Senior Data Scientist

Datawizards; Zaventem; Hybride; EUR 90 000 - 120 000; Plein temps

Avantages offerts par ce poste

Mobility budget

Company car

30 days PTO

Laptop + smartphone

Insurance (health, hospitalization, or

Stock options

Résumé du poste

Data Wizards is seeking a Senior Data Scientist to strengthen fraud models by feature engineering on large transactional and behavioral data. You will design and refine models using ML, graph analytics, and anomaly detection, turning data into actionable fraud intelligence.

You will collaborate with Fraud Operations, Risk, Compliance and Product teams to identify trends and translate business needs into scalable analytical solutions.

Qualifications

• 5+ years in data science with fraud detection experience
• Master's in quantitative field; PhD a plus
• Fluent in English; French and/or Dutch a plus

Responsabilités

• Strengthen fraud models by feature engineering on large transactional and behavioral data
• Build and refine fraud detection models using ML, graph analytics, anomaly detection and behavioral analytics
• Transform large datasets into actionable fraud intelligence via feature engineering and data enrichment
• Collaborate with Fraud Operations, Risk, Compliance and Product teams to spot emerging fraud trends
• Investigate complex fraud schemes and develop proactive detection strategies
• Role is project-based and responsibilities may vary due to consulting nature

Connaissances

SQL

Python (Pandas)

Spark

Hadoop

ML (supervised/unsupervised)

Graph analytics

Anomaly detection

Formation

Master's degree in quantitative field

PhD preferred

Outils

Spark

Hadoop

Cloud platforms (AWS/GCP)

Description du poste

Let's build the future of AI & Data, together

At Data Wizards, we're focused on 3 things: Data, AI & you.

We're a small team who genuinely love digging into data that makes a real difference for the companies we work with, and who want to discover how AI and data can help companies out there.

Why join us? Apart from tackling exciting challenges with passionate people in an environment that wants to see you thrive, you'll be part of a young company that keeps its feet on the ground, its eyes on the stars, and believes the best growth comes from the unique magic each Wizard brings.

We are continuously on the lookout for bright data engineers, data scientists, machine learning engineers, AI engineers, and data analysts. But this job description is for Senior Data Scientists out there feeling the magic in them and ready to spread it

We are currently looking for a senior data scientist for a fraud detection project where you would do:

• Strengthening our fraud models by improving how we collect, label, structure and engineer features from complex transactional and behavioral data

• Designing, building and continuously refining fraud detection models using machine learning, graph analytics, anomaly detection and behavioral analytics

• Turning large volumes of transactional and customer data into actionable fraud intelligence through feature engineering, data enrichment and pattern discovery

• Partnering with Fraud Operations, Risk, Compliance and Product teams to spot emerging fraud trends and translate business needs into scalable analytical solutions

• Digging into complex fraud schemes, uncovering new attack vectors and building proactive detection strategies that protect the business financially and reputationally

• But being a consulting company, we can't know in advance what your exact responsibilities will be

You’re a step closer to joining our team if you bring:

Background

• At least 5 years of experience in data science, with a solid grounding in fraud detection, ideally within the financial sector

• A Master's degree in a quantitative field such as statistics, computer science or engineering. A PhD is a plus, and candidates with a different academic background but strong analytical skills are equally welcome

Technical Skills

• Hands-on experience processing large-scale, complex transactional and behavioral datasets using SQL, Python (Pandas) and distributed processing frameworks such as Spark or Hadoop

• Proven ability to apply supervised and unsupervised machine learning, anomaly detection, graph analytics and network analysis to detect, investigate and prevent fraud. Experience with generative AI is a plus

• Strong Python skills, with experience deploying AI applications into production; familiarity with Java is a plus

Soft Skills

• Autonomous & Proactive: You take initiative and drive projects forward.

• Curious & Adaptive: You embrace learning and thrive in dynamic environments.

• Solution-Oriented: You balance technical rigor with business impact.

• Clear Communicator: You simplify complex ideas for diverse audiences.

• Collaborative & Supportive: You work well in teams.

• Creative Thinker: You find innovative solutions to challenging problems.
  

• Languages: Fluent in English, French and/or Dutch.

We know that finding the right job isn’t just about the role, it’s about what’s in it for you, too. While we’re a start-up, we’re big on taking care of our people right from day one.

Here’s a sneak peek at what we offer:

A compensation package that keeps you motivated

• Competitive salary

• Mobility budget or company car with an electrical card

• 30 days of paid time off

• A top-tier laptop & smartphone with a subscription

• Representation allowances

• Group, hospitalization & dental insurance

• Meal vouchers & eco-cheques

• Opportunity to earn company stock over time

A place to be your best self, grow, and thrive

• Work with the most innovative technologies in Data & AI

• Work in an agile, collaborative environment

• Hybrid work model: up to 3 days per week

• Monthly team-building events (plus one epic annual celebration)

• Tailored training programs to fuel your career growth

• A cool, ergonomic office with creative meeting spaces, a Nintendo Switch for spontaneous Mario Kart battles, a massage chair for those deep-thinking moments and fresh coffee & drinks to keep you energized

And most importantly, an organic-growing company where you are in control of your own path!

Our Recruitment Process:

Quick intro call with our HR team (5')

Culture check: HR Interview (30')

Technical check: Wizard assessment (25') & Technical Interview with our wizards (1h)

Partner Meet-up (30')

Why this process?

We want you to get a genuine feel for who we are, and we want to make sure we're aligned on what truly matters. Rather than rushing the process, we focus on finding the right fit, so that six months from now, both sides are still convinced they made the right decision.