Senior Python Developer Commodities and Energy Toronto, ON C110:145k per annum Cititec Talent is working with a global trading and investment firm that is looking for a Senior Python Developer to join its core technology team. This is a hands:on, full:stack engineering role that blends application development , data engineering , and tooling to directly support trading and commercial teams. Youll be involved in both front and Middle Office initiatives , with a focus on performance, scalability, and clean architecture. The role includes building tools for Real Time decision:making and data processing, making it well:suited to developers with experience in risk , pricing , or market:facing systems. While Python is the main language, candidates with strong object:oriented backgrounds (eg, Java or C) who have transitioned to Python are encouraged . Responsibilities: Design, build, and maintain performant and scalable Python applications used by trading and commercial users Develop robust data pipelines and workflows using modern Python tools and frameworks Work closely with Front Office and Middle Office stakeholders to deliver business:critical tools and systems Contribute across the entire SDLC : from requirement gathering and design to deployment and support Implement engineering best practices: automated testing, version control, code review, and CI/CD pipelines Collaborate with cross:functional teams in a fast:paced, delivery:focused environment Key Skills and Experience: Strong Python development skills, including use of Pandas, NumPy, and similar libraries Proven experience building data engineering pipelines and working with relational databases (PostgreSQL, SQLAlchemy) Exposure to Front Office trading systems , risk tools , or other market:facing applications is a strong plus Solid understanding of object:oriented design principles Comfortable with modern Python web frameworks (eg, FastAPI) Familiarity with async programming (asyncio, Multithreading) Exposure to tools like Airflow for orchestration and Kafka for messaging/event:driven architecture Experience working in cloud:based environments , preferably AWS Docker/Kubernetes experience is a plus Excellent communication skills and ability to work closely with business teams