senior python engineer jobs in Toronto

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10,000 senior python engineer job listings in Canada. Find daily updated positions from leading job boards.


  • Toronto, ON, Toronto Census Division, ON; Ontario, Canada Kumaran Full-time

    Build Python 3.x backend services and automation tooling at Kumaran Systems, working with REST APIs and Linux production environments. This senior engineering role requires seven-plus years of production Python development using Python 3.9 or newer. You will develop services with FastAPI, Flask, or Django REST Framework, while supporting Oracle databases,...


  • Toronto, Ontario, ON, Canada Apexon Full-time $120,000 - $150,000 Contract

    **About Apexon** Apexon is a digital-first technology services firm specializing in accelerating business transformation and delivering human-centric digital experiences. We bring together distinct core competencies in AI, analytics, app development, cloud, commerce, CX, data, DevOps, IoT, mobile, quality engineering and UX, with proprietary accelerators...


  • Toronto, ON, Canada Luxoft Full-time €96,000 - €152,000 Contract

    We are looking for an experienced Python Software Engineer to join Total Fund Management as a contractor. The role requires a high degree of autonomy and strong back-end development skills. This position is geared towards delivering solutions within our technology team. You will be responsible for framing and delivering software solutions, building...


  • Toronto, ON, Toronto Census Division, ON; Ontario, Canada Sonata Software Full-time

    Sonata Software, with over $1.2 Billion Revenue, is a leading AI-first Modernization Engineering company, powered by our unique PlatformationTM framework. Our 6400+ AI Engineers are helping enterprises transform from systems to intelligent business platforms leveraging partner ecosystem to drive speed, efficiency and growth. Our bouquet of Modernization...


  • Toronto, ON, Toronto Census Division, ON; Ontario, Canada Tubi, Inc. Full-time €108,600 - €155,100 Temporary

    As a Senior Data Engineer at Tubi, you'll be instrumental in developing and maintaining robust data processing pipelines that underpin our reporting, analytics, and performance insights. You'll operate as an embedded data engineer within a specific data product vertical, shaping the culture, best practices, and overall approach to data engineering within the...


  • Toronto, ON, Toronto Census Division, ON; Ontario, Canada BMO Financial Full-time €70,000 - €150,000 Temporary

    Technology Data and AI Technology (DAT) Engineering supports BMO's Digital-First, risk, regulatory and compliance requirements by building data and AI products that provide timely actionable insights to drive desired business outcomes and value. DAT Engineering collaborates with multiple groups across the bank deliver hundreds of initiatives every year...


  • Toronto, ON, Canada Linuxassociation Full-time €120,000 - €160,000 Contract

    Python and PySpark expertise anchors this senior Toronto role, combining production software engineering with client-facing data and AI application development. As a Forward Deployed Engineer at Apptoza Inc., you will embed with business users, client SMEs, product owners, and engineering teams. You will understand complex workflows, validate solutions...


  • Toronto, ON, Canada ZoomInfo Technologies LLC Remote Full-time $120,000 - $170,000 Contract

    Build reliable software with Python and AI at ZoomInfo, working remotely on applications, services, and data platforms for business teams.As a Senior Software Engineer, you will own complex technical projects from ambiguous requirements through production. You will use Python, SQL, APIs, data pipelines, and applied machine learning to create maintainable...


  • Toronto, ON, Toronto Census Division, ON; Ontario, Canada Clio Full-time €157,300 - €212,800 Temporary

    Clio is the global leader in legal AI technology, empowering legal professionals and law firms of every size to work smarter, faster, and more securely. We are transforming the legal experience for all by bettering the lives of legal professionals while increasing access to justice. We are currently seeking a Senior Data Engineer to join our rapidly...


  • Toronto, ON, Canada Dominion Dynamics Full-time €120,000 - €180,000 Contract

    Build secure backend systems in Python and Rust for AuraNet from Ottawa or Toronto, supporting real-time data across disconnected environments. As a Senior Software Engineer Backend, you will design distributed systems for Dominion Dynamics’ mesh networking platform. The work spans networking, security, containers, and autonomous platforms. You will own...


