685,598+ Lead Software Engineer Pythonreact Jobs in Canada — Top Companies Hiring June 2026

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Senior Software Engineer — Finance & Merch Data (Hybrid)

A global technology platform in Montreal seeks a Senior Software Developer to design and deliver high-quality software solutions. You will build scalable product services and ensure systems are reliable and maintainable. Candidates must have at least 7 years of software development experience and proficiency in ...

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 ...

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 ...

Go Software Engineer: Container Images & CI/CD

A leading open-source software company is seeking a Software Engineer to build Ubuntu-based container images. This role involves working with CI/CD processes, engaging with the open-source community, and mentoring peers in a remote-first setting. Ideal candidates should have experience in software development, C ...

Security Focused Embedded Software Engineer (TLS/UTM)

A global cybersecurity company is seeking C Developers to enhance their FortiGate firewall features. You will implement and maintain software for the TLS stack while collaborating with a dedicated team. Ideal candidates have 3+ years in C/C++/Golang development and experience in UNIX-like environments. We offer ...

Go Software Engineer: Container Images & CI/CD

A leading open-source software provider is seeking a skilled Software Engineer to build container images and improve automated processes. You will work remotely in a collaborative environment, engaging with the open-source community and mentoring others. The ideal candidate has expertise in Go, CI/CD, and contai ...

Senior Software Engineer — Large Scale Systems & Performance

A leading technology staffing firm is searching for a Software Engineer III to design and scale systems that serve millions globally. The ideal candidate will have 5–7 years of software engineering experience and strong programming skills in languages like Python or Java. Responsibilities include developing high ...

Senior Software Engineer II — Private Markets Platform

A leading technology company in Canada is looking for a Senior Software Engineer II to drive complex technical projects, mentor team members, and collaborate with cross-functional teams. Candidates should have at least 8 years of experience in software engineering with a strong background in Python, Django, and ...

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 Backend Software Engineer AI Platform Leader

Senior Backend Software Engineer Build the backend services and infrastructure that power an AI platform. You will design scalable APIs, distributed systems, and data pipelines that support high throughput AI workloads. What You’ll Do Design and build backend services that ...

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 ...

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 in Financial Technology Development

Become a Senior Software Developer, driving innovation in financial technology solutions. Utilize your expertise to enhance investment systems with high-quality coding practices.As a key member of the team, you will design and implement software solutions that support critical business objectives related to ...

Junior Automation Software Engineer — PLC & Sea Trials

A defense technology company in Montreal is seeking a junior-level Software Engineer to join their Automation Group. The role encompasses participating in all phases of the automation lifecycle, supporting project meetings, and engagement in sea trials. Candidates must have a Bachelor’s degree in engineering and ...

Onsite Automotive Embedded Software Engineer (C++/Linux)

A technology services company in Ontario is seeking an experienced Embedded Software Developer to join the Gateway Vehicle Communication Security Key Management team. The role involves developing embedded software throughout its lifecycle in a fast-paced agile environment, requiring expertise in C++, Linux and c ...

Senior .NET Software Engineer — Full Stack & Cloud

A dynamic technology provider in Toronto is looking for a Software Engineer to contribute innovative development work. You will participate in the full software development lifecycle and collaborate closely with the team on architecture and product functionality. The ideal candidate has at least 5 years of full ...

Junior Software Engineer — Impactful AI Car Platform

A leading AI startup in Toronto is seeking recent graduates in Computer Science or Engineering to join their dynamic team. You will quickly engage in writing production code, contribute to impactful projects, and work with advanced technologies like React and AWS. Ideal candidates should be eager to learn and wo ...

Senior AI Driven Software Engineer (Remote First)

A technology platform for senior living in Toronto is seeking a Senior Software Developer to contribute to enhancing their Drupal-based system while exploring AI-powered features. The ideal candidate has 3-5 years of web development experience, strong skills in PHP and Drupal, and a passion for AI technologies. ...

Staff Software Engineer, Full Stack & Infra Leadership

A tech company located in Central Ontario is seeking a Software Engineer VI (Full Stack) to manage and expand their Engineering team. Candidates should possess a Bachelor's degree and have over 6 years of experience in backend engineering, specifically with Kubernetes and Python. The role emphasizes big-picture ...

Full Stack Software Engineer for Algorithmic Trading

A leading trading firm in Montreal seeks passionate Full Stack Software Developers to develop crucial software for algorithmic trading strategies. In this role, you’ll work with cutting-edge technology while collaborating with experienced developers and project managers. Responsibilities include building scalabl ...

Senior Software Engineer Capital Markets, Trade Lifecycle

A financial services firm based in Toronto is seeking a seasoned software developer to enhance core transaction management systems across equities and derivatives. The ideal candidate will have a strong proficiency in C# and Java, alongside practical experience with C++. Key responsibilities include driving solu ...

Senior Software Engineer II — Post Purchase Experiences

An innovative performance apparel company is seeking a Senior Software Engineer II to lead the design and implementation of complex software systems. In this role, you'll establish technical direction, mentor engineers, and influence broad technical decisions while maintaining high standards across multiple team ...

Java Software Engineer — Spring Boot, Beam & GCP

Responsibilities In depth knowledge of Java concepts including Streams, Threads, and Collections Advanced proficiency in Java programming with experience using Spring Boot Proficiency in setting up Java projects using Maven or Gradle Understanding of BOM (Bill of Ma ...

Senior Software Engineer – Post Purchase Experiences (Hybrid)

A leading performance apparel company in Vancouver is seeking a Senior Software Engineer to design and implement complex software systems. The ideal candidate will have 6-10 years of experience, expertise in React and Node.js, and a strong background in guiding teams towards technical excellence. Emphasizing col ...

