Staff Data Scientist, Algorithm (Payments Fraud & Optimization)

Location: Singapore

Company

Airwallex provides an AI-native financial operating system and infrastructure for global payments and financial products.

What you will do

• Define the technical strategy for multi-objective payments optimization across conversion rates, fraud risk, and transaction costs.
• Own complex, cross-functional initiatives with broad business impact.
• Provide technical leadership on optimization algorithms, contextual bandits, A/B testing, and causal inference.
• Collaborate with engineering to build optimization infrastructure and deploy ML systems to production.
• Influence product strategy and investment decisions through data insights and technical recommendations.
• Mentor junior data scientists and engineers.

Requirements

• Advanced degree in statistics, engineering, computer science, economics, or a related quantitative field.
• 5+ years of industry experience in data science or applied machine learning.
• Proven experience with experimentation and causal inference for product decisions.
• Technical leadership experience defining critical systems and influencing product strategy.
• Proficiency in SQL and Python or R.
• Experience using LLMs, AI, and agents to improve processes and ML models.

Nice to have

• Strong experience deploying ML systems to production.

Culture & Benefits

• Work on payments optimization problems with direct business impact.
• Collaborate with cross-functional teams in a fast-paced, high-growth environment.
• Drive adoption of advanced data science and experimentation techniques.