154,319+ Lead Fullstack Engineer Python Fastapi Jobs in Toronto, Canada — Local Employers Hiring June 2026

Professional job seekers finding Canada jobs through Expertini
750,000+ professionals on Expertini 750,000+ Candidates
Join our global community
Expertini Penguin Mascot Resume Score™
Resume Score™ Instantly
Upload Your CV
Quick 30-second process

Apply Today & Jumpstart Your Career on Expertini, Trusted Since 2008.

Reset

Create Job Alert

 
   
Reset

Software Engineer, Collect — Build Internal AI Tools (Remote)

A leading AI technology company in Toronto is seeking a Software Engineer to develop critical internal tools and collaborate with a talented team. The ideal candidate has experience in both front-end and back-end development, and familiarity with Next.js, TypeScript, React, and Python. Join this inclusive enviro ...

Senior Backend Engineer, AI Platform & MLOps

A leading AI solutions company is hiring an ML Engineer in Toronto, Canada. In this role, you will design and maintain serving stacks for machine learning models and automate training pipelines using Kubernetes. Candidates should have solid experience with Python and knowledge of ML infrastructures. Join a team ...

Senior Backend Engineer, AI Platform & MLOps

A leading AI solutions company is hiring an ML Engineer in Toronto, Canada. In this role, you will design and maintain serving stacks for machine learning models and automate training pipelines using Kubernetes. Candidates should have solid experience with Python and knowledge of ML infrastructures. Join a team ...

Software Engineer, Collect — Build Internal AI Tools (Remote)

A leading AI technology company in Toronto is seeking a Software Engineer to develop critical internal tools and collaborate with a talented team. The ideal candidate has experience in both front-end and back-end development, and familiarity with Next.js, TypeScript, React, and Python. Join this inclusive enviro ...

Senior ML Engineer: NLP + BERT, Deep Learning Pro

A technology firm in Toronto is seeking a Senior Machine Learning Engineer. The role involves creating and deploying machine learning models to meet business objectives. The ideal candidate will have deep knowledge of machine learning concepts, proficiency in frameworks like TensorFlow and PyTorch, and strong pr ...

Senior Backend Architect Remote, Scale Global Lifecycle

A leading financial technology company located in Hamilton, Ontario seeks an experienced backend software engineer to build a brand new lifecycle-orchestrator service. Candidates should have over 5 years of experience in backend systems design, familiarity with Kotlin and Python, and strong communication skills. ...

Senior Software Engineer Backend, Frontend & Cloud

A leading financial services company in Toronto is looking for a Principal Associate, Software Engineer. In this role, you will be responsible for backend and frontend development, utilizing programming languages like Java and Python. We offer a hybrid work environment and comprehensive benefits including mental ...

Healthcare Cloud SRE EMR Reliability & Automation

A leading digital consultancy in Canada is seeking a Site Reliability Engineer (SRE) to support mission-critical systems handling sensitive patient data. This role involves architecting and maintaining cloud infrastructure across AWS and GCP, ensuring high availability and security. Ideal candidates will have st ...

Senior Software Engineer Fintech, Scale Big Data (AWS)

A leading fintech startup in Toronto is seeking a Senior Software Engineer to drive projects from implementation to deployment. The ideal candidate will have strong expertise in Python and Django, hands-on experience with AWS services, and a knack for debugging large codebases. You'll work in a collaborative cul ...

Senior Software Engineer Hybrid, Data Platforms

A global data and insights firm in Toronto is looking for a Senior Software Engineer to design and enhance systems powering products and analytics. The role calls for strong skills in languages like C# and Python, experience in software architecture, and a knack for mentoring colleagues. This position offers a h ...

Open Source LLM Inference & Model Optimization Engineer

A leading open-source software company in Toronto is seeking a Machine Learning Engineer to optimize models and collaborate with product teams. You will be responsible for developing algorithms and enhancing model performance. Ideal candidates will have strong backgrounds in machine learning, Python, and relevan ...

ML Engineer Build Scalable AI for Fintech & MLOps

A leading fintech company in Toronto is seeking a Machine Learning Engineer passionate about AI solutions and optimizing ML systems. You will be responsible for designing and deploying machine learning pipelines, implementing MLOps best practices, and collaborating on data pipeline development. The ideal candida ...

