Senior Data Warehouse Developer

Senior Data Warehouse Developer - 3 months - Antwerpen Belgium

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Intro

Step into a mission-critical freelance opportunity with RELYzIT Talent, where your expertise will directly shape the future of data-driven decision-making for our client, a renowned institution at the forefront of global health. As a Senior Data Warehouse Developer, you’ll architect and expand the backbone of financial insights, empowering impactful research and operations. This is your chance to build where it matters most.

Why This Role Matters (Mission & Outcomes)

Our client’s Information Technology department is the engine behind essential applications and integrations that drive institutional excellence. As they expand their financial Data Warehouse, your work will enable smarter, faster, and more reliable financial reporting and analytics. The stakes are high: your solutions will empower leaders to make data-driven decisions that support world-class research, education, and healthcare. This is not just about code — it’s about building the infrastructure that supports a global mission.

What You’ll Be Doing

• Designing and implementing the integration of a new financial data source into the existing Data Warehouse architecture.


• Analyzing the impact of new data sources on current dimensions and facts, ensuring seamless integration and data integrity.


• Developing and optimizing ETL processes using SQL Server Integration Services (SSIS) within Visual Studio Integration Services Projects Extension.


• Enhancing and maintaining multidimensional models with SQL Server Analysis Services (SSAS) to support advanced analytics.


• Translating complex business requirements into actionable, data-driven insights and robust reporting solutions.


• Building and refining Power BI dashboards and reports to deliver clear, actionable financial intelligence to stakeholders.


• Collaborating with cross-functional teams to ensure alignment between business needs and technical solutions.


• Documenting processes, data flows, and architectural changes to ensure knowledge transfer and operational continuity.

What We’re Looking For

• Proven ownership mindset: you take initiative, drive outcomes, and thrive in environments where your impact is visible.


• Advanced expertise in Data Warehousing and data modeling, with a strong track record of delivering scalable solutions.


• Deep experience in ETL development, particularly with SSIS and Visual Studio Integration Services Projects Extension.


• Advanced proficiency in SQL Server Analysis Services (SSAS) for multidimensional modeling and analytics.


• Intermediate to advanced skills in Power BI for building compelling reports and dashboards.


• Affinity with financial data and the ability to translate business requirements into technical solutions and insights.


• Strong analytical and problem-solving skills, with a focus on delivering business value.


• Excellent communication skills and the ability to collaborate effectively with both technical and non-technical stakeholders.


• Experience working in dynamic, mission-driven environments is a plus.

Technical Skills

• Data Warehousing & Data Modeling (Advanced)


• ETL Development (Advanced)


• SQL Server Integration Services (SSIS) (Advanced)


• SQL Server Analysis Services (SSAS) (Advanced)


• Power BI (Intermediate to Advanced)


• Financial Data Handling (Nice to have)

Language Proficiency

• Professional proficiency in English is required.


• Knowledge of Dutch or French is a plus, but not mandatory.

Other Requirements

• This is a freelance position with a project duration of 3 months, based in Antwerp, Belgium (partial remote possible).


• Availability for interviews on 19/10/26 (afternoon) or 20/10/26 (morning) is preferred.


• Ability to work partially on-site as required by the project.