Senior ETL Designer & Developer

Role Overview

We are seeking a Senior ETL Designer & Developer to design, build, and support enterprise-scale data integration and analytics solutions across Informatica PowerCenter, Teradata EDW, and Google Cloud Platform (GCP). The role involves developing scalable ETL pipelines, enabling telecom data processing, supporting enterprise reporting (including ad-hoc analytics), and optimizing large-scale EDW environments.

Key Responsibilities

ETL & Data Engineering

· Design, develop, and maintain ETL/ELT workflows using Informatica PowerCenter

· Build scalable batch and near real-time data pipelines

· Develop reusable mappings, workflows, and transformation logic

· Automate ETL processes using Unix shell scripting

Data Warehouse (Teradata)

· Work extensively with Teradata Enterprise Data Warehouse environments

· Strong experience with Teradata CLDM (Common Logical Data Model)

· Design and manage EDW layered architecture (Staging, ODS, EDW, Data Marts)

· Extensive expertise in Teradata performance optimization techniques including:

o Explain plan analysis

o Partitioning strategies

o Join/index optimization (PI, NUSI, etc.)

o Query tuning and workload management

· Strong Teradata SQL coding expertise for complex transformations and large datasets

· Design and optimize dimensional models (star/snowflake schemas)

Cloud Data Engineering

· Develop solutions on Google Cloud Platform (BigQuery, Dataflow, Cloud Storage, Pub/Sub)

· Implement and support hybrid data architectures integrating on-prem EDW with cloud systems

BI, Reporting & Data Virtualization

· Support enterprise BI tools:

o SAP BusinessObjects

o Qlik Sense

o Looker

· Support ad-hoc reporting requirements from business users using EDW and BI layers

· Work with Denodo Platform for federated data access, performance optimization, and logical data modeling

Telecom Domain Experience

· Strong experience in telecom OSS/BSS data environments

· Hands-on knowledge of:

o CDR/IPDR data processing

o Billing, CRM, and subscriber lifecycle data

o Network performance, fault, and mediation systems

· Understanding of telecom KPIs (ARPU, churn, usage patterns, QoS metrics)

· Experience handling high-volume, complex telecom datasets

Scripting & Performance Optimization

· Strong expertise in Unix shell scripting for automation, scheduling, and monitoring

· Advanced Teradata performance tuning and optimization for large-scale workloads

· Optimize ETL jobs, SQL queries, and EDW processes for scalability and efficiency