685,638+ Lead Software Engineer Pythonreact Jobs in Canada — Top Companies Hiring June 2026

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Senior Software Engineer Real Time Systems (Hybrid)

A software company in Ottawa is seeking a Software Engineer to develop real-time solutions for public safety and security industries. You will work in a dynamic environment, addressing various software challenges and collaborating with team members. The role offers a hybrid work model, competitive salary range o ...

Senior Staff Software Engineer Fintech Platform Architect

A fintech startup is seeking a Staff Software Engineer to lead technical direction across its platform. This role requires 8+ years of experience with distributed systems and expertise in full-stack development. The engineer will mentor others, build systems, and make key architectural decisions to enhance finan ...

Principal Software Engineer AI Driven Fintech Leader

A leading financial technology firm based in Canada is looking for a Principal Software Engineer to design and deliver complex systems within the QuestX portfolio. The successful candidate will have over 8 years of experience, expert knowledge in NodeJS, ReactJS, and AngularJS, and a proven track record of drivi ...

Senior OR Software Engineer: Optimization & AI (Hybrid)

A leading technology company is seeking an Operations Research Software Developer to optimize supply chains through innovative algorithms and mathematical modeling. The successful candidate will possess a Master's or PhD in a related field and extensive C++ development experience. This role can be hybrid or remo ...

Staff System Software Engineer Network OS & Linux

A leading technology company in Ottawa, Canada, is seeking a Staff Systems Software Engineer to own the maintenance and release of SONiC software for optical switch platforms. This role involves defining production-quality releases, resolving complex system issues, and collaborating with cross-functional teams. ...

Senior Software Systems Validation Engineer (GPU & Linux)

WHAT YOU DO AT AMD CHANGES EVERYTHING At AMD, our mission is to build great products that accelerate next-generation computing experiences—from AI and data centers, to PCs, gaming, and embedded systems. Grounded in a culture of innovation and collaboration, we believe real progress comes from bol ...

Mainframe Software Engineer Impactful On Call & Growth

Une institution financière à Toronto recherche un Ingénieur en logiciels associé pour contribuer à des conceptions techniques et fonctionnelles de haut niveau. Vous participerez au développement d'applications, à la planification des projets et à la révision de code pour garantir la conformité aux normes de qual ...

Senior Software Engineer, Full Stack (Trust & Safety)

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. Trust & Safety Experience owns the customer journeys during authentication, verification, and fraud journeys. You will work as ...

Associate Software Engineer Build & Impact in Tech

Une importante institution financière à Toronto recherche un candidat pour le développement de nouveaux composants logiciels lors de projets d'ingénierie. Vous travaillerez en collaboration avec des partenaires technologiques et aurez l'occasion d'apporter votre expertise technique pour améliorer nos solutions. ...

Senior OR Software Engineer: Optimization & AI (Hybrid)

A leading tech firm in Ottawa is seeking an Operations Research Software Developer to optimize supply chains using innovative algorithms. The position offers an annual cash compensation ranging from $140,000 to $180,000 plus a discretionary bonus. You'll work with C++ and collaborate with an agile team to develo ...

Senior Software Engineer, Full Stack (Trust & Safety)

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. Trust & Safety Experience owns the customer journeys during authentication, verification, and fraud journeys. You will work as ...

Senior Software Engineer, Full Stack (Trust & Safety)

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. Trust & Safety Experience owns the customer journeys during authentication, verification, and fraud journeys. You will work as ...

Senior Software Engineer — Climate & Earth Data Platform

A leading technology firm in Vancouver is seeking a Sr. Software Engineer to join their Data & Platform team. This hybrid role requires 3 days in-office work per week and involves defining and implementing data management systems, conducting design reviews, and mentoring junior engineers. Candidates should have ...

Associate, Software Engineer, New Grad Card Expansion

MUST INCLUDE YOUR RESUME AND UNOFFICIAL TRANSCRIPT IN ONE PDF DOCUMENT IN THE ATTACHMENT SECTION WHEN YOU CREATE YOUR PROFILE TO APPLY. Location Toronto, Ontario About Capital One Canada For over 30 years, we’ve been on a mission to change banking for good and build rela ...

Senior Software Engineer Remote/Hybrid, Scalable Systems

A leading software development company in Toronto is seeking seasoned software developers to enhance productivity through engineering best practices. This role allows for remote work with an option for hybrid participation if located nearby. Candidates should possess over 6 years of experience in software develo ...

Senior Software Engineer AI First Vehicle Platform

A leading tech company in Toronto is seeking an experienced developer who thrives in building impactful systems. The role involves designing and shipping core systems end-to-end, solving complex problems, and working closely with founders. Ideal candidates are comfortable with ambiguity and possess strong proble ...

Senior Software Engineer (Laravel/PHP, Node.js, React)

Senior Software Engineer (Laravel/PHP, Node.js, React) About the Role We are looking for a Senior Software Engineer to own the technical direction of our web platform and lead a small development team of 2–4 engineers. This is a hands‑on leadership role where you will combine deep ...

