Senior Data Engineer (F/H) - Freelance

Iziday is seeking a Data Engineer Expert (M/F) for a freelance mission within the data department of our client in the financial services sector.

Location

50% Brussels
50% Remote

Period

6 months (renewable)

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Mission Context

The mission involves contributing to the development of a new Data Warehouse for the Benelux region, supporting critical business use cases such as IFRS9 compliance and payment probability calculations. The project is in its early stages, offering significant growth opportunities in the coming years.  

The mission will be carried out within an agile team composed of analysts, developers, and architects spread across Brussels and Paris.  

Key Responsibilities

Analyze data extracts required from operational systems to feed the raw layer of the Data Warehouse.
Define and design data models for the conformed layer, consolidating sources into a unified data model based on business rules.  
Develop data models for datamarts in the exposition layer (e.g., Star Schema) to facilitate business consumption via visualization tools.  
Draft detailed requirements, including data models, mappings, and dictionaries, for developers and validate their work.  
Ensure high-quality data by conducting thorough data quality testing and validation.  
Collaborate closely with team members across different locations to achieve project goals.  

Technical Skills Required

Expertise in building or expanding Data Warehouses, Data Hubs, or Data Vaults (not as an end user).
Proficiency in data analysis, modeling, mapping, and documentation for development teams.
Strong experience in testing and ensuring data quality.  

Soft Skills

Ability to foster strong relationships with team members and stakeholders.  
Team-oriented mindset with a focus on collective success.  
Proactive, autonomous, and pragmatic approach to problem-solving.  
Delivery-focused with attention to planning and budget constraints.  
Clear and concise communication skills in both oral and written forms.  

Experience Needed for This Freelance Role

At least 6 years of relevant experience in Data Warehouse development projects.  
Familiarity with the credit, loans, or banking industry is preferred but not mandatory.  

Additional Information

Languages:
Fluency in English is mandatory; fluency in French or Dutch is a plus.  

Education:
A Master’s degree in a quantitative discipline (e.g., statistics, mathematics, engineering) is preferred; other academic backgrounds with substantial data knowledge are also welcome.
Certifications in Data Modeling techniques are an advantage.  

Location:
Based in Brussels with occasional travel to Paris or Rotterdam (approximately one day every two months).
Teleworking is allowed 50% of the time but must be conducted within Belgium. Remote work from abroad is not permitted.  


This freelance mission offers an exciting opportunity to shape a cutting-edge Data Warehouse project while collaborating with a dynamic international team!  

Meet the management team

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Julia Ann

Director

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Rudra Ghosh

Partner

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Gagot Marrio

Business Manager

Join our team


You are passionate about data and want to be part of a dynamic and innovative team ?
Join us and take your career to the next level.