211,437+ Lead Software Engineer Pythonreact 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

Senior Fullstack Software Engineer, AI Agents

Why 11x NowAt 11x, we're building autonomous digital workers that handle routine work end-to-end, freeing humans to focus on what they do best—creating, innovating, and building meaningful relationships. We're one of the world’s fastest-growing AI companies. We've achieved a 20x increase in ARR and rai ...

Principal Software Engineer FinTech Scale Architect

A leading global staffing and consulting firm is seeking a Principal Software Engineer to design and build technology for a global financial ecosystem. The role involves architecting platforms for millions of transactions, mentoring engineers, and ensuring compliance with security protocols. Ideal candidates are ...

Principal Software Engineer: Global Fintech Payments

A global fintech leader is seeking a Principal Software Engineer to lead the design of high-scale systems that facilitate global transactions. With over 10 years of experience in building distributed systems and expertise in Java, C++, or Python, candidates will be responsible for mentoring engineers and ensurin ...

Staff Software Engineer, Modeling Platform (Remote)

A leading technology firm in Toronto is seeking a Staff Software Engineer to lead the technical strategy for a modeling platform. This role involves designing scalable distributed systems and making impactful technical decisions. The ideal candidate will have over 8 years of software engineering experience, with ...

Senior Software Engineer: Own Impact & Remote

A PropTech company in Toronto is seeking a Senior Software Engineer to build and scale their SaaS platform. You will work across the full stack, contributing to both Angular and Node.js frameworks, ensuring fast deployment and customer impact. This role requires an ownership mentality and senior-level engineerin ...

Senior Java Software Engineer Banking Experience

Job LocationDowntown Toronto (3 days work from office) Job DescriptionAs a Senior Java Software Engineer, you will be responsible for designing, developing, and maintaining high-performance applications using Java and the Spring Boot framework. You will work closely with cross-functional team ...

Senior Dynamics 365 Software Engineer Hybrid

A leading tech services firm in Toronto is looking for a Senior Software Developer to design and implement solutions using Microsoft Dynamics 365. The ideal candidate has extensive experience in C# and ASP.NET, working with enterprise applications in a hybrid model. Responsibilities include developing customized ...

Embedded Software Verification Engineer — Automation & HIL

A technology company in Toronto seeks a Product & Software Verification Engineer to ensure the quality and performance of embedded products. Responsibilities include developing verification plans, conducting tests, and collaborating with engineering teams. Ideal candidates should have a degree in engineering or ...

Software Development Engineer, Personnel Resource Manager

Description The Worblehat team is looking for a Software Development Engineer to join our mission‑critical platform that automates operational compliance across Amazon's global fulfillment network. This unique role impacts millions through the Personnel Resource Manager (PRM) system, which automates eligibility ...

Senior Software Engineer AI (Materia AI)

Senior Software Engineer - AI (Materia AI) Are you excited about building AI-driven software that redefines how professionals work? Join a dynamic and highly skilled team at Thomson Reuters, where we combine the agility and innovation of a startup with the stability and resources of a global leader. As a<br ...

Senior Software Engineer AI (Materia AI)

# **Our Privacy Statement & Cookie Policy**This posting is for proactive recruitment purposes and may be used to fill current openings or future vacancies within our organization.**Senior Software Engineer – AI (Materia AI)**We’re building the next generation of AI‑powered systems for tax and accounting professi ...

Backend Software Engineer AI Platform Leader

Backend Software Engineer Build reliable backend systems that power AI platform features. You will develop APIs, services, and infrastructure that support scalable product capabilities.What You’ll DoBuild backend services and APIs that support core product workflows.Develop data pip ...

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 ...

Senior Staff Software Engineer Debt Resolution

About Nubank Nu is the world’s largest digital banking platform outside of Asia, serving over 123 million customers across Brazil, Mexico, and Colombia. The company has been leading an industry transformation by leveraging data and proprietary technology to develop innovative products and services. Guided by its ...

Frontend Software Engineer AI Platform Leader

About The Role Build responsive and elegant web interfaces that allow users to interact with powerful AI capabilities through simple and intuitive workflows.Frontend Software Engineer Build responsive and elegant web interfaces that allow users to interact with powerful AI capabilities through simple a ...

Remote Software Engineer, Capital Markets & Analytics

A leading banking institution is seeking Software Engineers in Toronto who are eager to enhance capital markets products and analytics. The role involves developing solutions, working in Agile teams, and using modern technologies. Ideal candidates have at least 4 years of experience with languages like Java or P ...

Staff Software Engineer: Platform & AI Architect

A leading software company in Toronto is seeking a Staff Engineer to shape its technical direction and influence various strategic areas. The role involves navigating complex problems, championing systemic improvements, and upholding engineering standards. Candidates should have over 10 years of experience in so ...

