152,375+ Lead Fullstack Engineer Python Fastapi Jobs in Toronto, Canada — Local Employers Hiring June 2026

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Lead Staff Engineer in Offensive Security and Red Teaming

Elevate security standards as a Staff Offensive Security Engineer. Focus on red teaming, real-world testing, and strategic collaboration in a vibrant office setting dedicated to financial innovation.As a central figure, you will lead red team operations and assess vulnerabilities across applications and infr ...

Lead Data and Machine Learning Engineer in Innovative Team

Become a key technical leader as a Data and ML Engineer in a dynamic environment. Drive architectural decisions and foster collaboration while turning complex data into actionable insights.In your role as Senior Data & ML Engineer, you will lead a high-impact team and influence architectural quality. You’ll ...

Lead Physical Design Engineer for Next Gen Technology Development

Become a key player in advancing physical design methodologies for cutting-edge technology. Thrive in a collaborative environment, focusing on low power, high-speed designs, and successful tapeouts.This role involves leading next-generation physical design efforts and developing methodologies in advanced tec ...

Lead Software Engineer Front End (Bangkok based, Relocation provided)

Lead Software Engineer - Front End (Bangkok based, Relocation provided) 2 weeks ago Be among the first 25 applicants At Agoda, we bridge the world through travel. Our story began in 2005, when two lifelong friends and entrepreneurs, driven by their passion for travel, launched Agoda to ma ...

Senior QA Engineer: Full Stack, ML & Cloud Test Lead

A leading healthcare solutions provider in Toronto is seeking a Senior Quality Assurance (QA) Engineer to lead testing efforts for clinical solutions. The successful candidate will ensure quality across development processes, define test automation systems, and collaborate with product management. This role requ ...

Lead Staff Software Engineer, Front End Deal Manager Experiences

Overview What we do: Our Lead Staff Software Engineers are end-to-end owners who participate in designing, building, and delivering data-focused products for our stakeholders. At The Trade Desk, we believe that each opportunity to engage with consumers is unique. User experience should enable our ...

Lead Engineer, Design Standards / ingenieur principal, normes de conception

About the job We are seeking a highway design engineer with extensive transportation engineering experience in design and construction. You will interpret engineering standard specifications and policies to produce effective construction contracts for Ontario’s highways and bridges. Join the High ...

Lead R&D Engineer in AI/ML and HPC

Elevate your career as an R&D Engineer focused on AI/ML and high-performance computing. Build innovative workloads on a leading wafer-scale architecture to set new performance standards.This role within the Advanced Technology Group involves designing advanced scientific workflows and collaborating with inte ...

AI Native Full Stack Engineer — Lead Go/React/TS

A leading CI/CD platform is looking for an experienced engineer to take ownership of building AI-native solutions. You will define the technical approach, build end-to-end features, and lead system design discussions. The ideal candidate has over 5 years of full-stack experience, strong capabilities in React, Ty ...

Lead AI Engineer, NLQ & Agentic Systems Toronto, Ontario, Canada

Upwork Inc.’s (Nasdaq: UPWK) family of companies connects businesses with global, AI-enabled talent across every contingent work type including freelance, fractional, and payrolled. This portfolio includes the Upwork Marketplace, which connects businesses with on-demand access to highly skilled talent acro ...

Senior Full Stack Engineer: UI/UX & Data Pipelines Lead

A technology solutions firm is seeking a Senior Full Stack Developer to design and implement data pipelines while delivering high-quality applications. The ideal candidate has over 10 years of experience with Spring Framework, React, CSS, and mobile device coding. This position requires expertise in developing c ...

Lead AI Engineer, NLQ & Agentic Systems Toronto, Ontario, Canada

Upwork Inc.’s (Nasdaq: UPWK) family of companies connects businesses with global, AI-enabled talent across every contingent work type including freelance, fractional, and payrolled. This portfolio includes the Upwork Marketplace, which connects businesses with on-demand access to highly skilled talent across the ...

