Senior AWS Data Engineer

Must-Have Qualifications: AWS Expertise: Strong hands-on experience with AWS data services including Glue, Redshift, Athena, S3, Lake Formation, Kinesis, Lambda, Step Functions, EMR , and CloudWatch . ETL/ELT Engineering: Deep proficiency in designing robust ETL/ELT pipelines with AWS Glue (PySpark/Scala), Python, dbt , or other automation frameworks. Data Modeling: Advanced knowledge of dimensional (Star/Snowflake) and normalised data modeling, optimised for Redshift and S3-based lakehouses . Programming Skills: Proficient in Python, SQL, and PySpark , with automation and scripting skills for data workflows. Architecture Leadership: Demonstrated experience leading large-scale AWS data engineering projects across teams and domains. Pre-sales & Consulting: Proven experience working with clients, responding to technical RFPs, and designing cloud-native data solutions. Advanced PySpark Expertise: Deep hands-on experience in writing optimized PySpark code for distributed data processing, including transformation pipelines using DataFrames , RDDs , and Spark SQL , with a strong grasp of lazy evaluation , catalyst optimizer , and Tungsten execution engine . Performance Tuning & Partitioning: Proven ability to debug and optimize Spark jobs through custom partitioning strategies , broadcast joins , caching , and checkpointing , with proficiency in tuning executor memory , shuffle configurations , and leveraging Spark UI for performance diagnostics in large-scale data workloads (>TB scale).