ETL Developer

We are seeking a highly experienced and strategic ETL Developer with 5\+ years of data engineering experience to join our growing data warehousing team.

Key Responsibilities

1\. ETL Architecture \& Pipeline Development

• Design, build, and maintain complex end-to-end ETL mappings, workflows, and sessions using Informatica PowerCenter.
• Develop, optimize, and schedule Python automation scripts for data ingestion, processing, custom transformations, and system monitoring.
• Architect and scale data integration pipelines within the Hadoop ecosystem (Hive, HDFS, Spark, or MapReduce) to handle massive datasets.

2\. Performance Tuning \& Optimization

• Analyze and tune long-running Informatica workflows, complex SQL overrides, memory allocations, and session bottlenecks.
• Implement performance tuning strategies in relational databases (especially Teradata macro/stored procedures, volatile tables, primary indexes, and join strategies).
• Optimize big data storage formats and execution engine resources within Hadoop to maximize throughput.

Required Skills \& Qualifications

Technical Requirements

• ETL Expertise: 5\+ years of core, hands-on experience with Informatica PowerCenter (including advanced transformations, XML parsing, and SQ overrides).
• Programming: Strong proficiency in Python for data engineering tasks, alongside advanced shell scripting (Unix/Linux) and SQL is a must.
• Big Data Ecosystem: 3\+ years of experience working with Hadoop platforms (HDFS, Hive, Impala, Sqoop).
• Relational Databases: Advanced SQL skills. Teradata expertise (including BTEQ, FastLoad, MultiLoad, TPT, and Volatile Tables) is an added advantage.

Experience \& Education

• Total Experience: Strictly 5\+ years in Data Engineering, Data Warehousing, or ETL Development.
• Domain Knowledge: Prior experience in the Telecom Domain is highly preferred / good to have.
• Education: Bachelor’s or Master’s degree in Computer Science, Information Technology, or a related field.