Lead AI Voice Engineer — Real Time Public Safety (Remote)

A mission-driven SaaS startup in Canada is seeking an Engineering Lead for their Voice AI product aimed at improving emergency response communications. The role involves software architecture, integrating advanced AI technologies, and leading a small team. Ideal candidates will have a strong background in softwa ...

Lead Staff Software Engineer, Front End Deal Manager Experiences

Overview What we do: Our Lead Staff Software Engineers are end-to-end owners who participate in designing, building, and delivering data-focused products for our stakeholders. At The Trade Desk, we believe that each opportunity to engage with consumers is unique. User experience should enable our users to harnes ...

Lead Staff Engineer in Offensive Security and Red Teaming

Elevate security standards as a Staff Offensive Security Engineer. Focus on red teaming, real-world testing, and strategic collaboration in a vibrant office setting dedicated to financial innovation.As a central figure, you will lead red team operations and assess vulnerabilities across applications an ...

Lead Engineer, Design Standards / ingenieur principal, normes de conception

About the job We are seeking a highway design engineer with extensive transportation engineering experience in design and construction. You will interpret engineering standard specifications and policies to produce effective construction contracts for Ontario’s highways and bridges. Join the Highway Design Offic ...

Lead Software Engineer Front End (Bangkok based, Relocation provided)

Lead Software Engineer - Front End (Bangkok based, Relocation provided) 2 weeks ago Be among the first 25 applicantsAt Agoda, we bridge the world through travel. Our story began in 2005, when two lifelong friends and entrepreneurs, driven by their passion for travel, launched Agoda to make it easier fo ...

Lead Physical Design Engineer for Next Gen Technology Development

Become a key player in advancing physical design methodologies for cutting-edge technology. Thrive in a collaborative environment, focusing on low power, high-speed designs, and successful tapeouts.This role involves leading next-generation physical design efforts and developing methodologies in advanc ...

AI Native Full Stack Engineer — Lead Go/React/TS

A leading CI/CD platform is looking for an experienced engineer to take ownership of building AI-native solutions. You will define the technical approach, build end-to-end features, and lead system design discussions. The ideal candidate has over 5 years of full-stack experience, strong capabilities in React, Ty ...

Lead Data and Machine Learning Engineer in Innovative Team

Become a key technical leader as a Data and ML Engineer in a dynamic environment. Drive architectural decisions and foster collaboration while turning complex data into actionable insights.In your role as Senior Data & ML Engineer, you will lead a high-impact team and influence architectural quality. Y ...

Senior QA Engineer: Full Stack, ML & Cloud Test Lead

A leading healthcare solutions provider in Toronto is seeking a Senior Quality Assurance (QA) Engineer to lead testing efforts for clinical solutions. The successful candidate will ensure quality across development processes, define test automation systems, and collaborate with product management. This role requ ...

Senior Full Stack Engineer: UI/UX & Data Pipelines Lead

A technology solutions firm is seeking a Senior Full Stack Developer to design and implement data pipelines while delivering high-quality applications. The ideal candidate has over 10 years of experience with Spring Framework, React, CSS, and mobile device coding. This position requires expertise in developing c ...

Senior QA Engineer: Full Stack, ML & Cloud Test Lead

A leading healthcare solutions provider in Toronto is seeking a Senior Quality Assurance (QA) Engineer to lead testing efforts for clinical solutions. The successful candidate will ensure quality across development processes, define test automation systems, and collaborate with product management. This role requ ...

Lead Staff Software Engineer, Front End Deal Manager Experiences

Overview What we do: Our Lead Staff Software Engineers are end-to-end owners who participate in designing, building, and delivering data-focused products for our stakeholders. At The Trade Desk, we believe that each opportunity to engage with consumers is unique. User experience should enable our ...

Senior Analog/RF IC Layout Engineer Lead High Speed

A leading technology firm in Toronto is looking for a Senior Analog / RF IC Layout Engineer. This role involves designing advanced mixed-signal silicon and collaborating with design teams to ensure layout quality while mentoring junior engineers. The candidate should have over 6 years of experience in high-speed ...

