Python Developer - NLP, ML, Gen AI - Assistant Vice President

Citigroup • Mississauga, ON, Canada • Posted June 03, 2026

Location Mississauga, ON
Job Type Full-time
Category other-general
Posted June 03, 2026
**Role Summary**

We are looking for a mid-level Python Developer - NLP, ML, Gen AI with combined experience in **Data Engineering** **and** **AI/NLP engineering** . The candidate will build NLP pipelines using libraries such as **Flair** , **BERT** , and LLM frameworks, and will also work on large-scale data processing using **PySpark** , **Pandas** , and related data tools. The role includes developing APIs, integrating with platform services, and supporting CI/CD deployments using GitHub and LightSpeed Enterprise.

**Key Responsibilities**

+ Develop and optimize ETL/data processing jobs using **PySpark** , **Pandas** , **PyArrow** , and related libraries.
+ Work with Parquet files using **FastParquet** or **pyarrow.parquet** for efficient data processing.
+ Implement data parsing and serialization using **json** , **ujson** , or **orjson** for high-performance JSON handling.
+ Build and maintain NLP pipelines using **Flair, BERT...

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