Senior ML Engineer: NLP + BERT, Deep Learning Pro

A technology firm in Toronto is seeking a Senior Machine Learning Engineer. The role involves creating and deploying machine learning models to meet business objectives. The ideal candidate will have deep knowledge of machine learning concepts, proficiency in frameworks like TensorFlow and PyTorch, and strong pr ...

Senior Software Engineer Backend, Frontend & Cloud

A leading financial services company in Toronto is looking for a Principal Associate, Software Engineer. In this role, you will be responsible for backend and frontend development, utilizing programming languages like Java and Python. We offer a hybrid work environment and comprehensive benefits including mental ...

Senior Data Engineer — Treasury Analytics (Remote)

A leading analytics company in Toronto is seeking an experienced Analytics Data Engineer to gather and preprocess data, perform statistical analysis, and develop ETL pipelines. The ideal candidate has 8-10 years of experience with Python, SAS, and SQL, alongside skills in Power BI and data visualization tools. T ...

Snowflake Data Engineer | DBT & SQL Specialist | P&C Insurance | Hybrid

A leading technology company is seeking a Snowflake Data Engineer for a hybrid role in Toronto. The ideal candidate will have extensive experience with the Snowflake cloud data platform and strong SQL skills. Responsibilities include designing data processes, collaborating with teams, and mentoring juniors. This ...

Senior Backend Engineer, AI Platform & MLOps

A leading AI solutions company is hiring an ML Engineer in Toronto, Canada. In this role, you will design and maintain serving stacks for machine learning models and automate training pipelines using Kubernetes. Candidates should have solid experience with Python and knowledge of ML infrastructures. Join a team ...

Senior Software Engineer Energy Systems & Sustainability

A leading clean-tech software company in Toronto is seeking a Backend Engineer to drive energy management solutions. The role requires 4+ years of experience in Golang and Python, focusing on building scalable systems with a commitment to sustainability. Responsibilities include conducting code reviews, optimizi ...

Software Engineer, Collect — Build Internal AI Tools (Remote)

A leading AI technology company in Toronto is seeking a Software Engineer to develop critical internal tools and collaborate with a talented team. The ideal candidate has experience in both front-end and back-end development, and familiarity with Next.js, TypeScript, React, and Python. Join this inclusive enviro ...

Sr. Quality Engineer

Job Description What is the opportunity?The RBC Team is hiring for Sr. Quality Engineer role within GFT Team. As a Sr. Quality Engineer, you provide support for a suite of business mission-critical and complex applications, understanding both front and back-end of the applications. Th ...

Five9 Contact Center Engineer

Title: Five9 Contact Center Engineer Duration: 6 months Location: Hybrid – 2 days/week in : Burlington Position Summary We are seeking a highly skilled and certified Five9 Contact Center Engineer to take full ownership of our cloud ...

Lead Risk Manager, Payment Fraud

About the Client Our client is one of Canada’s fastest-growing fintech platforms, transforming how consumers pay, save, and earn rewards through a single seamless app. The company processes over USD $100M in annual transaction volume (TPV) with a base of 250,000+ users across North America, and it ...

Senior DevOps Engineer

Localcoin, founded in 2017 with headquarters in Toronto, is on a mission to simplify the process and experience of buying or selling digital currencies globally. We envision bringing digital currency to the mainstream financial market through partnerships with leading corporate and franchised retail spaces. With ...

Senior LLM Inference & Model Optimization Engineer

A leading open-source software company seeks a Machine Learning Engineer in Toronto, Canada. You will focus on model optimization algorithms, working closely with product and research teams. Responsibilities include designing and implementing model compression pipelines and optimizing LLM performance. Ideal cand ...

Senior Backend Architect — Scale Core Data Pipelines

A technology company in data management is looking for a Staff Backend Engineer to architect resilient systems for data processing. You will design and oversee the technical direction, ensuring high scalability and performance across distributed systems. Ideal candidates have a robust background in Scala and Pyt ...

Senior Data Engineer, Real Time Multi Tenant Analytics

A leading tech company is seeking a Senior Data Engineer to architect and build data infrastructure for influencer marketing analytics. The role involves designing ETL pipelines, implementing security models, and optimizing performance for large datasets. Ideal candidates should possess over 5 years of data engi ...