Lead Software Engineer Front End (Bangkok based, Relocation provided)

Lead Software Engineer - Front End (Bangkok based, Relocation provided) 2 weeks ago Be among the first 25 applicants At Agoda, we bridge the world through travel. Our story began in 2005, when two lifelong friends and entrepreneurs, driven by their passion for travel, launched Agoda to ma ...

AI Native Full Stack Engineer — Lead Go/React/TS

A leading CI/CD platform is looking for an experienced engineer to take ownership of building AI-native solutions. You will define the technical approach, build end-to-end features, and lead system design discussions. The ideal candidate has over 5 years of full-stack experience, strong capabilities in React, Ty ...

Senior QA Engineer: Full Stack, ML & Cloud Test Lead

A leading healthcare solutions provider in Toronto is seeking a Senior Quality Assurance (QA) Engineer to lead testing efforts for clinical solutions. The successful candidate will ensure quality across development processes, define test automation systems, and collaborate with product management. This role requ ...

Lead Software Engineer Front End (Bangkok based, Relocation provided)

Lead Software Engineer - Front End (Bangkok based, Relocation provided) 2 weeks ago Be among the first 25 applicants At Agoda, we bridge the world through travel. Our story began in 2005, when two lifelong friends and entrepreneurs, driven by their passion for travel, launched Agoda to ma ...

Lead Staff Software Engineer, Front End Deal Manager Experiences

Overview What we do: Our Lead Staff Software Engineers are end-to-end owners who participate in designing, building, and delivering data-focused products for our stakeholders. At The Trade Desk, we believe that each opportunity to engage with consumers is unique. User experience should enable our ...

Lead Physical Design Engineer for Next Gen Technology Development

Become a key player in advancing physical design methodologies for cutting-edge technology. Thrive in a collaborative environment, focusing on low power, high-speed designs, and successful tapeouts.This role involves leading next-generation physical design efforts and developing methodologies in advanced tec ...

AI Native Full Stack Engineer — Lead Go/React/TS

A leading CI/CD platform is looking for an experienced engineer to take ownership of building AI-native solutions. You will define the technical approach, build end-to-end features, and lead system design discussions. The ideal candidate has over 5 years of full-stack experience, strong capabilities in React, Ty ...

Lead AI Engineer, NLQ & Agentic Systems Toronto, Ontario, Canada

Upwork Inc.’s (Nasdaq: UPWK) family of companies connects businesses with global, AI-enabled talent across every contingent work type including freelance, fractional, and payrolled. This portfolio includes the Upwork Marketplace, which connects businesses with on-demand access to highly skilled talent acro ...

Lead Physical Design Engineer for Next Gen Technology Development

Become a key player in advancing physical design methodologies for cutting-edge technology. Thrive in a collaborative environment, focusing on low power, high-speed designs, and successful tapeouts.This role involves leading next-generation physical design efforts and developing methodologies in advanced tec ...

Senior Full Stack Engineer: UI/UX & Data Pipelines Lead

A technology solutions firm is seeking a Senior Full Stack Developer to design and implement data pipelines while delivering high-quality applications. The ideal candidate has over 10 years of experience with Spring Framework, React, CSS, and mobile device coding. This position requires expertise in developing c ...

Lead AI Engineer, NLQ & Agentic Systems Toronto, Ontario, Canada

Upwork Inc.’s (Nasdaq: UPWK) family of companies connects businesses with global, AI-enabled talent across every contingent work type including freelance, fractional, and payrolled. This portfolio includes the Upwork Marketplace, which connects businesses with on-demand access to highly skilled talent acro ...

Intern DevOps Engineer Role BDO Digital

Step into the world of cloud technology as an Intern DevOps Engineer at BDO Digital. Join the AppDev team from September to December 2026 and expand your skillset.In this role, you will support the design and management of secure Azure cloud environments. Utilizing tools such as Terraform and GitHub, you wil ...

