EDW Designer

Job description / Role

Description

We are seeking an experienced enterprise data warehouse designer/modeler with specialized expertise in Teradata environments. The ideal candidate will design robust data warehouse solutions, possess strong telecommunications domain knowledge, and translate complex business requirements into optimized data models.

Experience required

Minimum 5+ years in enterprise data warehousing and data modeling

Core responsibilities

• Design conceptual, logical, and physical data models for enterprise data warehouses
• Specialize in Teradata modeling including partitioning, indexing (PI, SI, NUSI), join indexes, and statistics optimization
• Transform source data into target EDW models; design fact/dimension tables and implement SCD Types 1, 2, 3

• Conduct data profiling on source systems to identify quality issues, patterns, and anomalies
• Analyze source data structures, relationships, and dependencies; perform data lineage and impact analysis

• Understand and analyze business requirements from business units, analysts, and tribes
• Collaborate with business tribes (product, marketing, finance, operations), development teams, ETL developers, and DBAs
• Conduct discussions with source system owners and subject matter experts

• Perform source-to-target data validation and reconciliation; execute data quality checks
• Create mapping documents, high-level design (HLD), low-level design (LLD), and technical specifications
• Maintain data dictionary, metadata repository, and operational documentation

• Design and optimize database objects; implement Teradata-specific optimizations (PI/SI selection, join indexes, statistics, workload management)
• Write complex SQL for data analysis and validation; support ETL teams with technical guidance

Required skills

• Teradata (required): Advanced knowledge of architecture, SQL, utilities (BTEQ, FastLoad, MultiLoad, TPT), optimization, partitioning, and indexing
• Oracle: Strong experience with PL/SQL and performance tuning
• SQL: Expert-level programming across multiple platforms (Teradata, Oracle, SQL Server)
• Data modeling tools (Erwin, PowerDesigner); ETL tools exposure (Ab Initio, Informatica)
• Data warehouse concepts: Star/snowflake schema, dimensional modeling (Kimball), normalized modeling (Inmon)

• Strong understanding of telecom business processes and data domains
• OSS: Network inventory, provisioning, fault/performance management
• BSS: Billing, customer/order management, revenue assurance, product catalog
• Telecom KPIs: ARPU, churn rate, network utilization, service quality

• Full SDLC experience (Agile/Scrum, Waterfall methodologies)
• Product-oriented mindset with strategic thinking and business value focus
• Strong analytical, problem-solving skills with attention to detail
• Excellent communication skills; ability to explain technical concepts to non-technical stakeholders
• Cross-functional collaboration and stakeholder management

Preferred qualifications

• Bachelor's degree in computer science, information systems, or related field
• Teradata certification (Teradata Certified Professional)
• Cloud data platforms experience (AWS Redshift, Azure Synapse, Snowflake)
• Big data technologies (Hadoop, Spark); MDM and data governance knowledge

Key deliverables

• Comprehensive data models with Teradata-optimized physical designs
• Source-to-target mapping documents, HLD/LLD documents, and technical specifications
• Data profiling reports, quality assessments, and performance tuning recommendations