211,458+ Lead Software Engineer Pythonreact Jobs in Toronto, Canada — Local Employers Hiring June 2026

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Distributed Systems Software Engineer, Python / Go

Distributed Systems Software Engineer, Python / Go Join to apply for the Distributed Systems Software Engineer, Python / Go role at Canonical Distributed Systems Software Engineer, Python / Go 3 months ago Be among the first 25 applicants Joi ...

Software Engineer, Infrastructure/Developer Tooling (Hybrid)

Hi, Future Homie! At Homebase, you’ll join a team that’s bold, fast-moving, and obsessed with helping small businesses thrive. We build with empathy, act with urgency, and take big swings that drive real-world impact. Here, every Homie shows up to raise the bar, support one another, and celebrate ...

Detection Focused Software Engineer at Doppel

Transform the landscape of cybersecurity at Doppel as a Detection-Focused Software Engineer. Design and implement advanced backend systems to combat increasing social engineering threats.Doppel, located in Toronto, is on the lookout for talented engineers to strengthen its AI-driven social engineering defens ...

Expert Software Engineer Role at ZS

Drive software innovation at ZS as an Expert Software Engineer. Bring 10-15 years of production experience to lead development and AI-enhanced deliveries.In this pivotal role, you'll oversee complete project lifecycles from architecture to deployment. Your extensive full-stack knowledge will be crucial in bu ...

Software Engineer (Capital Markets & Reference Data)

Requisition ID: Join a purpose driven winning team, committed to results, in an inclusive and high-performing culture. The Team The Centralized Market Data team is accountable for providing financial market data (e.g. Equities, Fixed Income) to trading and risk management solutions ...

Expert Systems Software Engineer at NVIDIA

Become a key player at NVIDIA as a Senior Systems Software Engineer. Work on innovative solutions that transform complex computing challenges into efficient software systems.In this pivotal role, you will focus on developing and evolving libraries, drivers, and runtime interfaces that form the backbone of hi ...

Sanofi Staff Software Engineer in AI

Become a Staff Software Engineer focusing on AI at Sanofi in Toronto, ON. Shape the future of drug discovery through AI-driven insights and solutions.In this pivotal role, you will be a key player in developing enterprise-level AI products tailored for research and development uses. You'll set technical stra ...

Dev Tools Software Engineer at Homebase

Empower engineers at Homebase as a Dev Tools Software Engineer specializing in Infrastructure. Build tools that streamline processes and elevate the overall developer experience.Join the platform infrastructure team, focusing on creating internal tooling and automation that drives software delivery. You'll p ...

Software Engineer I Production Systems & Support

Une banque de premier plan à Toronto recherche un professionnel en technologie de l'information pour un rôle de Customer. Le candidat idéal doit posséder des compétences en gestion des incidents et en communication efficace. Les responsabilités incluent la résolution d'incidents, la collaboration avec les partie ...

Software Engineer Intern (Fall / Winter 2026)

Who are we? Our mission is to scale intelligence to serve humanity. We’re training and deploying frontier models for developers and enterprises who are building AI systems to power magical experiences like content generation, semantic search, RAG, and agents. We believe that our work is instrumen ...

Software Engineer, Infrastructure/Developer Tooling (Hybrid)

Hi, Future Homie! At Homebase, you’ll join a team that’s bold, fast-moving, and obsessed with helping small businesses thrive. We build with empathy, act with urgency, and take big swings that drive real-world impact. Here, every Homie shows up to raise the bar, support one another, and celebrate ...

Junior Software Engineer at Serco Canada

Launch your career as a Junior Software Engineer with Serco Canada Inc. in Toronto, Ontario. Gain hands-on experience in Java and application enhancements for DriveTest Centres across Ontario.As a member of a dynamic team, you'll focus on the ongoing support and improvement of web-based applications while en ...

Staff Software Engineer at Carta Toronto

Elevate your engineering career as a Staff Software Engineer at Carta in Toronto, Ontario. Using your expertise in distributed systems, you’ll tackle complex challenges for lasting technical health.In this pivotal role, you'll influence Carta’s engineering standards and strategic decision-making. With over 1 ...

eBay Backend Software Engineer MTS 2

Transform eBay's search systems as a Member of Technical Staff 2 in Backend Engineering. Leverage your strong Java and Spring Boot skills to enhance search experiences globally.Join eBay's Search Backend team, driving technical execution that directly impacts customer satisfaction and seller success. This po ...

