Quant jobs / Millennium

AI Data Scientist

A data science role inside an investment team, building AI-enabled research tools for portfolio managers. Work spans classical ML, LLM retrieval systems and productionising them.

What you’d work on

Our reading of the posting: what a new hire in this role would most likely spend their first months on.

Frame investment research questions as measurable ML or LLM problems
Build retrieval and search tools over company and market documents with source tracking
Create evaluation frameworks for accuracy, robustness and cost
Productionise models as APIs and batch jobs with monitoring
Iterate with PMs on how the tools fit their workflow

What they ask for

Required

PhD in a quantitative field
2+ years professional data science or applied AI
Python with pandas, NumPy, scikit-learn, PyTorch
ML and statistics fundamentals
End-to-end delivery of a model product
LLMs, RAG, embeddings, vector search
SQL
English and Mandarin

Preferred

Financial, regulatory or alternative datasets
Cloud deployment of data products
Knowledge graphs, document processing, time-series modelling
Publications or open-source work

Education: PhD in computer science, ML, statistics, maths, physics, engineering or similar
Experience: At least 2 years in a professional data science or ML role; doctoral research alone does not count
Languages and tools: Python
SQL
PyTorch

How to prepare

Build a retrieval system over company filings with citations and a proper evaluation set
Practise error analysis and baselines before adding model complexity
Deploy it behind an API with monitoring
Learn how analysts use filings and alternative data

What to study

The NLP and ML Quant Researcher roadmap sets out the stages for this kind of role, with free resources for each.

Open the roadmap

Apply

Read the full posting on Millennium’s site before applying: requirements, location and pay can change after we check them.

View the posting on Millennium’s site ↗

SelfMadeQuant wrote this summary from the employer’s public posting, last checked 6 November 2026. SelfMadeQuant isn’t affiliated with Millennium and doesn’t handle applications.