# Data Warehouse and Reporting Developer

> TELEKOM HELLENIC BUSINESS SOLUTIONS SA · Brussels, Belgium · Contract · Posted 2026-05-08

**Workplace:** on_site

## Description

**COSMOTE GLOBAL SOLUTIONS NV** is seeking a skilled **Data Warehouse and Reporting Developer** to join our dynamic team. In this role, you will be responsible for designing, developing, and maintaining data warehouse solutions and generating insightful reports to support business decision-making.

**Key Responsibilities:**

-   Design, develop, and maintain scalable data warehouse solutions.
-   Develop and optimize ETL processes to ensure efficient data integration and transformation.
-   Create comprehensive reports and dashboards for various business units using BI tools.
-   Collaborate with business analysts and stakeholders to gather and analyze data requirements.
-   Ensure data quality, consistency, and accuracy across all reporting outputs.
-   Monitor performance and troubleshoot issues related to data warehouses and reporting systems.
-   Document data warehouse designs, ETL processes, and reporting procedures.
-   Stay up to date with emerging trends and technologies in data warehousing and business intelligence.

## Requirements

-   Bachelor’s degree in Computer Science, Information Technology, or related field.
-   Minimum 13 years of proven experience as a Data Warehouse Developer, Data Engineer, or similar role.
-   Strong knowledge of data warehouse concepts, architecture, and best practices.
-   Hands-on experience with SQL and database technologies (e.g., PostgreSQL, Microsoft SQL Server).
-   Proficiency in ETL tools and development.
-   Experience with BI and reporting tools (e.g., Power BI, Tableau).
-   Strong analytical and problem-solving skills.
-   Ability to communicate effectively with stakeholders and team members.
-   Attention to detail and commitment to data quality and accuracy.
-   Good command of English, both written and spoken.

## Apply

[Apply at TELEKOM HELLENIC BUSINESS SOLUTIONS SA](https://apply.workable.com/telekom-hbs/j/A7F774F4EB/apply)

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