Tableau Consultant – Belgium (Hybrid)

Hive-X; Brussel Hoofdstad; On-site; EUR 40,000 - 60,000; Part time

Job summary

Hive-X is looking for a professional in Belgium, specifically Brussels Hoofdstad, to provide technical support for the design and optimization of Tableau dashboards. The role involves creating interactive visualizations, optimizing user experience, and ensuring data quality.

The ideal candidate will have experience with Tableau Desktop and Prep, as well as strong SQL skills. The position is for a mission set at 20 days of service, starting ASAP and extending through the end of 2026.

Qualifications

• Experience in designing and developing Tableau dashboards.
• Proficiency in data preparation using Tableau Prep and SQL.
• Familiarity with performance optimization of Tableau dashboards.

Responsibilities

• Develop and evolve Tableau dashboards with good data visualization practices.
• Prepare data for Tableau dashboards using Tableau Prep and SQL.
• Connect to data sources and optimize dashboard performance.
• Publish dashboards on Tableau Server or Tableau Cloud.

Skills

Tableau Desktop

Tableau Prep

SQL

Data visualization best practices

Job description

Overview

Presentation of ETNIC (Enterprise for Information and Communication Technologies) is the IT operator of the Wallonia‑Brussels Federation. A public interest organization, ETNIC’s mission is to design, develop, maintain and evolve information systems and technological infrastructures serving the administrations and establishments of the FWB. A central player in the digital transformation of the Belgian French‑speaking public sector, ETNIC is involved in particular in: management of IT infrastructures (on‑premise and hybrid), development and maintenance of business applications, decision‑making and business intelligence platforms, governance, security and data quality, and support for users and business teams.

Mission

The mission concerns technical and operational support around the design, evolution, optimisation and publication of Tableau dashboards, as well as the preparation of the data necessary for their use via Tableau Prep. The mission is set at 20 days of service between the start of the mission (ASAP) and 12/31/2026.

Activities

• Development of Tableau dashboards – Design, development and evolution of dashboards with Tableau Desktop; creation of interactive visualisations; ergonomic and readable formatting of dashboards; compliance with good data‑visualisation practices; optimisation of user experience.
• Data preparation – Tableau Prep / SQL – Analysis and cleaning of source data; preparation of usable datasets in Tableau; use of Tableau Prep Builder for development or adaptation of SQL queries if necessary; checking consistency between source data and data displayed in the dashboards.
• Connection to sources & performance – Connection to available data sources; creation or adaptation of Tableau extracts if necessary; optimisation of queries, filters, extracts and dashboard performance; analysis of loading times and identification of causes of slowness.
• Publication – Publication of dashboards on Tableau Server or Tableau Cloud, depending on the environment used.

Required Skills