Rivant

Expert Fraud Data Scientist

Sector: Banking

Location: Brussels

Contract length: 16 months

Estimated daily rate (EUR): 760 - 930

Languages: Dutch or French / English

Estimated daily rates are Rivant market estimates for guidance — not a client rate card.

Role details

Start date: 2026-08-17

Duration: 16 months

Extension possible: Not specified

Estimated daily rate (EUR): 760 - 930

Education: Master's degree in a quantitative field (statistics, computer science, engineering); PhD is a plus

Location detail: Brussels (5 min walk from Central Station). Remote/telework from Belgium only

About the role

To strengthen fraud detection in Brussels, a major Belgian bank is hiring an Expert Fraud Data Scientist. You design, develop and improve fraud detection models and turn large volumes of transactional and customer data into actionable intelligence.

Responsibilities

  • Collect, enrich and validate large-scale transactional and behavioural datasets for fraud analytics
  • Design, develop and improve fraud detection models using supervised and unsupervised techniques, graph analytics and anomaly detection
  • Investigate complex fraud schemes, uncover new attack vectors and propose mitigation strategies
  • Work with operations, risk, compliance and product teams to operationalise models in production

Business experience

SkillLevelPriority
Data science or advanced analytics with a focus on fraud detectionExpert (~7 years)Mandatory

Functional experience

SkillLevelPriority
End-to-end data workflow for fraud use cases (collection, curation, modelling)Not specifiedMandatory

Technical experience

SkillLevelPriority
Python (Pandas), SQL, and distributed processing (Spark/Hadoop)Not specifiedMandatory
Feature engineering and data enrichment on large-scale datasetsNot specifiedMandatory
Supervised/unsupervised learning, anomaly detection and graph/network analysisNot specifiedMandatory
Deploying or contributing to productionised analytical solutionsNot specifiedMandatory
Java or other backend languagesNot specifiedPreferable
Generative modelling or graph databasesNot specifiedPreferable

Language requirements

Dutch or French / English

LanguageSpeakingReadingWritingMandatory
EnglishFluentFluentFluentYes
DutchGoodGoodGoodNo
FrenchGoodGoodGoodNo

Soft skills

  • Business oriented and pragmatic
  • Proactive self-starter
  • Strong analytical thinking and synthesis
  • Autonomous, committed and persistent
  • Team player with good communication and influencing skills

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