Staff Software Engineer Digital Experience Platform

Staff Software Engineer – Digital Experience Platform (DXP) About Us Nu is one of the largest digital financial platforms in the world, with more than 127 million customers across Brazil, Mexico, and Colombia. Guided by our mission to fight complexity and empower people, we are redefini ...

Data Analytics Software Engineer A.U.G. Signals

Embark on a career with A.U.G. Signals as a Software Development Engineer in Toronto, where you will develop next-gen data analytics software utilizing sensor data technologies. The role invites candidates who thrive on technology and software innovation.This permanent position requires a Bachelor’s degree i ...

Entry Level Software Engineer at Beanfield

Join Beanfield as an Entry-Level Software Engineer and harness your skills in Python and Java to craft innovative backend systems. Collaborate with a creative team in our vibrant offices.As a Software Engineer I, you will be integral to our tech team focused on backend development and API integration. You'll ...

Software Engineer, Full Stack Applications (Toronto)

Software Engineer, Full-Stack Applications – Ratings Technology Location: Toronto Fitch Ratings is seeking a Software Engineer to join our global Ratings Technology team in Toronto. You'll build and maintain mission‑critical full‑stack applications that power how a world‑leading credit ra ...

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 AI Driven Search

Lead innovative search solutions as a Senior Software Engineer focusing on AI-driven platforms. Your role will combine software engineering expertise with a commitment to quality delivery and user experience.In this engineering position, you will focus on creating and maintaining the search infrastructure th ...

Senior Software Development Engineer, Agentic AI

About the Team Agent Factory is where Workday’s next chapter gets built. We’re forming small, senior, cross‑functional AI teams that bring together product leaders, machine learning engineers, and full‑stack builders to create intelligent agents used by millions of people every day. This work is p ...

Senior Software Engineer, Fullstack (Consumer Engineering)

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. Consumer Growth Experience Engineering (CGX) builds the platforms and end‑to‑end experiences that power affirm’s consumer grow ...

Senior Software Engineer, Fullstack (Consumer Engineering)

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. Consumer Growth Experience Engineering (CGX) builds the platforms and end‑to‑end experiences that power affirm’s consumer grow ...

MTS 2, Staff Backend Software Engineer

We are seeking a dynamic and collaborative Staff Engineer to architect new experiences and evolve the distributed systems that power eBay at an unmatched scale. In this role, you will design and implement core software and cloud-based tools that keep us at the forefront of the industry. You will build scal ...

Principal Engineer, Software Supply Chain Security

GitLab is an open-core software company that develops the most comprehensive AI-powered DevSecOps Platform, used by more than 100,000 organizations. Our mission is to enable everyone to contribute to and co‑create the software that powers our world. When everyone can contribute, consumers become contributo ...

Senior Applied AI Software Engineer Remote

Take the lead in AI innovation with Photonic as a Senior Applied AI Software Engineer. Work remotely in Canada to apply your AI expertise in the ambitious realm of quantum engineering.In this key role at Photonic, you will identify and deploy high-impact AI, Machine Learning, and Deep Learning applications a ...

Senior Software Engineer at Scribd, Inc.

Transform the future of content with Scribd, Inc. as a Senior Software Engineer. Leverage your Python skills to build high-performance distributed systems in a dynamic work setting.This pivotal role requires extensive experience in event-driven architecture and focuses on optimizing large-scale data services ...

MTS 2, Software Engineer, Backend (Toronto)

About the Team and the Role The Search Backend team that builds and operates the core services powering eBay Search at scale. We build reliable high-performance backend systems that retrieve, rank and serve relevant results for a large global audience of buyers. These systems help users quickly fi ...

Senior Staff Software Engineer at Marqeta

Shape the future of data engineering at Marqeta as a Senior Staff Software Engineer for the Data Platform. This remote role focuses on building foundational infrastructure for data-driven solutions.As a pivotal member of the software engineering team, you'll oversee the design and implementation of our advan ...

Senior Staff Software Engineer at Marqeta

Shape the future of data engineering at Marqeta as a Senior Staff Software Engineer for the Data Platform. This remote role focuses on building foundational infrastructure for data-driven solutions.As a pivotal member of the software engineering team, you'll oversee the design and implementation of our advan ...

Senior Software Development Engineer AWS Marketplace

This position is part of the AWS Specialist and Partner Organization (ASP). Specialists own the end-to-end go-to-market strategy for their respective technology domains, providing the business and technical expertise to help our customers succeed. Partner teams own the strategy, recruiting, development, an ...

