Senior Data Scientist (Fraud Detection)

Location: Guadalajara, Mexico

Company

hirify.global is a Latin American fintech company building buy now, pay later and online consumer credit products for customers in Mexico.

What you will do

• Build and improve lending and payments products using machine learning and data analytics.
• Own production ML models end to end, including experimentation, feature development, monitoring, anomaly analysis, and continuous improvement.
• Develop reliable, well-documented ML pipelines using open-source technologies and cloud-based tools.
• Partner with Product, Engineering, Risk, and Business teams to deliver product enhancements and define ML-related engineering requirements.
• Use AI-enabled tools and emerging AI capabilities to accelerate analysis, experimentation, and model development.
• Mentor team members, contribute to code reviews and testing practices, and support technical recruiting when needed.

Requirements

• Quantitative background in Engineering, Physics, Mathematics, or equivalent practical experience.
• Advanced machine learning knowledge and hands-on experience applying ML in academic or industry settings.
• Strong Python, ML libraries, SQL, and Unix-like environment experience.
• Experience using AI-powered tools and emerging AI technologies in data science workflows, experimentation, analysis, or product solutions.
• Strong analytical and communication skills, including the ability to explain complex topics to technical and non-technical audiences.
• Fluency in English is required.

Nice to have

• Experience with organized fraud detection using graph analytics, network science, device fingerprinting, or behavioral biometrics.
• Experience with hybrid rule-based and ML systems for real-time decisioning.
• Knowledge of AML and KYC regulatory frameworks and their application to fraud detection.
• Experience with AWS machine learning services and causal inference techniques such as uplift modeling or treatment effect estimation.
• Background in Risk, Economics, Econometrics, Finance, pricing, or financial modeling.

Culture & Benefits

• Collaborative, innovative, diverse, and inclusive workplace.
• Focus on ethical business practices, equity, and belonging.
• Reasonable accommodations are available during the hiring process.