Big Data and SQL Developer, Citi

Citi

Location:
Canada, Mississauga

Category:
IT - Software Development

Contract Type:
Employment contract

Salary:

120800.00 - 170800.00 USD / Year

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Job Description:

The Big Data and SQL Developer is a senior level position responsible for establishing and implementing new or revised application systems and programs in coordination with the Technology team. The overall objective of this role is to lead applications systems analysis and programming activities.

Job Responsibility:

Lead the design and implementation of highly scalable, robust, and performant Big Data solutions
Write high-quality, production-ready code for complex data pipelines
Drive performance tuning, troubleshooting, and optimization of Big Data applications
Provide technical leadership and guidance to multiple engineering teams
Mentor senior and junior engineers
Lead comprehensive code reviews
Act as a key technical liaison between the Big Data engineering team and internal business units
Proactively engage with stakeholders to understand business requirements
Research, evaluate, and integrate new Big Data technologies and tools

Requirements:

6+ years of progressive experience in software engineering
Expert-level proficiency with Apache Spark (Spark SQL, Spark Streaming, PySpark/Scala Spark), Hadoop ecosystem (HDFS, YARN)
Expert in Scala, Python, or Java
Deep understanding and practical experience with data warehouse models
Strong proficiency in SQL
Experience with NoSQL databases (e.g., Cassandra, MongoDB) is a plus
Experience with CI/CD pipelines (e.g., Jenkins, GitLab CI), infrastructure as code (e.g., Terraform), containerization (Docker, Kubernetes/OpenShift)
Solid understanding of data governance, data quality, data lineage, and data security principles
Bachelor's degree/University degree or equivalent experience
Master's degree preferred
Experience in the financial services domain – Liquidity Management, Liquidity Stress Modelling
Should be well versed with Markets terminologies
Experience with large data volumes, real-time processing, and stringent data quality/security requirements

Nice to have:

Experience with NoSQL databases (e.g., Cassandra, MongoDB)
Familiarity with MLOps principles for data science workflows

What we offer:

Career growth opportunities
Global team environment
Community engagement opportunities
Equal opportunity employer
Reasonable accommodations for persons with disabilities

Additional Information:

Job Posted:
September 25, 2025

Employment Type:

Fulltime

Work Type:

Hybrid work

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Big Data and SQL Developer