Principal Software Engineer Fintech Global Leader

Principal Software Engineer – Global Fintech We are seeking an accomplished Principal Software Engineer to 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, t ...

Senior Software Engineer II, Machine Learning

Sr. Software Engineer II, Machine Learning Narvar is growing! We are hiring a Senior Software Engineer II to build new products and improve all aspects of the Narvar platform. Data is at the core of our competitive advantage so the work you do has a large impact across the company, our bus ...

Senior / Staff Software Engineer (Web Tools)

Waabi is an AI company building the next generation of self-driving technology. We have offices in Toronto and San Francisco and are looking for diverse, innovative and collaborative candidates who want to impact the world positively. Responsibilities Lead technical and architec ...

Senior Staff Software Engineer at Samsara

Transform the global economy with Samsara as a Senior Staff Software Engineer. Your expertise in software design and AI will enhance operations across industries while fostering sustainability.As a Senior Staff Software Engineer at Samsara, you’ll spearhead projects that improve physical operations for indus ...

Senior Software Engineer Full Stack .NET

Who We Are Bankjoy is a Y Combinator and Bessemer Venture Partner backed FinTech startup. We are changing the way community banks and credit unions do business, enabling them to become tech‑driven and digital first. Bankjoy provides modern digital banking products including mobile banking, online ...

Staff/Senior Software Engineer, Programmatic Bidding

About the Team StackAdapt is the leading technology company that empowers marketers to reach, engage, and convert audiences with precision. With 465 billion automated optimizations per second, the AI‑powered StackAdapt Marketing Platform seamlessly connects brand and performance marketing to driv ...

Senior Software Engineer, Fullstack (Consumer Engineering)

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. Consumer Growth Experience Engineering (CGX) builds the platforms and end‑to‑end experiences that power affirm’s consumer grow ...

Senior Software Engineer — Build Scalable Systems

A public sector service provider is seeking a Senior Software Developer to focus on Java-based web application development, RESTful APIs, and microservices. This role, performing both design and implementation tasks, requires a strong background in large-scale, multi-client applications within an agile environme ...

Senior Software Engineer, Fullstack (Consumer Engineering)

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. Consumer Growth Experience Engineering (CGX) builds the platforms and end‑to‑end experiences that power affirm’s consumer grow ...

Principal Software Engineer, Core Platform (Remote)

A leading payment processing company is seeking a Principal Software Engineer to own the technical roadmap for the core platform. You will drive high-impact projects across the domain, optimize processing engines, and mentor technical leads. The ideal candidate has over 12 years of software engineering experienc ...

Staff Software Engineer — Internal Platform & Architecture

A leading data streaming technology company in Canada seeks a Staff Software Engineer to design and implement internal web applications. The ideal candidate will have over 12 years of experience, strong full stack development skills, and a technical architecture background. You will collaborate with cross-functi ...

Senior Software Engineer, Fullstack (Consumer Engineering)

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. Consumer Growth Experience Engineering (CGX) builds the platforms and end‑to‑end experiences that power affirm’s consumer grow ...

E commerce AI Software Development Engineer

Join as a Software Development Engineer focused on AI for e-commerce. Collaborate with seasoned engineers and product managers to drive innovation and create impactful solutions.This hands-on role encourages you to grow technical expertise and work closely with a dynamic team. You'll help design and implemen ...

Expert Software Engineer in Architecture Design

Lead innovative projects as an Expert Software Engineer specializing in Customer Communications Management. Focus on designing robust architectures and enhancing solutions using cutting-edge technologies.In this impactful role, you will coordinate with various stakeholders to understand business objectives, ...

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 ...

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 Do Build web applications using React, TypeScript, or similar technologies. Integ ...

Distributed Systems Software Engineer, Python / Go

Distributed Systems Software Engineer, Python / Go Join to apply for the Distributed Systems Software Engineer, Python / Go role at Canonical Distributed Systems Software Engineer, Python / Go 3 months ago Be among the first 25 applicants Joi ...

Staff Software Engineer Toronto, Ontario, Canada

Beacon Software is a permanent capital holding company which acquires and grows essential businesses. We are a profitable series B+ firm that combines great technologists, operators and M&A professionals to accelerate the scale of the ambition of the dozens of businesses we own and operate. We are supporte ...

Principal Software Engineer, AI (Web & Data)

Requirements Experience: 8–10 years in software engineering, specializing in SaaS platform architecture and distributed systems design Leadership & Advocacy: Excellence in technical diplomacy and stakeholder influence. Proven ability to translate complex AI/Data roadmaps into busines ...

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