Senior Database Administrator

L3 – Senior Iceberg DBA / Lakehouse Operations EngineerClient: NTT DATA/Gainwell MOI- Virtual USC, GC EAD, H4 EADPosition Details:10+ years of experience in Big Data / Data Engineering / DBA / Data Operations rolesMinimum 2+ years of hands-on experience with Apache Iceberg in production environments6+ years of experience working with Cloudera ecosystem (CDP Ecosystem)Strong expertise in: Iceberg table optimization (compaction, metadata management, partition evolution), multi-engine performance tuning (Spark, Hive, Impala), troubleshooting complex data and query performance issuesProven experience handling: P1/P2 production incidents, large-scale environments (TB/PB scale), data migration initiatives (Hive/Teradata ? Iceberg)Lead enforcement of data modeling and Lakehouse standards across applicationsGuide teams on: Medallion architecture implementation, balancing normalization vs performanceReview and resolve complex data modeling and performance trade-offsEnsure consistency of data structures across domains and workloadsMentor and guide L2 resources in operational best practices and troubleshootingRequired Skills:Strong hands-on experience with Apache Iceberg and/or Hive-based data lakesUnderstanding of data modeling concepts (normal forms) and modern Lakehouse patterns (Medallion architecture)Expertise in: table-level optimization and performance tuning, large-scale data management (TB/PB scale)Experience with: Spark SQL, Hive, Impala, NiFI, TrinoStrong understanding of: partitioning strategies, file formats (Parquet/ORC), distributed query processingPreferred Skills:Experience with: Hive-to-Iceberg or Teradata-to-Iceberg migration, Cloudera CDP (CDE/CDW)Familiarity with: Cloud platforms (AWS, Azure)Scripting/automation (Python, Shell)