Lead Data Scientist - AML Handling

About the Position

Lead Data Scientist - AML Handling

We are seeking a Lead Data Scientist (IC3) to join our Anti-Money Laundering (AML) Handling & Prevent team in London. This role offers a unique opportunity to work on the intelligence system at the core of our operational handling and prevention work. You'll help automate components of our operational systems, establish robust LLM evaluation pipelines, and build solutions that reduce financial crime risk. What you build will have a direct impact on Wise’s mission and millions of our customers.

Responsibilities

• End-to-End Automation & EDD LLMs: Lead the development and deployment of AI models designed to augment operational workflows (e.g. Business and Consumer EDD LLMs), specifically targeting the automation of case summaries, red flag generation, risk classifications, and document requests.
• Evaluation Framework & Labeling Taxonomy: Establish labeling taxonomies and guidelines with EDD SMEs, construct evaluation datasets, and implement automated eval harnesses to systematically measure accuracy, precision, recall, and failure modes.
• Prompt Optimization & Experimentation: Audit existing prompts and run structured experiments (few-shot, chain-of-thought, context ordering) within a hypothesis-driven testing framework to reduce hallucinations, formatting errors, and prompt drift.
• Shadow Testing & Monitoring: Design shadow mode deployments and parallel execution testing to safely evaluate prompts at scale, while implementing post-deployment monitoring for data and output drift.
• Full-Stack Deployment: Take ownership of the production pipeline by writing and deploying production-ready Python services. You must be willing to bypass engineering bottlenecks to ship value quickly while maintaining code quality.
• Human-in-the-Loop Architecture: Design systems where AI provides recommendations and drafts, ensuring human operators retain the final decision-making authority for critical financial crime mitigation assessments.
• Strategic Demand Deflection: Go beyond ticket handling by analyzing upstream data to create strategies that deflect financial crime attempts before they reach the operations team, effectively reducing manual workload.
• Technical Leadership & Mentorship: Set technical direction, mentor Senior and Junior Data Scientists, foster a product-focused mindset, and guide the team through complex technical implementations, architectural decisions, and AI governance standards.

Requirements

• Experience implementing, training, testing, and evaluating performance of Machine Learning systems.
• Strong Python knowledge. A big plus for proven familiarity and experience with OOP principles.
• Knowledge and experience developing and evaluating GenAI / LLM solutions, including automated eval harnesses and prompt engineering.
• Experience with statistical analysis, experiment design, and failure mode analysis in LLM systems.
• A strong product mindset with the ability to work independently in a cross-functional and cross-team environment.
• Good communication skills and ability to get the point across to non-technical individuals and SMEs.
• Strong problem-solving skills with the ability to help refine problem statements and figure out how to solve them.

Nice to Have

• Familiarity with automating operational processes via technical solutions, for example Large Language Models.
• Experience implementing fine-tuning, reinforced learning alignment, and evaluation techniques within an LLM training pipeline.
• Familiarity with agentic frameworks such as LangGraph or similar.
• Willingness to get hands dirty reading many, many historical operational cases.
• Working knowledge of Java.

We Offer

• Competitive salary: GBP 90,500 - GBP 127,000 per year.
• Stock options in a profitable company.
• Hybrid working model - whether it’s working from home, working overseas, school plays, or life admin, we get that flexibility is essential.
• Annual personal development budget - whether it’s for books, courses, or conferences.
• Visa and relocation support.

About the Company

Wise is a global technology company, building the best way to move and manage the world’s money. Whether people and businesses are sending money to another country, spending abroad, or making and receiving international payments, Wise is on a mission to make their lives easier and save them money.

As part of our team, you will be helping us create an entirely new network for the world’s money. For everyone, everywhere.

We’re people without borders - without judgement or prejudice, too. We want to work with the best people, no matter their background. So if you’re passionate about learning new things and keen to join our mission, you’ll fit right in.

Also, qualifications aren’t that important to us. If you’ve got great experience, and you’re great at articulating your thinking, we’d like to hear from you.

And because we believe that diverse teams build better products, we’d especially love to hear from you if you’re from an under-represented demographic.

Job Location

Office: London

Work Location Type: Hybrid

For everyone, everywhere. We're people building money without borders - without judgement or prejudice, too. We believe teams are strongest when they are diverse, equitable, and inclusive.

We're proud to have a truly international team, and we celebrate our differences. Inclusive teams help us live our values and make sure every Wiser feels respected, empowered to contribute towards our mission, and able to progress in their careers.

If you want to find out more about what it's like to work at Wise, visit Wise.Jobs.

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