  • Toronto, ON, Toronto Census Division, ON; Ontario, Canada Jones Lang LaSalle Incorporated Full-time €138,300 - €172,800 Temporary

    Our people at JLL are shaping the future of real estate for a better world by combining world class services, advisory and technology for our clients. Whether you’ve got deep experience in commercial real estate, skilled trades or technology, or you’re looking to apply your relevant experience to a new industry, join our team as we help shape a brighter...


  • Toronto, Ontario, Canada Cognizant Technology Solutions Corporation Full-time

    Build scalable Python applications and AI-driven solutions remotely from Canada, focusing on Generative AI, LLMs, and enterprise engineering.This experienced Python and AI Engineer role requires 8+ years of software engineering experience. You will develop enterprise applications, backend services, and reusable AI APIs. The work spans LLM orchestration,...


  • Toronto, Ontario, Canada Cognizant Full-time

    Build scalable Python applications and AI-driven solutions remotely from Canada, focusing on Generative AI, LLMs, and enterprise engineering.This experienced Python and AI Engineer role requires 8+ years of software engineering experience. You will develop enterprise applications, backend services, and reusable AI APIs. The work spans LLM orchestration,...


  • Toronto, ON, Toronto Census Division, ON; Ontario, Canada ACV Auctions Full-time

    Lead Python backend development for ACV’s VIN Decoder platform, working with AWS, Postgres, GCP BigQuery, and Redis. Standard Eastern Time hours support collaboration. This Senior Software Developer role sits within Platform Engineering and addresses complex data engineering challenges. You will shape architecture, build services, and support reliable...


  • Toronto, ON, Canada BeachHead Full-time $89,833 - $119,782 Contract

    A top financial firm in Toronto is looking for an experienced Python Developer to develop and maintain backend systems and microservices. The role requires 5-7 years of backend development experience with strong Python skills. Responsibilities include building APIs, collaborating with stakeholders, and participating in code reviews. Competitive pay range of...


  • Toronto, ON, Toronto Census Division, ON; Ontario, Canada Linuxassociation Full-time

    Python and PySpark expertise anchors this senior Toronto role, combining production software engineering with client-facing data and AI application development. As a Forward Deployed Engineer at Apptoza Inc., you will embed with business users, client SMEs, product owners, and engineering teams. You will understand complex workflows, validate solutions using...


  • Toronto, ON, Toronto Census Division, ON; Ontario, Canada HCL Technologies Limited Full-time

    We are seeking a hands-on Senior Data Engineer to lead the development, support, and continuous improvement of our Azure-based data platform. This role combines data engineering, platform operations, and technical leadership, ensuring reliable, scalable, and high-performing data solutions across the enterprise. Design, build, and support scalable data...


  • Toronto, ON, Toronto Census Division, ON; Ontario, Canada Dominion Dynamics Full-time

    Build secure backend systems in Python and Rust for AuraNet from Ottawa or Toronto, supporting real-time data across disconnected environments. As a Senior Software Engineer Backend, you will design distributed systems for Dominion Dynamics’ mesh networking platform. The work spans networking, security, containers, and autonomous platforms. You will own...


  • Toronto, ON, Canada Acquird.io Full-time €150,000 - €200,000 Contract

    Acquird.io in Downtown Toronto offers a senior-to-staff Python backend role with a strong focus on Flask/Django and microservices. You will own features end-to-end, debug customer issues, and integrate across a complex system, while occasionally touching server-side rendered frontend with HTMX and GraphQL APIs. The role emphasizes ownership,...


  • Toronto, ON, Toronto Census Division, ON; Ontario, Canada Acquird.io Full-time

    Acquird.io in Downtown Toronto offers a senior-to-staff Python backend role with a strong focus on Flask/Django and microservices. You will own features end-to-end, debug customer issues, and integrate across a complex system, while occasionally touching server-side rendered frontend with HTMX and GraphQL APIs. The role emphasizes ownership, problem-solving,...