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dbt Data Engineer / Developer (Snowflake)

Cognizant

Location

Warsaw, Mazowieckie, Poland

Salary

Not specified

Type

fulltime

Posted

Today

via linkedin

Job Description

Role Overview

We are looking for a hands-on dbt Data Engineer / Developer to build, test, and maintain scalable ELT transformation pipelines using dbt, SQL, Snowflake, and modern cloud data platforms.

  • Design, develop, and maintain dbt models for staging, intermediate, and mart layers.
  • Build ELT pipelines using SQL, dbt, and Snowflake, including staging, transformation, and data mart layers; exposure to Databricks, BigQuery, Redshift, or Azure Synapse is an added advantage.
  • Implement dbt tests, documentation, source freshness checks, snapshots, and reusable macros.
  • Optimize SQL queries and dbt models for performance, reliability, and maintainability.
  • Work with analysts, business users, and senior data engineers to translate requirements into data models and transformation logic.
  • Support Git-based development, pull requests, code reviews, CI/CD deployments, and environment management.
  • Exposure to legacy data warehouse migration or modernization initiatives, preferably involving Teradata to Snowflake migration, including support for SQL conversion, data validation, reconciliation, and defect fixes.
  • Troubleshoot pipeline failures, data quality issues, and production defects in collaboration with platform and support teams.

Required Skills And Experience

  • Strong experience in data engineering, ETL/ELT development, analytics engineering, or data warehousing.
  • Strong hands-on experience with dbt Core or dbt Cloud.
  • Advanced SQL skills with experience in complex transformations and performance tuning.
  • Good understanding of dimensional modelling, star schema, data marts, and warehouse concepts.
  • Hands-on experience with Snowflake, including SQL development, warehouse usage, schemas, tables, views, access roles, and performance-aware query design.
  • Good understanding of Snowflake objects such as databases, schemas, virtual warehouses, stages, file formats, streams, tasks, and secure views.
  • Good understanding or hands-on exposure to Teradata concepts, SQL, data warehouse objects, BTEQ scripts, stored procedures, views, and migration activities from Teradata to Snowflake.
  • Experience supporting migration testing, source-to-target validation, record count checks, data quality checks, and comparison of migrated data between Teradata and Snowflake.
  • Good-to-have exposure to mainframe data sources, including COBOL copybooks, VSAM files, DB2 on z/OS, JCL, batch files, flat files, and mainframe-to-cloud data extraction patterns.
  • Experience with Git, branching strategies, pull requests, and code review processes.
  • Strong analytical, problem-solving, communication, and team collaboration skills.

_MS1

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