Data Engineer - Python, AI

Role Summary We are looking for a mid-level Python Developer 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. • 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. Required Skills • 10–12 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. • 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. ------------------------------------------------------ Job Family Group: Technology ------------------------------------------------------ Job Family: Applications Development ------------------------------------------------------ Time Type: Full time ------------------------------------------------------ Most Relevant Skills Please see the requirements listed above. ------------------------------------------------------ Other Relevant Skills For complementary skills, please see above and/or contact the recruiter. ------------------------------------------------------ Citi is an equal opportunity employer, and qualified candidates will receive consideration without regard to their race, color, religion, sex, sexual orientation, gender identity, national origin, disability, status as a protected veteran, or any other characteristic protected by law. If you are a person with a disability and need a reasonable accommodation to use our search tools and/or apply for a career opportunity review Accessibility at Citi. View Citi’s EEO Policy Statement and the Know Your Rights poster.