Arjun Mehta
Senior Data Scientist
Profile
Data scientist with 6 years of experience building machine-learning models that run in production. Specialised in recommendation systems, NLP and large language models, with a track record of measurable business impact.
Experience
Senior Data Scientist
Mar 2022 – Present
MapleStream Media · Toronto
- Built a recommendation model that increased watch time by 14%
- Deployed an LLM-based support assistant answering 40% of tickets
- Lead a team of 3 data scientists and 2 ML engineers
Data Scientist
Jun 2019 – Feb 2022
NorthBank Financial · Toronto
- Developed a fraud-detection model saving CAD 3M per year
- Set up MLflow model tracking and monitoring
Education
M.Sc. Machine Learning
2017 – 2019
Lakeshore University · Toronto
Thesis: Transformer models for financial text
Publications
Efficient Fine-Tuning for Domain-Specific Text Classification
2023
Applied ML Workshop