BI Engineer - Medior

Freelancer Opportunity

Job title: BI Engineer

Job location: Brussels, Belgium

Job duration: 2025-11-03 to 2026-12-31

Job weekly hours: 40 hrs./week

Languages: Good knowledge of Dutch and/or French and English

Role description:

As part of a BI team, you support BI Analysts and work closely with the TEC Data teams to provide data that is accurate, congruent and reliable, to turn data into information and knowledge.

Required Responsibilities:

You work with Wholesale business stakeholders to understand their needs and translate these requirements into robust and scalable data solutions, analysis and reporting

You complete and structure the data in order to build a Power BI data model to provide the business with the relevant dashboards and insights they require

You critically examine the different source data available within the Datawarehouse. You create data quality tickets where needed. You actively maintain the quality of metadata repository/data dictionary

You identify new data sources and make sure they become available in the Datawarehouse/Data Lake. You define the detailed requirements and manage the requests towards the TEC data teams

You track and report out on issues and requests status

You structure the data into DataMart’s using best practices in order to optimize their user friendliness and reusability. You consolidate and clean existing DataMart’s according to guidelines from TEC data teams

You maintain the necessary contacts with the data architects and the Datawarehouse team so that you understand the underlying data flows for your datamarts and the latest evolutions in the BI domain

You troubleshoot reported data loads or reconciliation inconsistencies

You ensure adherence to Proximus processes, policies and standards and document your work

You work on highly complex and cross-functional use cases, using data in different formats and from various platforms

You implement tools and frameworks for automating report generation and identification of data-quality issues

You create scalable, efficient, automated processes for large scale data analyses, model development, model validation, and model implementation

Degree & Experience:

University degree in Computer Science, Mathematics, Engineering, Economics... or equivalent work experience with specialized training/certification

5+ years of experience supporting or working with Business Intelligence/Data Warehousing environments

Knowledge of the ICT industry

Technical skills:

Strong knowledge of SQL (Teradata /Oracle) - to be used in a business intelligence context

Strong knowledge of Power BI Modelling & Report Building and DAX

Strong knowledge of database management and data warehousing

Knowledge of Big Data tools (Python, Spark)

Knowledge of Linux / Windows server (connection, folder creation, software installation, creation of ODBC connections, work in client-server environment, IT infrastructure (support groups, admin rights)

Great sense of precision

Attitudes/Behavior:

You are dynamic, flexible and proactive

Team player and good communicator

Positive & constructive mindset

Able to work independently and manage own time effectively

Ready to make a difference?

Apply now and start your journey with Team Possible! We want to get to know you.

After your application, we will verify your profile and get back to you within 3

working days.

If you’re successful, you can expect the following steps:

● an initial conversation with our recruiter - Swati Kumari

● Interview with the Hiring Manager

● Final decision

About Proximus

We are Team Possible turning tech into opportunities.

We are driven by four core pillars: "I care," "I make a difference," "I radically simplify," and "I embrace the future". This means you'll join a team that genuinely cares for customers and colleagues, is empowered to make a real impact, strives to radically simplify complex challenges and is always looking ahead to embrace the future of technology. We believe in an inclusive and safe environment where everyone can thrive, offering extensive career development resources, including access to over 5,000 training modules and a minimum of 5 days of training per year, to help you continuously learn, grow, and tackle bold challenges with us.