573,755+ Lead Fullstack Engineer Python Fastapi Jobs in Canada — Top Companies Hiring June 2026

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Lead Software Engineer at S&P Dow Jones

S&P Dow Jones Indices is looking for a Lead Software Engineer in Toronto, Canada, to enhance fixed income platforms. This position focuses on designing high-performance applications and leading technical initiatives.In this Associate Director role, you will utilize your 10+ years of experience in software de ...

Principal Software Engineer Platform, Identity and BI

What you’ll be doing: Architect and develop large‑scale, mission‑critical platform services for millions of users across the globe, leveraging AWS native technologies including Lambda, ECS/EKS, Athena, RDS, Redshift, Glue, and S3 using common Java and Python frameworks and libraries. ...

Principal Software Engineer Platform, Identity and BI

What you’ll be doing:Architect and develop large‑scale, mission‑critical platform services for millions of users across the globe, leveraging AWS native technologies including Lambda, ECS/EKS, Athena, RDS, Redshift, Glue, and S3 using common Java and Python frameworks and libraries.Build and ...

Full Stack AI Developer

Overview At CGI, we shape the future of artificial intelligence through practical and responsible solutions. Our AI Practice in Montréal is rapidly growing and brings together passionate experts who design, develop, and deliver data- and AI-driven solutions for clients across various industries s ...

Back End Developer Master Level Internship

Job Title: Back End Developer - Master-Level Internship Level: Master’s Level Internship Department: Software Development Duration: 520 Hours (approximately 3 months) Work location: Remote (with hybrid options in Toronto) Co ...

Senior Data Engineer (AWS/Python) to build lakehouse pipelines and revenue data products

Job Title: Senior Data Engineer (AWS/Python) to build lakehouse pipelines for airline customer and revenue data productsOverview: Our client seeks Senior Data Engineers to design and implement production-grade data pipelines in AWS lakehouse supporting Customer, Revenue, ...

Senior Software Engineer II — Build Private Markets ERP

A leading software company in Toronto is seeking a Senior Software Engineer II to lead complex projects and mentor junior engineers. The role requires expertise in Python, Django, and React, along with a strategic mindset to understand technical trade-offs. You will collaborate cross-functionally to create impac ...

Senior AI Platform Engineer — Cloud Native ML Platform

A leading financial services provider in Toronto is seeking an AI Platform Engineer to design and deliver a scalable, secure AI platform. The successful candidate will build high-performance services and lead AI-driven projects. They must have extensive experience with Akka, a solid understanding of MLOps, and p ...

Staff Network Automation Engineer — Global Platform Lead

A leading athletic apparel company in Metro Vancouver is seeking a Staff Engineer to lead network automation initiatives. This role involves defining architecture, leading engineering solutions, and ensuring optimal network performance. The ideal candidate will have extensive experience in Python and AWS, with s ...

Senior Software Engineer II — Private Markets Platform

A leading technology firm in Toronto is seeking a Senior Software Engineer II to lead complex projects in a collaborative team. The role requires expertise in Python, Django, and React, with a focus on simplifying systems and fostering growth. Competitive cash compensation ranges from $181,050 to $213,000 CAD, a ...

Senior ML Engineer: LLM Retrieval & Agentic Workflows

A leading SaaS company in Toronto is hiring a Senior Machine Learning Engineer to lead the design and development of LLM-powered search and retrieval systems. The role encompasses architecting retrieval pipelines, mentoring team members, and driving experimentation for enhanced retrieval effectiveness. Candidate ...

Senior Software Engineer II — Build Private Markets ERP

A leading software company in Toronto is seeking a Senior Software Engineer II to lead complex projects and mentor junior engineers. The role requires expertise in Python, Django, and React, along with a strategic mindset to understand technical trade-offs. You will collaborate cross-functionally to create impac ...

Senior ML Engineer: LLM Retrieval & Agentic Workflows

A leading SaaS company in Toronto is hiring a Senior Machine Learning Engineer to lead the design and development of LLM-powered search and retrieval systems. The role encompasses architecting retrieval pipelines, mentoring team members, and driving experimentation for enhanced retrieval effectiveness. Candidate ...

