Lead Data Scientist (AI)

Location: Berlin, Germany; hybrid work with up to 3 days per week from home

Company

hirify.global provides Buy Now, Pay Later payment methods and digital checkout solutions for B2B companies, supported by proprietary machine-learning risk models and a scalable technology platform.

What you will do

• Own the credit risk modeling domain and a key business KPI with direct impact on P&L.
• Design, develop, and productionize scalable machine learning solutions for credit and portfolio management.
• Advance credit scoring with applied AI methods, including LLMs, RAG, AI agents, and foundation models.
• Build PD, LGD, and EAD models, identify risk factors, and optimize real-time decision engine logic.
• Design experiments and A/B tests for complex cross-domain problems and translate results into actionable insights.
• Partner with Engineering, Product, and Data Science teams, contribute to system design, and mentor junior Data Scientists.

Requirements

• 6+ years of Data Science experience with significant credit-domain expertise and deep experience in PD modeling, validation, and production monitoring.
• Strong Python and SQL skills, including pandas, scikit-learn, XGBoost, PyTorch or TensorFlow, and data visualization with Tableau.
• Hands-on experience evaluating, integrating, and fine-tuning LLMs and generative AI models in production.
• Experience deploying and productionizing ML services using MLOps practices such as Docker, Kubernetes, event-driven architectures, and model monitoring.
• Strong quantitative analysis, data mining, business acumen, communication, and data storytelling skills.
• Experience with LGD, EAD, limit policies, portfolio management, or graph databases such as Neo4j is highly valued.

Nice to have

• Broader credit risk experience across LGD, EAD, limit policies, and portfolio management.
• Hands-on experience with Neo4j or other graph databases for interconnected data.

Culture & Benefits

• Flexible working hours and a hybrid work model.
• 30 days of vacation, sabbatical opportunities, and additional child sickness leave for parents.
• Virtual Shares Incentive Program and an annual professional development budget.
• Discounted Berlin public transport, Deutschland-Ticket, or JobRad.
• Free German group classes and an English-speaking, multicultural team.
• Company events, interest groups, a run club, and game nights.