Senior Agentic AI Engineer: Multi Agent Systems & LLM Ops

A leading AI solutions provider in Toronto is looking for a Senior AI Engineer to leverage expertise in agentic AI systems and cloud deployment. The ideal candidate has significant experience in building multi-agent architectures and RAG pipelines on AWS. Key responsibilities include optimizing AI systems for en ...

Finance Planning Tech Lead: Hyperion, FDMEE & Essbase

A leading banking institution in Toronto is seeking a skilled Software Engineer to develop and support finance planning applications. The ideal candidate has over 5 years of experience with Essbase and Hyperion Planning, as well as strong skills in Python and Oracle DB. This organization values an inclusive cult ...

Senior Snowflake Data Engineer | AWS, Spark & AI Growth

A fast-growing analytics consulting firm is seeking a Data Engineer to architect and implement advanced analytics capabilities. The role requires expertise in data engineering with extensive experience in cloud technologies, particularly AWS. Candidates should possess strong skills in Python, SQL, and large-scal ...

Frontend Engineer, New Products — Hybrid (SF)

A leading vertical SaaS company is seeking a Software Engineer for its New Products team in Toronto. This hybrid role involves building impactful technology to assist personal injury lawyers, aiming to improve client outcomes. Candidates should have 5-10 years of engineering experience, preferably with technolog ...

Senior Data Platform Engineer Scale TB/PB Pipelines

A fast-growing startup in Toronto is seeking a Data Engineer to build and optimize scalable data platforms. The role involves tackling complex backend challenges and engineering solutions for a diverse range of data practices. Candidates should be proficient in Java and Python, with comprehensive knowledge of da ...

Senior Data Engineer Snowflake, AWS & Spark

An analytics consulting firm in Toronto is seeking a Data Engineer to architect and implement advanced analytics capabilities. The ideal candidate will have over 12 years of experience in data engineering with a strong focus on AWS Cloud and large-scale data processing pipelines. Key skills include Python, SQL, ...

Senior Full Stack Engineer — AWS Cloud & React

A leading ecommerce platform in Toronto seeks a MTS 1 Full Stack Engineer to design and build scalable cloud-native software. The ideal candidate has strong experience with Python, Javascript, and AWS services such as Lambda and SQS. You’ll collaborate with diverse teams to ensure high-quality, consumer-facing s ...

AI Platform Engineer: ML Systems & Production

A leading staffing and consulting firm in Toronto is seeking a Machine Learning, AI Software Engineer. You will help build AI-powered capabilities on a modern platform, working on model integration and evaluation frameworks. Ideal candidates have over 2 years of experience in software engineering with machine le ...

AI Platform Backend Engineer & Leader

A global staffing and consulting firm is seeking a Backend Software Engineer to develop and maintain backend services and APIs for an AI platform. Candidates should have at least 2 years of backend engineering experience, proficiency in languages like Python or Java, and familiarity with cloud infrastructure. Th ...

DevOps Software Engineer for AI‑Driven Apps

A financial services company in Toronto is seeking a Software Engineer focusing on DevOps and application development. The ideal candidate will design, build, and support AI-enabled applications while utilizing tools such as React and Python. The role includes developing CI/CD pipelines and API integration, requ ...

Low Latency Backend Engineer – Finance & Trading

A global staffing and consulting firm is seeking a Backend Engineer to develop high-performance systems for a leading hedge fund. The ideal candidate will have 5+ years of experience, expertise in Python, Java, or C++, and a strong background in data-intensive systems. This role requires collaboration with vario ...

Senior Staff Engineer, Developer Productivity & Ecosystem

A leading database software company in Toronto seeks a Senior Staff Engineer to enhance its developer ecosystem. You will partner with engineering leadership to drive developer velocity and efficiency, optimizing software development tools and services. Ideal candidates have 10+ years of experience in developer ...

Senior Data Engineer Dataiku & Full Stack Data Solutions

A dynamic technology company in Toronto is seeking a Senior Data Engineer with extensive experience in SQL and Python. You will design and develop database solutions, collaborate in Agile teams, and produce architecture documentation. Ideal candidates have 8-10 years of experience and strong competencies in data ...