Staff Network Automation Engineer — Global Platform Lead

A leading athletic apparel company in Metro Vancouver is seeking a Staff Engineer to lead network automation initiatives. This role involves defining architecture, leading engineering solutions, and ensuring optimal network performance. The ideal candidate will have extensive experience in Python and AWS, with s ...

Senior Software Engineer II — Private Markets Platform

A leading technology firm in Toronto is seeking a Senior Software Engineer II to lead complex projects in a collaborative team. The role requires expertise in Python, Django, and React, with a focus on simplifying systems and fostering growth. Competitive cash compensation ranges from $181,050 to $213,000 CAD, a ...

Senior AI Platform Engineer — Cloud Native ML Platform

A leading financial services provider in Toronto is seeking an AI Platform Engineer to design and deliver a scalable, secure AI platform. The successful candidate will build high-performance services and lead AI-driven projects. They must have extensive experience with Akka, a solid understanding of MLOps, and p ...

Senior Software Engineer II — Build Private Markets ERP

A leading software company in Toronto is seeking a Senior Software Engineer II to lead complex projects and mentor junior engineers. The role requires expertise in Python, Django, and React, along with a strategic mindset to understand technical trade-offs. You will collaborate cross-functionally to create impac ...

Senior Software Engineer II — Private Markets Platform

A leading technology firm in Toronto is seeking a Senior Software Engineer II to lead complex projects in a collaborative team. The role requires expertise in Python, Django, and React, with a focus on simplifying systems and fostering growth. Competitive cash compensation ranges from $181,050 to $213,000 CAD, a ...

Senior ML Engineer: LLM Retrieval & Agentic Workflows

A leading SaaS company in Toronto is hiring a Senior Machine Learning Engineer to lead the design and development of LLM-powered search and retrieval systems. The role encompasses architecting retrieval pipelines, mentoring team members, and driving experimentation for enhanced retrieval effectiveness. Candidate ...

Senior Software Engineer II — Private Markets Platform

A leading technology firm in Toronto is seeking a Senior Software Engineer II to lead complex projects in a collaborative team. The role requires expertise in Python, Django, and React, with a focus on simplifying systems and fostering growth. Competitive cash compensation ranges from $181,050 to $213,000 CAD, a ...

Senior Software Engineer II — Build Private Markets ERP

A leading software company in Toronto is seeking a Senior Software Engineer II to lead complex projects and mentor junior engineers. The role requires expertise in Python, Django, and React, along with a strategic mindset to understand technical trade-offs. You will collaborate cross-functionally to create impac ...

Senior ML Engineer: LLM Retrieval & Agentic Workflows

A leading SaaS company in Toronto is hiring a Senior Machine Learning Engineer to lead the design and development of LLM-powered search and retrieval systems. The role encompasses architecting retrieval pipelines, mentoring team members, and driving experimentation for enhanced retrieval effectiveness. Candidate ...

Senior Data Engineer Data Governance & Platform Lead

A global commerce company in Canada is seeking a Data Engineer to lead efforts in building and optimizing the User Platform and Recommendation Engine. The role involves ensuring data accuracy and performance across various systems including Snowflake, Postgres, and Kafka. Ideal candidates should have 3-8 years o ...

Remote Senior AI Driven Backend Architect

A global experience transformation partner is seeking a Principal Agentic Engineer (Back-end) based in Canada. This senior role involves designing and developing robust backend systems for AI-powered products. You'll lead technical direction, mentor engineers, and collaborate with clients. The ideal candidate ha ...

Site Reliability Engineer

Direct message the job poster from ApTask Looking for an intermediate between 2 to 5 years' experience. The Application Infrastructure (Al) department is seeking a Site Reliability Engineer (SRE) to help drive the reliability engineering, operations and customer support services clients S ...

