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

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Citi

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Location:
Canada , Mississauga

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Category:
IT - Software Development

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Contract Type:
Not provided

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Salary:

94300.00 - 141500.00 USD / Year
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Job Description:

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.

Job Responsibility:

  • 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, and LLM-based models
  • Develop scalable ingestion and data transformation pipelines for AI and analytics use cases
  • Build and maintain Flask-based APIs for model inference and service integrations
  • Use regular expressions for text cleaning, parsing, and NLP preprocessing
  • Integrate caching and fast lookups using Redis
  • Manage and deploy ML models using MLflow for tracking and versioning
  • Support CI/CD workflows using GitHub, LightSpeed Enterprise, and deployment pipelines
  • Create and maintain Autosys JILs for job scheduling and automation
  • Use basic Linux commands for troubleshooting, operations, and deployment tasks
  • Monitor application and system health using ITRS Geneos
  • Write unit tests and improve automation test coverage (PyTest/unittest)
  • Work with REST APIs, microservices, and basic shell scripting
  • Work with cloud services (ECS), including boto3

Requirements:

  • 3–5 years of hands-on Python programming experience
  • Strong fundamentals in Python, OOP, and design patterns
  • Experience with NLP libraries such as Flair, BERT, HuggingFace Transformers, or similar
  • Solid experience with PySpark, Pandas, PyArrow, and distributed data pipelines
  • Proficient in working with Parquet using FastParquet or pyarrow.parquet
  • Familiarity with fast JSON parsing libraries (json, ujson, orjson)
  • Experience building APIs using Flask (FastAPI is a plus)
  • Experience with MLflow for model tracking and deployment
  • Good understanding of CI/CD practices and Git workflows
  • Experience working with Redis or similar in-memory stores
  • Experience with Autosys JILs for job scheduling
  • Comfortable with Linux command line and shell scripting
  • Strong debugging, problem-solving, and teamwork skills
  • Exposure to cloud services
  • AWS boto3 experience is an asset

Nice to have:

  • Experience with Polars or Dask for high-performance data processing
  • Experience with PyTorch or TensorFlow for model training
  • Experience with Docker, Kubernetes, or containerized deployments
  • Experience with monitoring tools such as ITRS Geneos
  • Experience with FastAPI, Airflow, or Prefect

Additional Information:

Job Posted:
May 16, 2026

Employment Type:
Fulltime
Work Type:
Hybrid work
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