Senior Software Engineer AppSec/Data Security (Hybrid)

A leading global tech company is seeking a Senior Software Engineer for a hybrid role in Vancouver, BC. You will contribute to developing cutting-edge cybersecurity solutions and collaborate with teams to solve complex problems using your strong skills in Java, Python, and cloud-based applications. The ideal can ...

Senior Software Engineer, Identity Threat Protection (Hybrid)

A leading identity management company in Toronto is seeking a Senior Software Engineer to join its Identity Threat Protection team. This role involves designing and developing cloud-native security products while collaborating closely with cross-functional teams. Candidates should have over 3 years of experience ...

Senior Embedded Flight Software Engineer Hybrid (Montreal)

A leading engineering firm in Montreal is seeking a Senior Embedded Engineer to develop safety-critical embedded systems. The ideal candidate will have a Bachelor's degree in a relevant field and strong experience with C/C++. Responsibilities include collaborating on software design, testing, and documentation, ...

Principal Payments Software Engineer — Remote, Scale & Security

Une entreprise technologique de voyage recherche un(e) Principal Software Engineer (Payments) pour diriger l'équipe des paiements et développer des solutions de paiement robustes et scalables. Basé à Montréal, vous concevrez des systèmes critiques pour des transactions à fort volume. Les candidats doivent avoir ...

Hybrid Toronto: Senior AI‑Driven Software Engineer

A leading financial technology company in Toronto is seeking a Senior Staff Software Developer to contribute to innovative AI-driven applications. The role requires extensive experience in software development, particularly in building complex systems and utilizing AI technologies. A strong background in full-st ...

Senior Software Engineer (C#/C++, Testing Automation)

A leading software company in Toronto is looking for a seasoned Senior Developer to enhance their testing frameworks and automate processes. This role requires 7+ years of development experience with strong skills in C# and .NET. Candidates with experience in trading environments are preferred. The position invo ...

Senior Diagnostics Software Engineer Data Center GPU

A leading tech company in Markham is seeking a Senior Software Development Engineer to develop test suites for their Data Center GPU diagnostics. You will be responsible for the release deliveries, including development and debugging of automation scripts, while collaborating with cross-functional teams to ensur ...

Remote BI Software Engineer — Data Insights & Growth

A leading technology firm in Toronto seeks a Data Analyst to drive insights through robust data solutions. You will tackle complex datasets, collaborate with stakeholders, and engage in A/B testing to improve business performance. The ideal candidate has experience in data preprocessing, excellent communication ...

Software Engineer, Ad Tech Measurement & Data Science

A leading technology company in Toronto is seeking an experienced software developer to innovate and build solutions for advertising metrics. You will collaborate with talented teams to create scalable applications in a dynamic environment. The ideal candidate should have over 3 years of software development exp ...

iOS Software Engineer – Real Time WebRTC & APNS

A consulting firm is seeking an iOS Software Developer to join their Professional Services Department in Surrey, Canada. The role involves collaborating with project managers and clients to develop applications using WebRTC SDKs, troubleshooting existing solutions, and delivering results on time and budget. Idea ...

Staff Software Engineer, Open Source AI Libraries

A leading technology company in Calgary seeks an experienced software engineer to develop high-quality C++ libraries for AI applications. The successful candidate will thrive in collaborative environments, exhibit strong problem-solving skills, and contribute to core codebases while leveraging AI technologies. A ...

Power Systems Software Engineer: Grid Modeling & Studies

A leading energy solutions provider in Toronto is seeking a Power System Software Engineer to develop and implement power system models and algorithms. Responsibilities include conducting power system studies and supporting customer needs. Candidates should have a Master's or PhD in Electrical Engineering and at ...

Senior Software Engineer — Cloud & Data Pipelines (Hybrid)

A leading software company in Toronto is seeking a Software Developer to join their Horizontal Services Engineering team. You will design, implement, and maintain software components in a collaborative, hybrid environment. The ideal candidate has a Bachelor's degree in Computer Science, 5–8 years of experience i ...

Senior Software Engineer Laravel/React & Go API

A growing tech company in Toronto, Ontario is looking for an experienced Software Developer to join their ambitious team. The role involves developing server-side applications using PHP and Golang, optimizing APIs, and implementing front-end features with React.js. This position offers great remote benefits, inc ...

Senior Software Engineer, Risk Tech & Cloud Platforms

A leading financial institution in Toronto is seeking a skilled individual for a technology role that emphasizes a customer-focused culture. This position involves analyzing complex business requirements and proposing technology solutions to support trading and reporting activities. Candidates should possess ext ...

Embedded Software Engineer for Fire Alarm Panels

Une société de technologie internationale recherche un Développeur Logiciel Embarqué pour développer la prochaine génération de panneaux de détection incendie. Basé à Brossard, le candidat participera à l'ensemble du cycle de développement logiciel. Les responsabilités incluent la conception de logiciels fiables ...

