLocation: Malvern, PA (Hybrid)Experience Level: Level 4 (8+ years)Role SummaryWe are seeking a highly motivated Senior Data Engineer to join the Cost Basis Accounting and Method team. This role is primarily focused on a critical, multi-year Batch Modernization effort, moving legacy mainframe batch processes to a modernized AWS cloud-based architecture. The ideal candidate will be an independent contributor and a rockstar developer who is passionate about building scalable data pipelines.Key ResponsibilitiesDesign, develop, and maintain high-volume data transformation logic primarily using AWS Glue jobs written in Python.Develop custom code and potentially AWS Lambda functions for handling complex logic within the batch processes.Utilize PySpark and SQL for data querying, filtering, and manipulation against various data stores, including modernized data sources and initial DB2 tables.Collaborate with internal mainframe experts to understand legacy system logic and implement requirements for the modernized batch processes.Engage with the build and deployment pipeline, demonstrating a strong understanding of DevOps concepts and proficiency with Git/GitHub.Handle data ingestion from multiple sources, including various vendors, flat files, CSVs, and APIs.Work closely with a dedicated Tech Lead, but be prepared to operate with a high degree of independence.Required Skills and QualificationsAWS database experience, e.g. Aurora, Redshift.Proven experience as a Data Engineer with a strong focus on data pipelines and ETL/ELT processes.Expertise in Python (estimated 80–90% of development work).Experience with AWS services, particularly Glue and Lambda.Proficiency in PySpark and SQL for data handling and querying.Familiarity with DevOps practices and the Git/GitHub development workflow.Some experience with Java batch processes (estimated 10–20% of development work) is a plus.Experience in dealing with varied data formats and sources (vendors, files, APIs).Prior experience with or understanding of mainframe concepts is a good-to-have but not a requirement.