680,294+ Lead Software Engineer Pythonreact Jobs in Canada — Top Companies Hiring June 2026

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Ceph Software Engineer Optimizing Large Scale Storage Solutions

Join as a Ceph Software Engineer, specializing in optimizing large-scale storage environments. Collaborate effectively within agile teams to drive cutting-edge solutions in cloud computing.You will play a vital role in enhancing the cloud infrastructure through your Ceph expertise. Mentoring team membe ...

Senior Software Engineer – AI Startup, On site Toronto

A leading tech recruitment agency is seeking a Senior Software Engineer for a top-tier AI startup in Toronto. This role, requiring on-site presence, involves collaborating to design and enhance user experiences while taking ownership of system features. Candidates should have a Bachelor's degree and 4–10 years o ...

Staff Software Engineer: AI Powered Data Platform Architect

A leading market intelligence firm in Canada is seeking an experienced individual to own the architecture of a large-scale data extraction platform. The role involves designing high-reliability systems and mentoring engineers. Candidates should possess over 10 years of experience in building large-scale producti ...

Innovative Software Engineer in Test Focused on Automation

Unlock your potential as an Innovative Software Engineer in Test specialized in automation using Java/Python. This hybrid role is designed for those who excel in creating quality frameworks and testing solutions.In this position, you'll leverage 8-10 years of QE/SDET experience to design, develop, and ...

Senior Software Engineer Driving Data Solutions On Site

Become a key Senior Software Engineer, spearheading development efforts on-site. This role focuses on integrating client needs with innovative data solutions and full-stack applications.Reporting to the Development Strategist, you’ll utilize your 5–8 years of expertise in a collaborative team environme ...

Engaging Software Engineer Intern Role for Future Innovators

Launch your career with a Software Engineer Intern position, where you'll build impactful applications and features. Be part of a collaborative team that drives innovation through technology.As an intern, you will focus on developing and designing crucial products, working closely with various stakehol ...

Experienced Software Engineer With Full Stack Development Expertise

Drive innovation as a Software Engineer with a focus on .NET technologies. Experience a collaborative environment where your creativity enhances product development and architecture strategies.This position requires a strong background in full-stack application development, particularly utilizing .NET ...

Senior Software Engineer for Scalable Dental Management Systems

Take on a pivotal role as a Senior Software Engineer dedicated to advancing dental management software. Collaborate in a hybrid setting to drive technical strategies and elevate system performance.With over 8 years of experience, you will empower your teams by leading hands-on development and architect ...

Contract Software Engineer Enhancing AI Performance and Reliability

Join a pioneering team as a Software Engineer dedicated to advancing AI capabilities. Your role will focus on enhancing code efficiency and driving quality through innovative solutions in a remote setup.You’ll be tasked with evaluating AI-generated code, collaborating with various teams to establish be ...

Contract Software Engineer Specializing in Advanced AI Techniques

Embrace an exciting challenge as a Software Engineer specializing in AI. Collaborate with teams in a remote setting to elevate AI code quality and efficiency.You will be responsible for applying your extensive software engineering knowledge, comprising over five years of experience, to refine AI-genera ...

Software QA Engineer – 3D/CAD Platforms (Automation Focus)

Job Title:Software QA Engineer – 3D/CAD Platforms (Automation Focus)Location:Remote, Toronto, Ontario, CanadaExperience:3 to 5 YearsRate:55 to 60 CAD per hourRole Summary NearSource is looking for a Software QA Engineer to drive qual ...

Dynamic Software Engineer Driving Innovation in Event Tech

Unlock your potential as a Software Engineer, playing an essential role in crafting cutting-edge event technology solutions. Join a team where your creativity sets new standards in functionality and user experience.This full-time position offers the chance to contribute across the full stack, making cr ...

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 Remote/Hybrid, AI Enabled Impact

A leading software development company is seeking an experienced senior software developer to join their innovative team in Kitchener. The role offers remote and hybrid work options, focusing on building high-quality, scalable software solutions. The ideal candidate has over 6 years of experience, a passion for ...

Principal Software Engineer in Cutting Edge Security Engineering

Transform digital protection as a Principal Software Engineer dedicated to security engineering. Join a remote-first role focused on backend services and critical integrations for advanced detection workflows.This Principal-level position emphasizes ownership of backend services from architecture to im ...

Senior Full Stack Software Engineer AI Platform Leader

Senior Full Stack Software Engineer About The Role Own the delivery of end to end product features for an AI platform. You will work across frontend, backend, and data systems to build scalable user facing experiences.What You’ll DoBuild frontend interfaces using modern frameworks such as Rea ...

Senior Software Engineer, Security for AI Platform (Remote)

A leading AI company in Toronto is seeking a Senior Software Engineer with a focus on security. This role involves building security features for an AI workspace platform, developing autonomous agents, and performing application testing. Applicants should have over 5 years of experience in software engineering, ...

