• Analyze, refactor, and modernize Spark/MapReduce/Hive/Tez jobs for execution within NexusOne’s managed Spark and Trino environments. • Design, build, and optimize batch and streaming pipelines using Spark, NiFi, and Kafka. • Convert existing ETL jobs and DAGs from Cloudera/MAPR ecosystems to open-source equivalents. • Collaborate with Data Engineers and Architects to define new data ingestion and transformation patterns. • Tune performance across large-scale data processing workloads (partitioning, caching, resource allocation). • Implement data quality and validation frameworks to ensure consistency during migration. • Support code reviews, performance tests, and production readiness validation for migrated workloads. • Document conversion approaches, dependencies, and operational runbooks. • Partner with Wells Fargo application SMEs to ensure domain alignment and business continuity.