Senior Software Engineer, Global Scale Systems

A leading technology company in Toronto is seeking a Software Engineer V to design and architect systems that support global-scale applications. You will utilize modern programming languages and distributed systems to ensure high reliability and performance. This role involves mentoring engineers and shaping pro ...

Frontend Software Engineer AI Platform Leader

Frontend Software Engineer Build responsive and elegant web interfaces that allow users to interact with powerful AI capabilities through simple and intuitive workflows.What You’ll DoBuild web applications using React, TypeScript, or similar technologies.Integrate frontend interface ...

Senior Software Engineer Product AI & LLM

A leading staffing and consulting firm in Toronto is seeking a Senior Software Engineer specializing in AI to develop product features using LLMs and integrate machine learning services. The ideal candidate has over 5 years in software development and strong proficiency in Python. Key responsibilities include de ...

Senior Software Engineer, Platform Streaming (Auth0)

About Okta Okta is The World’s Identity Company. We free everyone to safely use any technology, anywhere, on any device or app. Our flexible and neutral products, Okta Platform and Auth0 Platform, provide secure access, authentication, and automation, placing identity at the core of business security and growth. ...

Quantum Software Engineer: DSLs, Compilers & Hardware

A tech firm specializing in quantum computing is seeking a Scientific Software Engineer to tackle software challenges in integrating applications into quantum computers. The role involves developing domain-specific languages, supporting customers, and collaborating with a scientific software team. Ideal candidat ...

Software Engineer 3, Atlas Search Systems

Atlas Search ( is a multi-cloud service that allows users to execute complex full text and vector search queries using the MongoDB Query Language ( Our users are free to focus on relevance and data retrieval instead of the machinery needed to search data at scale.Our team is building the cloud-based di ...

Senior / Staff Software Engineer, Simulation Platform

Waabi, founded by AI visionary Raquel Urtasun, is the leader in Physical AI. With a world-class team, we’re unlocking the next era of autonomous transportation with technology that’s powering commercial autonomous trucks and robotaxis. Waabi is backed by and partners with world leaders in AI, automotive, logisti ...

Software Engineer II, Backend (AI Agents)

Affirm is reinventing credit to make it more honest and friendly, giving consumers the flexibility to buy now and pay later without any hidden fees or compounding interest.We're looking for a Software Engineer II to join the AI Agents engineering team within the Servicing Engineering organization. Our ...

Senior Software Engineer, AI Security & DevSecOps

A cutting-edge AI company in Toronto is seeking a Senior Software Engineer focusing on security. You will be responsible for developing and implementing security features, ensuring safe user authentication, and managing sensitive data. Ideal candidates have over 5 years of experience in secure software developme ...

Senior Software Engineer – IDE & Desktop Applications

Senior Software Engineer – IDE & Desktop ApplicationsAt Cognichip, we are building the next-generation IDE to empower semiconductor design engineers with a 10x productivity boost through AI-native workflows and seamless integration with high-performance simulation engines. We are seeking an experienced ...

Software Engineer II (BFUTR Future Opportunity)

Nous utilisons des témoins pour fournir et améliorer nos services de sorte à vous offrir une expérience plus personnalisée, et les services de suivi sont désactivés. Pour en savoir plus sur les témoins utilisés et pour consulter vos préférences, veuillez vérifier les paramètres de votre navigateur ou sélectionne ...

Senior Software Engineer – Concurrency & UI (TypeScript)

A leading software company in Ontario seeks a Software Developer to join their Agile team working on the Concurrency project within Fusion. The role involves implementing features, maintaining code, and collaborating with remote teams. Ideal candidates should have over 5 years of experience in software developme ...

Principal Software Engineer Fintech Global Leader

Principal Software Engineer – Global Fintech We are seeking an accomplishedPrincipal Software Engineerto lead the design and development of mission-critical financial platforms. In this role, you will architect scalable, secure, and high-performance systems that power global payments, trading ...

Senior Software Engineer, AI Ecosystems (Auth0)

Overview Okta is The World’s Identity Company. We free everyone to safely use any technology, anywhere, on any device or app. Our flexible and neutral products, Okta Platform and Auth0 Platform, provide secure access, authentication, and automation, placing identity at the core of business security and growth.<b ...

Senior Software Engineer Distributed Storage & DB

A innovative procurement platform company in Toronto seeks an experienced software engineer to lead improvements on their data access layer for scalability and performance. With a focus on supporting global expansion, this role requires over 5 years of software engineering experience, especially in cloud infrast ...

Senior Software Engineer AI (Materia AI)

# **Our Privacy Statement & Cookie Policy**This posting is for proactive recruitment purposes and may be used to fill current openings or future vacancies within our organization.**Senior Software Engineer – AI (Materia AI)**We're building the next generation of AI‐powered platforms for tax and accounting profes ...