Sr Software Development Engineer (Full Stack) Evisort AI

Your work days are brighter here.We’re obsessed with making hard work pay off, for our people, our customers, and the world around us. As a Fortune 500 company and a leading AI platform for managing people, money, and agents, we’re shaping the future of work so teams can reach their potential and focus ...

Remote Senior Software Engineer, Product (React/Go & LLMs)

A leading tech company is hiring a Senior Software Engineer to join their product team. This primarily remote role involves designing and building impactful LLM applications using React and Go. Candidates should have 5+ years of software engineering experience, with a strong background in building production-rea ...

Outbound Flow Software Engineer Real Time Warehouse Tech

A leading e-commerce company is seeking a Software Engineer in Toronto, Ontario, to develop and optimise mission-critical software systems. The role requires over 3 years of software development experience and a deep understanding of design patterns and system reliability. You will work closely with users to ide ...

Software Engineer, ML Infra & Distributed Systems (Staff & Principal)

About The Role As a Staff Software Engineer on the ML Infrastructure team, you will collaborate closely with the Machine Learning and Product teams to build world‑class machine learning inference platforms. These platforms power essential services like personalized recommendations, search, and content understand ...

Senior Roblox Software Engineer — Live Games & Scale (Remote)

A leading gaming company is seeking a Software Engineer to contribute to Roblox games. This role involves writing clean Roblox Lua code, collaborating with teams to enhance player experiences, and optimizing live game systems. Candidates should have 2+ years of Roblox development experience and a strong foundati ...

Senior Java Software Engineer for Capital Markets Technology

Elevate your career as a Senior Software Engineer focused on Java within Capital Markets. Help maintain and upgrade critical software components while collaborating with cross-functional teams in a hybrid work model.This role involves taking ownership of software components nearing end-of-life, requiri ...

Senior Software Engineer for Scalable Global Communication Systems

Elevate global communications as a Senior Software Engineer. Focus on designing scalable features such as call routing and fraud detection for a fast, reliable platform.In this senior role, you will engineer the backbone of communication services while ensuring optimal performance and reliability. Key ...

Senior Staff Software Engineer for Complex Fintech Architecture

Be a pivotal part of our team as a Staff Software Engineer. Drive the architectural vision for our cross-border banking platform while mentoring engineers and ensuring system integrity.This position requires a hands-on leader with over 8 years in software engineering, capable of shaping technical direc ...

Software Engineer, RMS Systems – Onsite (4 Days/Week)

A leading performance apparel company seeks a Software Engineer to design and implement solutions that manage Inventory, Pricing, and Sales platforms globally. The role involves writing high-quality code, leading design discussions, and mentoring junior engineers. Ideal candidates will have a Bachelor's degree i ...

Innovative Senior Software Engineer for AI Driven Solutions

Lead the development of cutting-edge AI automation tools as a Senior Software Engineer. This role focuses on enhancing team operations through intelligent workflow solutions in a fully remote setting.In this position, you will be responsible for designing and implementing AI-integrated systems that imp ...

Remote Senior Software Engineer, AI Powered Legal Tools

A leading AI suite for legal professionals is seeking a Software Engineer to work in a remote setting. The candidate will design and implement features using the latest technology and collaborate with product management. Ideal for someone with 5+ years of experience in software development and excellent communic ...

Android Mobile Software Engineer | $200/hr Remote | Mercor

Android Mobile Software Engineer | $200/hr Remote | Mercor Base pay range $200.00/hr - $200.00/hrOrganization:MercorPosition:Android Mobile Software Engineer (Kotlin)Referral Partner:Crossing HurdlesType:Hourly ContractLoca ...

Senior Software Engineer: Public Safety CAD & 911 Systems

A leading technology service provider is looking for a Senior Software Developer with expertise in C# and SQL to support public safety applications in Ontario. The role involves code enhancements, testing, and documentation for critical dispatch technologies. A minimum of 8 years of experience is required, parti ...

Sr Software Development Engineer (Full Stack) Evisort AI

**Your work days are brighter here.**We’re obsessed with making hard work pay off, for our people, our customers, and the world around us. As a Fortune 500 company and a leading AI platform for managing people, money, and agents, we’re shaping the future of work so teams can reach their potential and focus on wh ...

Senior Full Stack Software Engineer — Java/Angular | Hybrid

A leading tech company is seeking a Senior Software Developer in Toronto, Ontario, to design and implement data pipelines and translate technical specifications into applications. The ideal candidate has over 15 years of experience in programming with strong skills in Java, J2EE, and database interactions. This ...

Software Engineer, R&D Applications 2026 New Grads

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 dat ...