Staff GenAI Engineer: Scale LLMs & AI Platforms

A technology firm specializing in identity solutions is seeking a Staff Machine Learning Engineer to drive the development of scalable AI systems. This role involves designing and implementing AI infrastructure, optimizing machine learning systems, and collaborating with cross-functional teams to deliver innovat ...

Senior AI Backend Engineer – Hybrid Role

A global leader in information services is looking for a Senior Software Engineer to join their AI-driven team in Toronto. This role involves designing backend services for innovative AI solutions focused on accounting workflows. The ideal candidate should have strong Python skills, experience with AI systems, a ...

AI Engineer, ML Ops & Data Pipelines (Azure)

A leading Canadian energy organization is seeking a skilled AI Engineer to design and implement advanced AI systems. The ideal candidate will be proficient in Python and have experience with data engineering, including building data pipelines. The role involves overseeing AI solution lifecycles, deploying cloud- ...

Senior Data Engineer AWS & Data Platform Expert

A large municipal government in Toronto is looking for a Senior Data Engineer to enhance city services through innovative data solutions. The role involves utilizing AWS technologies for building scalable data infrastructure and contributing to data governance and analytics efforts. Ideal candidates should have ...

AI/ML Engineer P&C Insurance on GCP (Toronto)

A technology solutions company located in Toronto is seeking a Mid-Senior level AI/ML Engineer to join their team full-time. The ideal candidate should have 4-6 years of experience in AI/ML engineering, strong proficiency in Python, SQL, and various ML frameworks. Knowledge of P&C insurance and experience with G ...

Senior ML Evaluation Engineer

A leading software company is seeking a Principal Machine Learning Engineer to design evaluation protocols for ML-powered product experiences, ensuring high standards of quality and reliability. The successful candidate will have over 4 years of experience in ML evaluation or applied engineering and strong progr ...

Senior DevSecOps Security Engineer

A tech company in Toronto, Canada is looking for an experienced Security Engineer to enhance application and cloud security. The role requires strong development skills and expertise in modern application security tools. Responsibilities include implementing security practices within CI/CD, conducting threat mod ...

Data Science Engineer (GCP) Remote Canada + Benefits

A leading technology firm in Toronto is seeking a Data Science Engineer with experience in GCP to design and deploy machine learning models. The ideal candidate will have a strong background in statistical analysis and data visualization, proficient in Python and SQL. You will work closely with stakeholders, pro ...

🚀 Boost Your Hiring Chances with Our AI-Powered Tool-Kit

Stand out from thousands of applicants. Use our proven career tools to optimize your applications and land your dream job faster.

To-Do Planner

Organize your job search and personal tasks. All data is confidential.

Open Planner

Wellbeing Center

Access your confidential wellness report and resources to manage job search stress.

Check Wellbeing

Skill Coach

Plan your skill development with O*NET support to stay competitive in your field.

Start Coaching

Outfit Helper

Get AI-powered suggestions on what to wear for your next interview.

Find Outfit

Income Tax Calculator

Plan your finances with our calculator, updated for 2025 tax regulations.

Calculate Tax

Salary Benchmark

Get accurate, AI-supported salary trends to know your worth and negotiate better.

Check Salaries

Interview Practice

Practice for any interview with AI-enabled Q&A sessions. All data is private.

Start Practicing

Interview Predictor

Use our AI-supported tool to predict potential interview questions based on your resume.

Predict Questions

Interview Practice Timer

Use our mock interview trainer to perfect your answers under timed conditions.

Start Timer

Behavioral Mastery

Ace tricky behavioral interviews with our AI-powered practice module.

Master Answers

Question Journal

Confidentially record interview questions you were asked for future reference.

Open Journal

Interview Ace

A comprehensive tool to help you master every aspect of your interviews.

Become an Ace

Q&A Logs

Confidentially track your answers to common questions and refine them over time.

View Logs

Application Planner

Schedule and organize your job applications in one confidential planner.

Open Planner

Cover Letter Tool

Create perfect, tailored cover letters for each application with AI support.

Generate Letter

Resume Score

Get instant feedback on your resume with our NLP-supported analysis tool.

Check My Score

ATS Score

Check your resume's compatibility with Applicant Tracking Systems (ATS).

Check ATS Score

Application Analyzer

Use AI to analyze job descriptions and optimize your application materials.