Backend Software Engineer, Quantum AI Platform (Equity)

A technology pioneer in Toronto is seeking a Software Developer to enhance the pennylane.ai ecosystem. The ideal candidate will have 3+ years of experience, a strong background in Python, and familiarity with cloud services like AWS. You will collaborate on building and maintaining innovative products while ensu ...

Full Stack Software Engineer I — Toronto (Onsite)

A leading software company in Toronto is seeking a passionate software engineer to contribute across the full stack. You'll tackle architectural decisions, build and optimize REST APIs, and create intuitive user interfaces. Candidates should have a background in Python/Django and React or Flutter, alongside expe ...

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 Software Test Engineer: Automation & Quality Leader

A leading media organization is seeking a Senior Software Engineer in Test to ensure software quality through efficient test automation. The ideal candidate will have 6-9 years of experience with a passion for quality and collaboration. Responsibilities include creating and executing test cases, driving test des ...

Senior Software Engineer: Payment Platform & ERP Integrations

A global leader in software solutions is seeking a Full-Stack Senior Software Engineer to enhance their Payment Solutions suite. This role involves developing and optimizing web applications, ERP integrations, and designing APIs using Java, MySQL, and AWS technologies. Successful candidates will have over five y ...

Senior Software Engineer 4 Day Week & Autonomy

A leading automotive data company in London, Ontario is seeking a Senior Software Engineer to join their dynamic team. This role involves working with TypeScript and Agile methodologies to deliver high-quality software. The company promotes a creative culture, valuing teamwork and individual professional develop ...

Senior Software Engineer Upper Funnel Frontend & Systems

A leading performance apparel company in Metro Vancouver is seeking a Senior Software Engineer to design and implement complex software systems. This role involves leading technical decisions and mentoring engineers while establishing coding standards. The ideal candidate has 6-10 years of experience, a Bachelor ...

Senior SRE Software Engineer: Scale & Reliability Leader

A leading global tech company is seeking a Senior Software Developer for its Site Reliability Engineering team. This role involves optimizing large-scale systems for reliability and performance. Candidates should have a Bachelor's degree in Computer Science or Engineering with 5+ years of software development ex ...

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 Frontend Software Engineer AI Platform Leader

About The Role Design and build user interfaces that make complex AI workflows simple and intuitive. You will create responsive, high performance web applications that help users interact with powerful AI capabilities. Senior Frontend Software Engineer Design and build user inte ...

Test Tools & Automation Full Stack Software Engineer

They gather information about your interactions on the site, such as which pages you visit frequently, how long you stay, and the links or buttons you click. They help us record any difficulties you have with the website and help us to evaluate the effectiveness of our advertising. By analyzing this data, we ca ...

Staff Frontend Software Engineer (Availability Planning & Experiences)

*This will be a remote role to start, with plans to transition to hybrid in-office 2x/week located in downtown Toronto at 134 Peter Street. With millions of diners, 60,000+ restaurant partners and 25+ years of experience, OpenTable, part of Booking Holdings, Inc. (NASDAQ: BKNG), is an industry lead ...

Senior Software Engineer Hybrid, Full Stack & Cloud

A leading technology company is seeking a Senior Software Engineer in London, Ontario. The role involves designing and building full-stack systems, ensuring scalability and maintainability. Candidates should have 5+ years of experience, a strong background in modern technical stacks, and a commitment to high-qua ...

Senior Software Engineer Distributed Storage & DB Infra

A leading tech company in Ontario, Canada, seeks an experienced software engineer to enhance their database access layer and support their global expansion. The role requires over 5 years of cloud infrastructure experience and a relevant Bachelor's degree. You'll work on improving database performance and contri ...

Senior Software Engineer, Global Compliance & Multi Region

A leading industrial software platform in Toronto seeks a Senior Software Developer to drive the technical delivery of compliance-focused multi-region deployments. You will work hands-on with technologies such as TypeScript, React Native, and AWS, ensuring that solutions are reliable and meet strict compliance s ...

Embedded Software Engineer – Hybrid, Real Time Systems

Une entreprise technologique recherche un Développeur de logiciel embarqué avec plus de 3 ans d'expérience pour concevoir et améliorer des solutions technologiques agricoles. Vous travaillerez au sein d'une équipe dynamique, en utilisant des pratiques Agile et CI/CD. Le candidat idéal doit avoir des compétences ...

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 ...

Senior Software Engineer — Growth, UX & API Systems

A leading global news organization is looking for a Senior Software Engineer in Ottawa to enhance user experiences across digital platforms. This engineer will design and maintain software systems, optimize performance, and collaborate closely with designers and product partners. Candidates should have at least ...

Software Development Engineer II, WW Prime Tech

Overview Software Development Engineer II, WW Prime Tech: If you want to work on one of Amazon's most well-recognized and impactful brand programs and you are passionate about writing code that impacts millions of people every day, then the Amazon Prime Team wants to hear from you. Have you ever w ...

Software Engineer Build Scalable Web & Mobile Apps

A dynamic technology company in Guelph is seeking a Software Engineer to join its expanding technology team. This role focuses on designing, developing, and maintaining scalable web and mobile applications that enhance operations and support growth. The ideal candidate will have a Bachelor's or Master's in Compu ...

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 Engineer II FinTech Innovation at Scale

A leading global e-commerce company based in Vancouver is seeking an experienced software developer. The role involves collaborating with teams to design innovative fintech products, programming in a distributed environment, and applying software development best practices. Candidates should have extensive softw ...

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