senior Python Developer

Toronto, ON
Hybrid
Posted Oct 13, 2026
1 position

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Employment type: Contract
Experience level: Senior · 5+ years
Posting language: English
Working hours: 40 hours per week
Office presence: 4 days per week
Seniority: Mid-Senior level
Application method: Direct apply is available

Job summary

Develop and optimize high-performance data processing workflows and pipelines using Python, pandas, polars, and ClickHouse. Build containerized and event-driven systems, implement distributed processing with Dask, and maintain code quality through testing and collaborative Git practices.

Job details

Senior Python Developer Location: Toronto Ontario- hybrid 4 days Contract to hire Job Summary Job Description We are seeking a skilled Python Developer to join our data engineering team. You will design, develop, and maintain high-performance data processing pipelines using modern Python frameworks and tools. In this role, you'll work with large-scale datasets, containerized systems, and distributed computing platforms to deliver robust data solutions. Key Responsibilities Develop and optimize data manipulation workflows using pandas and polars to handle large datasets efficiently. Design and implement containerized applications using Docker and Kubernetes to ensure scalable, reliable deployments. Build and maintain data pipelines integrating with ClickHouse columnar databases for analytical workloads. Develop event-driven architectures using NATS messaging systems for asynchronous data processing. Write comprehensive unit tests using pytest to ensure code quality and reliability. Implement distributed computing solutions with Dask for processing data beyond single-machine memory constraints. Manage version control using Git and collaborate on code repositories following best practices. Required Skills and Experience Python & Data Processing: Advanced proficiency in pandas and polars for data manipulation, transformation, and analysis. Experience optimizing code performance for large datasets. Containerization & Orchestration: Hands-on experience with Docker for building container images and composing multi-container applications. Knowledge of Kubernetes for container orchestration and deployment management. Data Infrastructure: Working knowledge of ClickHouse or similar columnar databases for OLAP workloads and analytical queries. Messaging & Streaming: Familiarity with NATS.io for building message-driven systems and asynchronous workflows. Testing & Quality Assurance: Proficiency with pytest for writing unit tests, integration tests, and maintaining code coverage standards. Distributed Computing: Experience with Dask for parallel processing and handling out-of-core computations. Version Control: Strong command of Git workflows, branching strategies, and collaborative development practices. Preferred Qualifications Experience with additional Python libraries for data science and machine learning. Familiarity with CI/CD pipelines and DevOps practices. Background in financial services or capital markets data systems. Thanks & Regards, Navin Singh Recruiter – Talent Acquisition Group Phone: 973-370-7023 Address: 200 Metroplex Drive, Suite 300, Edison, NJ 08817 Mail: Navin.singh@irissoftware.com www.irissoftware.com

What you’ll do

Requirements

Requires advanced Python proficiency, experience with pandas and polars, and hands-on knowledge of Docker, Kubernetes, ClickHouse or similar databases, NATS, pytest, Dask, and Git. Preferred qualifications include additional data science or machine learning libraries, CI/CD and DevOps experience, and a background in financial services or capital markets.