Analyze Application

Career Visualizer

Confidentially plan and visualize your long-term career path and goals.

Visualize My Career

Offer Genius

Get intelligent insights and strategies to confidently negotiate job offers.

Negotiate Offers

JobFlow

Track your entire job search progress from application to offer with this intelligent tool.

Track My Flow

JobSense

Our intelligent matching engine that provides smart job recommendations.

Get Smart Matches

Networking Toolkit

Tools to build and manage your professional connections. All data is confidential.

Build Network

Professional CV

A classic, O*NET supported template for corporate and professional roles.

Use This Template

Executive CV

A premium, O*NET supported template designed for senior and C-level positions.

Use This Template

Modern CV

A fresh, stylish, O*NET supported template perfect for tech and modern industries.

Use This Template

Creative CV

A visually distinct, O*NET supported template for design and artistic roles.

Use This Template

Minimalist CV

A clean, simple, O*NET supported template that focuses purely on content.

Use This Template

Europass CV

The standard European Union recommended format for wide compatibility.

Use This Template

Student CV

An institution-recommended template perfect for internships and first jobs.

Use This Template

Graduate CV

An institution-recommended template for recent graduates entering the workforce.

Use This Template

Academic CV

The researcher-recommended format for roles in academia and research.

Use This Template

Developer/IT CV

A tech-savvy recommended template to highlight your technical skills.

Use This Template

Skilled Worker CV

A trades-recommended template to showcase hands-on skills and experience.

Use This Template

Monochrome CV

A sleek, black-and-white, O*NET supported template for a professional look.

Use This Template

Art CV

An artist-recommended template that allows your creativity to shine.

Use This Template

Harvard CV

A researcher-recommended template based on the classic Harvard format.

Use This Template

Volunteer Research

Help us improve our platform by joining our community research program.

Join Research

Review Us

Share your experience with our tools to help other job seekers.

Share Experience

Register

Create your free account to save jobs, build your profile, and track applications.

Create Account

Login

Access your dashboard, manage applications, and continue your job search.

Access Your Account

Profile Builder

Create a comprehensive professional profile that attracts recruiters and showcases your skills.

Build Your Profile

View Profile

See your public profile exactly as employers will see it. Make sure it's perfect.

Preview Profile

Bookmarked Jobs

Keep track of all your saved job opportunities in one organized place.

View Saved Jobs

Your Reviews

View and manage all the company reviews you've submitted.

See Your Reviews

Following

Manage the list of companies you follow to stay updated on their new openings.

Manage Following

Find Companies

Discover and research top employers in your country and industry.

Discover Employers

Standalone CV Builder

Use our O*NET supported CV builder to create a professional resume from scratch.

Build Your CV

PDF to DOC (Beta)

Convert your PDF resumes or documents into editable Word (DOC) format.

Convert PDF

DOC to PDF (Beta)

Create universally compatible PDF documents from your Word (DOC) files.

Create PDF

General FAQ

Find answers to common questions about our job site and platform.

Read FAQ

Job Seekers FAQ

Get help and find answers to questions specifically for job seekers.

Get Help

Job Matching

Learn about the technology and algorithms behind how we match you to jobs.

Learn How

Personalized Matching

Discover how we use your profile and activity to provide customized job suggestions.

Learn More

Quick Apply

Understand our fast application process and how to make the most of it.

Learn More

Alert Frequency

Learn how to manage your job alert settings so you get the updates you want.

Manage Settings

Job Alerts Guide

A complete guide to understanding how job alerts work and how to use them effectively.

Read Guide

Resume Matching

Learn how our system matches your resume to job requirements.

Learn More

Ethical Branding

Read our guide to building a professional and ethical personal brand.

Read Guide

Candidate Visibility

Learn how to increase your visibility to recruiters on our platform.

Increase Visibility

Verified Badge

Find out how you can get a verified badge to build trust with employers.

Get Verified

AI ATS Technology

Learn about the advanced AI and ATS technology that powers our platform.

Learn More

ATS Ranking

Understand how Applicant Tracking Systems rank you as an applicant.

Learn More

Semantic Matching

Learn how our AI-powered semantic matching goes beyond keywords.

Learn More

    Lead Fullstack Engineer Python Fastapi Jobs in Toronto Job Search Guide, Trends and Insights