Senior Data Engineer with AWS Expertise

Join EPAM's dynamic team as a Senior Data Platform Engineer, leveraging AWS to build next-gen data solutions. Utilize your strong Python skills to enhance data product integrity and performance.In this impactful role, you'll design secure and scalable data platforms on AWS utilizing tools like EMR, Glue, and ...

Remote Analytics Data Engineer Role

Explore a dynamic Remote Analytics Data Engineer position focused on Treasury and Finance. Utilize your programming and data engineering skills to influence business strategies through data insights.We are looking for candidates with 8-10 years of experience in Python, SQL, and SAS for this remote role. Your ...

Beanfield Software Engineer I Position

Join Beanfield as a Software Engineer I and be part of a collaborative team. Focus on backend development using Python and Java while designing scalable systems and APIs.In this role, you will work within a technology-driven environment, contributing to software development and implementation focusing on cor ...

Senior Software Engineer Hybrid Trading Start Up

Shape the future of financial technology as a Senior Software Engineer at a Toronto start-up specializing in trading solutions. Emphasize your Python and C++ coding skills in a hybrid work environment.This role offers a six-month contract with opportunities for a permanent position, allowing you to influence ...

Creative Data Engineer Leveraging Technology for Retail Solutions

Advance your career as a Data Engineer, creating impactful data solutions for retail through technology. Focus on scalable data pipelines and innovative AI integrations using Google BigQuery and Python.You will contribute significantly to the optimization of data systems, ensuring clean, reliable data for in ...

Innovative Remote AI Engineer for Financial Workflow Automation

Shape the future of finance as a Remote AI Engineer dedicated to innovative AI applications in workflow automation. Build and deploy cutting-edge AI systems to enhance compliance and operational efficiency for financial services.In this position, you will work on designing production-scale AI models specific ...

Innovative Remote AI Engineer for Financial Workflow Automation

Shape the future of finance as a Remote AI Engineer dedicated to innovative AI applications in workflow automation. Build and deploy cutting-edge AI systems to enhance compliance and operational efficiency for financial services.In this position, you will work on designing production-scale AI models specific ...

IBM Developer Intern Data Focused

Begin your journey with IBM as a Data-Focused Developer Intern in Toronto. Harness your cloud knowledge and programming skills in a dynamic, collaborative setting.As an intern at IBM Consulting, you will collaborate with teams to engineer solutions that tackle real data challenges. This role will allow ...

Innovative Software Engineer in Test Focused on Automation

Unlock your potential as an Innovative Software Engineer in Test specialized in automation using Java/Python. This hybrid role is designed for those who excel in creating quality frameworks and testing solutions.In this position, you'll leverage 8-10 years of QE/SDET experience to design, develop, and ...

Data Science Engineer Opportunities in Generative AI & Problem Design

Contribute to Generative AI as a Data Science Engineer developing innovative training problems. Remote work allows you to leverage Python and SQL in shaping the future of AI.In this role, you will engage in real-world applications by creating sophisticated data science problems that require complex reasoning ...

Data Engineer at Tokio Marine Canada

Enhance analytics with Tokio Marine Canada as a Data Engineer. This hands-on role focuses on building robust data pipelines using Snowflake and Python to support business insights across various functions.In this position, you will design and maintain scalable ELT pipelines, transforming diverse data sources ...

AWS Developer & Data Solutions Engineer TCS (Toronto)

Advance as an AWS Developer and Infrastructure Cloud Engineer with Tata Consultancy Services. Focus on building scalable cloud architect solutions and managing data workflows. In this role, you will leverage AWS services and tools to create robust cloud infrastructure and maintain data pipelines. T ...

AI Engineer for Global Security at RBC

Join RBC as an AI Engineer focusing on global security. Utilize your expertise in Python, machine learning, and large language models to create advanced AI solutions.In this pivotal role, you will develop and deploy scalable AI systems aimed at threat detection and response. With a background in softwa ...

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