Python Developer - Onsite

We are seeking an experienced Python Developer with 8+ years of experience to join Citi’s technology team in Mississauga, ON, Canada. The role focuses on advanced Python development, large-scale data processing, data engineering, ETL development, PySpark, Spark, Pandas, NumPy, SQL/Oracle, and optimization techniques for processing high volumes of data.

Role Snapshot

• Job Title: Python Developer
• Client: Citi
• Office Location: Mississauga, ON, Canada
• Position Type: Full-time
• Work Arrangement: Onsite
• Experience: 8+ years
• Application Deadline: 06 Oct 2026

Key Responsibilities

• Develop and maintain applications using Python.
• Perform large-scale data processing using PySpark and Spark.
• Design and develop data engineering solutions.
• Develop ETL processes using Oracle, MongoDB, and Hive.
• Optimize data processing solutions for large volumes of data.
• Work with Pandas for advanced data processing and analysis.
• Utilize NumPy for data processing and computational requirements.
• Develop and optimize SQL/Oracle queries.
• Apply advanced coding practices to build efficient and scalable solutions.
• Support Big Data processing requirements and data engineering initiatives.

Required Qualifications

• 8+ years of professional experience.
• Strong proficiency in Python, including advanced Python development.
• Advanced PySpark experience.
• Advanced Spark experience.
• Strong data processing and data engineering experience.
• Experience developing ETL solutions using Oracle, MongoDB, and Hive.
• Advanced experience with optimization techniques for large-volume data processing.
• Advanced Pandas experience.
• Intermediate NumPy experience.
• Advanced SQL/Oracle experience.
• Strong coding and Big Data processing experience.