Principal Software Engineer Fintech Global Leader

Principal Software Engineer – Global Fintech About The Role We are seeking an accomplishedPrincipal Software Engineerto lead the design and development of mission‑critical financial platforms. In this role, you will architect scalable, secure, and high‑performance systems that power global pa ...

Sr. Software Engineer AI Tech Leader

Software Engineer V – Global Scale SystemsThe Challenge Billions of people rely on our systems every day — to connect, to create, to work, to play. Each millisecond of latency matters. Each system outage ripples across the globe. As aSoftware Engineer V , you won’t just write code — you’ll de ...

Principal Software Engineer Fintech Global Leader

Principal Software Engineer – FinTech at Global Scale The Challenge Every second, billions of dollars move across the globe. Behind those transactions are systems that must besecure, lightning fast, and highly reliable . As aPrincipal Software Engineer , you’ll design and build the technology ...

Senior Software Engineer, Payroll Platform (Serverless)

A leading global workforce solutions company in Toronto is seeking a Senior Software Engineer to develop and scale reliable payroll solutions. This role involves collaborating with product and design teams to deliver impactful features. Candidates should have over 5 years of experience with a strong focus on bac ...

Senior Software Engineer II, Design Systems

The Company You’ll JoinCarta connects founders, investors, and limited partners through world-class software, purpose-built for everyone in venture capital, private equity and private credit. Trusted by 65,000+ companies in 160+ countries, Carta’s platform of software and services lays the groundwork s ...

Quantum Software Engineer — Physical Architecture (Equity)

A technology company focused on quantum computing is seeking a Software Developer for their Physical Architecture team. You will design, build, and optimize software that supports cutting-edge quantum architecture research. The ideal candidate has a BSc in a relevant field and proficiency in Python. Experience w ...

Quantum R&D Tooling Software Engineer

A leading quantum computing company in Toronto seeks a Software Developer to contribute to software and hardware products. Responsibilities include designing simulation tooling, collaborating with engineers, and maintaining production code. The ideal candidate has a BSc in a related field and 3+ years of softwar ...

Senior Software Engineer Identity Threat Protection

Senior Software Engineer - Identity Threat Protection Get to know Okta Okta is The World’s Identity Company. We free everyone to safely use any technology, anywhere, on any device or app. Our flexible and neutral products, Okta Platform and Auth0 Platform, provide secure access, authentication, and automation, p ...

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 ...

Sr. Software Engineer in Test (Python)

Sr. Software Engineer in Test Department:Research & DevelopmentEmployment Type:Full TimeLocation:Canada-CHQ-Ontario-TorontoCompensation:$123,300 - $169,500 / yearDescription This full-time, on-site position is ideal for experienced S ...

Senior ML Software Engineer Integration & Quality

Overview Cerebras Systems builds the world's largest AI chip, 56 times larger than GPUs. Our novel wafer-scale architecture provides the AI compute power of dozens of GPUs on a single chip, with the programming simplicity of a single device. This approach allows Cerebras to deliver industry-leading training and ...

Staff Software Engineer, Employee Lifecycle Management

About Toast:Toast creates technology to help restaurants and local businesses succeed in a digital world, helping business owners operate, increase sales, engage customers, and keep employees happy.Bready to make a change?Toast is a rapidly growing company that's revolutionizing how ...

Senior Software Engineer AI SaaS Focus

Transform how software is engineered at Process Street as a Senior Software Engineer with a focus on AI SaaS. This fully remote role emphasizes creativity and technical expertise in a dynamic environment.As a Senior Software Engineer, you’ll not only architect backend systems but also reimagine enginee ...

Software Development Engineer, Amazon Aurora PostgreSQL

DescriptionLooking to be part of a team building hyper-scale database services in the cloud? Do you want to revolutionize the way people manage vast volumes of data in the cloud where you have direct and immediate impact on hundreds of thousands of users who use AWS database services? Aurora is one of ...

Amazon Software Engineer II, Measurement Team

Be at the forefront of Amazon's advertising efforts as a Software Engineer II within the Measurement and Data Science division. Work with Big Data technologies like Elasticsearch and AWS services to create impactful analytics products.This role emphasizes building and refining systems capable of managi ...

MTS2 Software Engineer, iOS, eBay Live

At eBay, we're more than a global ecommerce leader — we’re changing the way the world shops and sells. Our platform empowers millions of buyers and sellers in more than 190 markets around the world. We’re committed to pushing boundaries and leaving our mark as we reinvent the future of ecommerce for enthusiasts. ...

Voice Insights Staff Software Engineer Role

Join SoundHound AI as a Staff Software Engineer focused on Voice Insights. Create scalable applications that leverage voice technology to enhance users' interactions in the restaurant industry.In this pivotal role within the Restaurant Applications team, you'll be responsible for designing and architec ...

🚀 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 Software Engineer Pythonreact Jobs in Toronto Job Search Guide, Trends and Insights