Senior Software Engineer — Fintech, End to End, Equity

A fintech startup in Toronto seeks a software engineer to design and build innovative banking products. This in-person role offers competitive salary, meaningful equity, and a chance to join a founding team. Ideal candidates have 4+ years of experience and a strong product sense. Located in downtown Toronto, thi ...

Senior .NET Software Engineer: Scale with SQL & React

A leading technology firm in Toronto is looking for a Mid-Senior level .NET Developer to join their team. The role involves designing and developing .NET applications, optimizing SQL databases, and creating front-end components using React. Candidates should have over 5 years of experience in software developmen ...

Software Engineer Python Ubuntu Pro client graduate level

Join to apply for theSoftware Engineer - Python - Ubuntu Pro client - graduate levelrole atCanonical 1 day ago Be among the first 25 applicants Join to apply for theSoftware Engineer - Python - Ubuntu Pro client - graduate levelrole atCanonical Get AI-p ...

Senior Software Engineer Driving Innovation in Financial Technology

Advance your career as a Senior Software Engineer focused on innovative solutions in financial technology. Engage with Spring Boot and Docker while solving complex problems in a supportive team.In this role, you will tackle production issues and suggest application enhancements while translating techno ...

Senior Software Engineer – TS/Node.js, Global Scale & Impact

A leading technology firm in Canada seeks a mid-senior level Tech Talent Specialist to drive the development of tools aimed at reducing the carbon footprint of digital ads. Ideal candidates will be proficient in TypeScript and Node.js, with a strong understanding of CI/CD processes and cloud infrastructure. This ...

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 / Intermediate Software Engineer (Unreal Engine 5 Rendering)

Overview Blackbird Interactive is a creative-fueled, future-driven, independent game studio where the best talent in the industry can find long-term careers to help grow their abilities while working on a wide range of projects, which encompass world-class IPs as well as our own creations across multiple genres. ...

Senior Software Engineer Rust/TypeScript Platform & Open Source

A leading data platform company in Canada is seeking a Senior Engineer to build and maintain their Boréal hosting platform and Moose open-source project. This role offers the chance to collaborate closely with product and design teams in a flexible, remote-first environment. Ideal candidates have robust experien ...

Immigration Software Engineer: Swift & SwiftUI | EB 1A Recipient

Adresse :Toronto Date de début de la mission : Durée de la mission :90 jours Date de publication de l'offre : Description de l'offre : Objectif de la mission : Aider les immigrants hautement qualifiés (O-1A & EB-1A) en tant qu'ingénieur logiciel en chef dans l'équipe. Sp ...

Software Engineer Python Ubuntu Pro client graduate level

Join to apply for theSoftware Engineer - Python - Ubuntu Pro client - graduate levelrole atCanonical Canonical is a leading provider of open source software and operating systems to the global enterprise and technology markets. Our platform, Ubuntu, is very widely used in breakthrou ...

Senior Software Engineer: Big Data Spark & Java (Canada)

A leading engineering consultancy in Canada is looking for a Senior Software Engineer specialized in Java and Spark. In this role, you will work on a large social media platform processing petabytes of data. The position involves optimizing data systems, designing solutions, and collaborating with cross-function ...

Senior Python Test Software Engineer for Satellite Payloads

A global aerospace company located in Quebec is seeking a Test Software Developer. The ideal candidate will develop test software using Python for satellite payloads and must have at least 5 years of development experience. This temporary role requires good communication skills in both English and French and off ...

Remote Software Engineer — Train & Evaluate AI Chatbot Code

An innovative company is seeking a skilled Software Engineer to help train AI chatbots. This exciting remote role allows you to work on your own schedule while contributing to the development of cutting-edge AI technology. You'll be responsible for creating diverse coding challenges, writing high-quality code sn ...

Senior Software Engineer AI/NLP Platform, Stock Options

A forward-thinking technology company is seeking a highly skilled Senior Software Developer to drive software solutions. The role involves collaborating with cross-functional teams, designing and developing applications, and mentoring junior developers. Ideal candidates will have over 5 years of experience and p ...

Innovative Senior Software Engineer in Financial Services Transformation

Join a revolutionary movement in financial technology as a Senior Software Engineer. Utilize your skills to drive the architecture and implementation of innovative, scalable solutions.In this dynamic role, you'll take charge of critical technical initiatives that define the future of our platform. You' ...

Staff Software Engineer – Remote Cloud Platform & AI Workspace

A leading digital work platform provider is seeking a Staff Engineer to drive the design and development of core architecture components. This role requires over 7 years of software engineering experience, proficiency in Java and cloud technologies, and a strong leadership skill set. The position offers a compet ...

Skilled Senior Software Engineer for Feature Store Development

Drive advanced feature store initiatives as a Senior Principal Software Engineer. Oversee technical direction while collaborating with enterprise clients to ensure top-tier performance and reliability.As a senior leader, you will be responsible for the architectural choices of a key product that suppor ...

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