Senior Big Data Modeler - Telecom

About the role

This role owns the enterprise data model for a telco data warehouse, data lake and analytics platforms. It sets modeling standards and leads model design across domains so that reporting, data sharing and AI use cases run on one consistent, governed data foundation.

Key responsibilities

• Own the enterprise conceptual and logical data model across telco business domains
• Lead design of DWH, data mart, data lake and lakehouse models (dimensional, 3NF and Data Vault)
• Align models with telco industry frameworks such as TM Forum SID
• Set and enforce modeling standards, naming conventions and review processes, and review and approve models and source-to-target mappings
• Design models for performance and cost at scale (partitioning, clustering, aggregation strategy)
• Work with architects and data engineers on platform design and migration (on-premise to cloud)
• Define master and reference data structures and conformed dimensions across domains
• Partner with data governance on glossary, lineage, metadata and data quality rules
• Design models for BI, regulatory reporting, data sharing and AI / ML feature needs, and run impact assessments for source system, regulatory and business logic changes
• Present model designs and trade-offs to senior business and technical stakeholders, mentor junior modelers and manage several initiatives tracked in Jira

Required profile

• 8+ years of data modeling experience in enterprise DWH / data lake environments
• 5+ years of telco industry experience (BSS / OSS, CDR / xDR, billing, CRM, network data) - required
• Strong documentation, stakeholder management and mentoring skills

Required skills

• Expert SQL and dimensional, 3NF and Data Vault 2.0 modeling
• Strong knowledge of TM Forum SID or telco industry data models
• Expert use of modeling tools (Erwin, ER/Studio, SAP PowerDesigner, SqlDBM or similar)
• Cloud data platforms, preferably GCP BigQuery (Snowflake, Databricks, Redshift or Teradata)
• Lakehouse design and open table formats (Delta Lake, Apache Iceberg) - a plus
• Data governance and metadata tools (Dataplex, Collibra, Alation or similar)
• ETL / ELT design and tools (dbt, Dataflow, Informatica)
• Experience leading DWH migrations or enterprise data model rollouts
• Knowledge of data privacy and telco regulatory reporting requirements