Site Reliability Engineer

Direct message the job poster from ApTask Looking for an intermediate between 2 to 5 years' experience. The Application Infrastructure (Al) department is seeking a Site Reliability Engineer (SRE) to help drive the reliability engineering, operations and customer support services clients S ...

Site Reliability Engineer

Direct message the job poster from ApTask Looking for an intermediate between 2 to 5 years' experience. The Application Infrastructure (Al) department is seeking a Site Reliability Engineer (SRE) to help drive the reliability engineering, operations and customer support services clients S ...

Software Engineer with System Integration Focus

Join a dynamic team as a Software Engineer specializing in system integration, working hybrid from Leduc, Alberta. Use your coding skills to create innovative software solutions.This permanent full-time role requires expertise in programming languages such as Python and TypeScript. You will be integral in bu ...

Senior GPU Software Architect Hybrid

Lead the architectural vision for innovative GPU software at a leading tech company. This hybrid/remote role requires expertise in C/C++ and Python for next-gen GPU products.We are searching for a Senior Engineer - GPU Software Architect to shape the software architecture of cutting-edge GPU solutions. This ...

Senior Full Stack Engineer for AI SaaS

Elevate your career as a Senior Full Stack Engineer at a leading technology firm focused on AI-driven SaaS development. Contribute to innovative backend architecture and generative AI integrations.This role invites skilled engineers to work on SaaS applications that enhance enterprise solutions. You wi ...

Senior GPU Software Architect Hybrid

Lead the architectural vision for innovative GPU software at a leading tech company. This hybrid/remote role requires expertise in C/C++ and Python for next-gen GPU products.We are searching for a Senior Engineer - GPU Software Architect to shape the software architecture of cutting-edge GPU solutions. ...

Senior Full Stack Engineer AI Driven SaaS, Scalable (Vancouver)

OverviewA leading technology firm is seeking a Senior Full-Stack Engineer to join its growing team. This role focuses on SaaS application development, leading initiatives in backend architecture and AI integrations, particularly with generative AI technologies. Candidates should have proficiency in Pyt ...

Full Stack .NET Developer — Flexible Hours & Remote Work

Une entreprise de logiciels recherche un(e) développeur(euse) Fullstack à Montréal. Le candidat idéal doit posséder au moins 3 ans d'expérience en développement web, maîtriser C# et ASP.NET Core, ainsi que des frameworks modernes tels qu'Angular, React ou Vue.js. Ce rôle nécessite également une bonne connaissanc ...

Full Stack .NET Developer — Flexible Hours & Remote Work

Une entreprise de logiciels recherche un(e) développeur(euse) Fullstack à Montréal. Le candidat idéal doit posséder au moins 3 ans d'expérience en développement web, maîtriser C# et ASP.NET Core, ainsi que des frameworks modernes tels qu'Angular, React ou Vue.js. Ce rôle nécessite également une bonne connaissanc ...

Senior Computer Vision Engineer at Stryker

Elevate your career in medical technology as a Senior Computer Vision Engineer at Stryker Endoscopy. Utilize your expertise in AI-driven systems to influence surgical outcomes and mentor engineers.In this senior position at Stryker, you'll lead the development of innovative machine learning solutions while m ...

Senior AI Software Engineer at Sanofi

Advance your engineering career with Sanofi as a Senior AI Software Engineer in Toronto, ON. Drive our digital transformation efforts by leveraging AI to enhance drug discovery.Join the R&D Data & AI Products and Platforms Team at Sanofi to lead architectural design for enterprise-scale AI initiatives. In th ...

Staff Software Engineer AI Innovations

Transform developer productivity with General Motors as a Staff Software Engineer focusing on AI technologies. Enhance engineering workflows through innovative solutions in a hybrid working environment.This role seeks a Staff Software Engineer to lead AI initiatives within the Virtualization & Embedded Softw ...

Telesat Senior IP Network Engineer

Become the Senior IP Network Engineer at Telesat and lead the design of cutting-edge network architectures. Your skills in IP routing, firewalls, and network optimization will be invaluable.As a Senior IP Network Engineer, you will direct the network architecture for our upcoming LEO satellite network. With ...

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