Moniepoint

Data Scientist (Fraud)

South Africa full-time Mid Salary not listed
full-time Mid level Technology & IT Curated
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About the role

Who we are
Ranked in 2024 by the Financial Times, Moniepoint is Africa’s fastest-growing fintech, trusted by over 10 million business and individual accounts, processing billions of Naira in transactions monthly. Our mission is to enable financial happiness for every African, everywhere.
About this role:
We're looking for a Data Scientist to sit at the heart of how we fight fraud — building the models, experiments, and detection systems that protect millions of customers and merchants across our platform. This is a high-impact role at the intersection of machine learning, product, and engineering, where your work will directly shape how Moniepoint detects and responds to emerging fraud threats.
You are a data-driven, intellectually curious Data Scientist who is energized by hard problems in fraud and financial crime. You'll prototype and ship ML models, design experiments, and uncover new fraud signals across our ecosystem — partnering closely with engineers, product managers, and analysts to turn your work into production-grade systems.
Responsibilities:

Prototype, evaluate, and help produce machine learning models for fraud detection; own their ongoing monitoring and retraining cycles.

Design and run experiments to measure the impact of fraud interventions, balancing customer experience against loss reduction.

Size fraud typologies across our product lines to inform prioritization and investment decisions.

Build and maintain anomaly detection systems to surface novel fraud vectors before they scale.

Work closely with fraud operations, engineers, product managers, and data analysts to translate model outputs into real-world mitigations.

Experience & Background:

A strong foundation in statistics with a degree in a quantitative field (Statistics, Mathematics, Engineering, Computer Science, or similar).

3+ years of experience in data science, decision science, or risk analytics within fraud, payments, or financial crime.

Hands-on experience building and deploying machine learning models in a production environment.

Fraud, risk, or financial services experience is a strong plus.

Solid grounding in data science fundamentals: experimentation, statistical inference, model evaluation, and feature engineering.

Comfort working in fast-paced, cross-functional teams with high ownership expectations.

Skills & Competencies:

Proficiency in Python and SQL; comfort working across the full model development lifecycle.

An investigative instinct — you enjoy digging into data to find patterns others miss.

The ability to communicate technical findings clearly to non-technical stakeholders and translate insights into action.

What Success Looks Like in This Role:

Production-grade ML models and anomaly detection systems that effectively surface and mitigate novel fraud vectors before they scale.

Well-designed experiments that successfully balance customer experience against fraud loss reduction.

Clear sizing of fraud typologies that effectively drives product prioritization and strategic investment decisions.

Seamless cross-functional alignment where technical model outputs are consistently translated into real-world fraud mitigations.

Why Join Us?

Culture: We put our people first and prioritize the well-being of every team member. We've built a company where all opinions carry weight and where all voices are heard. We value and respect each other and always look out for one another. Above all, we are human.

Learning: We have a learning and development-focused environment with an emphasis on knowledge sharing, training, and regular internal technical talks.

Compensation: You'll receive an attractive salary, pension, health insurance, annual bonus, plus other benefits.

Moniepoint is an equal opportunity employer. We celebrate diversity and are committed to creating an inclusive environment for all employees and candidates.
Originally posted on Himalayas

Interview prep

Walk in with sharper answers.

Use this as a quick practice sheet before you speak with the employer.

Mid
Technology & IT Data Analysis Figma MySQL Operations Python Mid level

Likely questions

  1. Tell us about work you have done that is close to the Data Scientist (Fraud) role.
  2. How would you approach your first 30 days at Moniepoint?
  3. Which of Data Analysis, Figma and MySQL have you used recently, and what did it help you achieve?
  4. Describe a time you solved a problem without waiting to be told exactly what to do.
  5. How do you handle busy days, changing priorities, or pressure at work?

Prepare before the call

  • A recent example that proves your experience with Data Analysis, Figma and MySQL.
  • One short story with a problem, your action, and the result.
  • Two examples that show the strengths listed on your CV.
  • A clear reason why this role and company interest you.
  • Your availability, preferred work style, and salary expectations.

Ask them

  • What would success look like in the first 90 days?
  • What are the main problems this hire should help solve?
  • How does the team give feedback and measure good work?
  • What does a normal working week look like for this role?
Practice line

I am interested in the Data Scientist (Fraud) role because I can bring practical experience in Data Analysis, Figma and MySQL, learn the team quickly, and contribute to the outcomes Moniepoint needs from this hire.

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