Software Development Engineer (Selling Partner Financial Technologies)

Amazon Selling Partner Services team drives the Selling On Amazon business and develops solutions that enable millions of sellers around the world to sell on Amazon's Marketplaces. More than half of shipments for Amazon customers are generated from this business. The team is focused on building a technolog ...

Software Development Engineer II, Amazon Payment Products

Would you like to be a part of a technology team that enables one of the most profitable businesses at Amazon.com? The Amazon Payments Products team is responsible for developing the platform and applications used to introduce new and innovative payment methods to customers. This team helps Amazon ...

lululemon Senior Software Engineer Enterprise Automation Team

Description & Requirements Who we are lululemon is an innovative performance apparel company for yoga, running, training, and other athletic pursuits. Setting the bar in technical fabrics and functional design, we create transformational products and experiences that support people ...

Dynamic Software Engineer in Derivatives Technology Team

Elevate your career as a Software Engineer focused on backend development. Join a vibrant team enhancing derivatives trading and service platforms with innovative technologies like C++ and Java.As part of a skilled team, you'll engage in continuous learning while tackling complex challenges in derivatives te ...

Software Engineer Low Latency, High Throughput Systems

A consulting services company in Montreal is seeking a highly motivated Software Developer to join its team. The role involves designing and optimizing high-throughput infrastructure, troubleshooting complex issues, and requires extensive experience with Java and related technologies. Ideal candidates will posse ...

Staff Software Engineer: Architect AI Platform (Hybrid)

A dental management software company in Metro Vancouver is seeking a Staff Software Engineer to lead technical initiatives and modernise core parts of its platform. The ideal candidate will have over 8 years of software development experience and expertise in designing scalable applications. Responsibilities inc ...

Associate Software Engineer: Tech Growth & Hybrid Work

A leading financial services company in Toronto is seeking a Software Engineer to join a collaborative team. In this role, you'll participate in the software development lifecycle, focusing on design, coding, and quality assurance. Ideal candidates will have a Bachelor's degree or higher and good communication s ...

Cloud Native Senior Software Engineer – Python & Kubernetes

A leading cybersecurity company is seeking a Senior Software Developer in Burnaby, Canada. This role involves designing and maintaining cloud software, contributing to web development, and requires extensive experience in Python and cloud technologies. The ideal candidate will thrive in a collaborative and fast- ...

Senior Software Engineer Real Time Backend & Payments

A tech-driven retail platform company in Toronto seeks a Senior Software Engineer to enhance core systems and improve backend reliability. The role focuses on building and maintaining backend systems, integrating new product features, and collaborating across teams. Ideal candidates have strong experience with N ...

Senior Software Engineer, Backend (AI Agent Runtime)

Cresta is on a mission to turn every customer conversation into a competitive advantage by unlocking the true potential of the contact center. Our platform combines the best of AI and human intelligence to help contact centers discover customer insights and behavioral best practices, automate conversations ...

Software Development Engineer, Amazon Connect Contact Lens

Software Development Engineer, Amazon Connect Contact Lens Want to disrupt an industry by delighting customers? Looking for a job where your work can have direct and massive impact? Excited to join one of the newest and most exciting services? Come join a team that is building a product that will tou ...

Senior Geophysical Java Software Engineer (Seismic/Cloud)

An international energy service company in Calgary is seeking an Experienced Software Developer to build and maintain high-performance applications for geophysical and geological data analysis. You will collaborate with geophysicists and data scientists, implement computational algorithms, and ensure code qualit ...

Junior Software Engineer – Java/Kotlin, AWS + Equity

A leading software company is looking for an Entry Level Software Developer to work in Toronto. This role will focus on developing high-quality software using Java, Kotlin, AWS, and React/Typescript. The ideal candidate should have a passion for software engineering, strong problem-solving skills, and be a self- ...

Intermediate Full Stack Software Engineer (Laravel & Vue)

Our Media Inc. is a Toronto-based digital agency providing businesses with an in-house growth partner to grow digitally through digital marketing, custom software, automation, and AI integration. We are currently searching for a strong developer to help us ship a couple custom software, but this i ...

Edge Device & Real Time Middleware Software Engineer

A leading IT staffing firm is seeking a Software Developer to implement middleware for intelligent devices and assist in system requirements capture. Candidates should have a BS in Computer Science and minimum 2 years of software development experience, with expertise in Java, C++, and multi-threaded systems. Th ...

Software Engineer II, Full Stack (Card Acquisition)

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. The Card Acquisition team is critical in bringing our exciting product vision to life. Like any other financial company, our first imp ...

Senior Software Engineer Build Scalable Impactful Systems

A leading nuclear technology firm in Chalk River, Ontario, seeks an experienced software developer to lead software projects and support facility operations data management. Applicants should possess a Bachelor's degree in Engineering or Science and have at least 7-8 years of experience in developing distributed ...

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    Lead Software Engineer Pythonreact Jobs in Canada Job Search Guide, Trends and Insights