163,051+ Lead Software Engineer Pythonreact Jobs in Toronto, Canada — Local Employers Hiring June 2026

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Remote Applications Engineer – Systems & Optimization

A global water solutions company is seeking an Applications Engineer to enhance system performance and reliability. This hands-on role involves leading technical activities, optimizing system operations using FlexNet tools, and collaborating with cross-functional teams. The ideal candidate will have a Bachelor’s ...

Remote Python Systems Engineer for AI Collaboration (Contract)

A tech company specializing in AI is seeking a Software Engineer to join their remote team. The role requires developing and maintaining complex Python systems, designing modular codebases, and optimizing performance. Candidates should have experience in top U.S. tech firms and a strong grasp of Python fundament ...

Senior Fullstack Engineer — Backend‑First, Cloud (GCP)

A major retail analytics software company in Toronto seeks a highly motivated Senior Fullstack Engineer focusing on backend development. This hybrid role is crucial in shaping the technical direction for our platform, delivering well-tested code, and collaborating effectively with team members. Candidates should ...

Full Stack Engineer — Build AI Driven Legal Workflows

A legal technology firm in Toronto is seeking a Full Stack Engineer to design and develop a modern legal tech platform. The role involves optimizing user interfaces, managing backend services with Go, and deploying applications on Google Cloud. Candidates should have 5+ years in software development, strong back ...

Rugged Mechanical Design Engineer, Construction IoT

A construction IoT company in Toronto is seeking a Mechanical Design Engineer with over 5 years of experience in end-to-end mechanical design for robust, compact devices. The ideal candidate is proficient in CAD software and has hands-on problem-solving skills. You will work collaboratively with cross-functional ...

Remote Senior Full Stack Engineer, Crypto & Alt Trading

A fintech leader in Toronto seeks a Principal Full Stack Engineer specializing in crypto and alternative trading products. This pivotal role involves architecting secure, scalable applications and driving the expansion of crypto infrastructure. Ideal candidates have over 8 years in software development and exper ...

Senior Data Platform Architect — Hybrid/Remote

A global e-commerce leader is seeking a Senior MTS Software Engineer to drive architectural vision for the Core Data platform. This role involves independent leadership of complex data initiatives, ensuring scalable and maintainable systems, and fostering a vibrant, inclusive engineering culture. Candidates shou ...

Senior Backend Engineer, New Products — Hybrid Role

A leading technology company in Toronto is seeking a Software Engineer to help build and launch new products that impact personal injury workflows. You’ll work with a collaborative team, using technologies like Python and React, to deliver solutions that improve lives. Ideal candidates have 5-10+ years in engine ...

Backend Engineer (Python/PL SQL) – Capital Markets

A leading financial institution in Toronto seeks a Software Engineer to enhance capital markets products and analytics platforms. The role focuses on backend development with a strong emphasis on Python and PL/SQL, involving collaboration with business teams and cross-functional leaders. Candidates should have 4 ...

Platform Engineer: Scale End to End Systems (Remote)

A dynamic tech startup in Toronto is looking for a Software Engineer, Platform to join their growing team. This role focuses on building complex end-to-end systems and participating in product decisions. The ideal candidate will have solid experience in both backend and frontend development, particularly with No ...

Remote Python Engineer – Backend APIs (Entry Level)

A dynamic tech company is seeking an Entry-Level Python Engineer to join their growing engineering team in Toronto. Ideal for recent graduates, you will develop scalable applications, backend services, and APIs in a collaborative, fast-paced setting. The role includes writing clean Python code, participating in ...

Senior Frontend Engineer, Cases Product – Hybrid SF

A technology-driven legal firm in Toronto is seeking a Backend Software Engineer to enhance their integration engine and improve user experiences. The role involves full project ownership, collaboration with engineers, and documentation of technical requirements. The ideal candidate has over 5 years of experienc ...

Senior Underground Mining Estimator & Project Lead

A leading mining contractor is seeking a Senior Mining Engineer & Project Estimator based in Canada. The successful candidate will be responsible for preparing detailed cost estimates for various underground mining projects, ensuring competitive tender submissions that align with company goals. This role demands ...

Forward Deployed AI Solutions Engineer

A leading digital commerce platform provider based in Toronto is seeking a Forward Deployed Engineer to partner with product managers and customers to prototype AI-driven solutions. This role involves hands-on development, customer interaction, and collaboration with global teams. Qualified candidates should hav ...

Global Payments Tech Engineer React/Node, Cloud & CI/CD

A leading financial institution in Toronto is seeking a Software Engineer to contribute to Global Payments Technology. The candidate will develop scalable applications using technologies like ReactJS and NodeJS, ensuring robust solutions within a diverse and inclusive culture. Responsibilities include building f ...

Senior Full Stack Engineer, Trust & Safety – Remote

A leading financial technology company is seeking a Full Stack Engineer to enhance customer journeys during authentication and verification. This role involves owning quarterly goals, collaborating with various stakeholders, and implementing high-availability systems. The ideal candidate will have 4+ years of ex ...

Senior Front End Engineer — React UI for Cloud Apps

A pioneering life sciences technology firm is seeking a Front-End Software Engineer to join their dynamic team in Toronto, Canada. The role involves building and maintaining the UI of cloud-based applications using modern frameworks like React. Candidates should possess over 5 years of UI development experience ...

Senior Full Stack Engineer Remote Healthcare Infra & AI

A healthcare technology company is looking for a Senior Full Stack Engineer based in Toronto. This position will initially start as remote, transitioning to a hybrid model once the Toronto office opens. Responsibilities include architecting technical integrations and designing data pipelines to enhance healthcar ...

Senior Fullstack Engineer for AI Agent Systems

A leading AI company based in Toronto is seeking a fullstack engineer to design and develop systems for autonomous digital workers. In this role, you'll collaborate across teams to enhance user experience while applying your skills in Typescript, React, NextJS, and NodeJS. Candidates should have over three years ...

Roadway Lighting Electrical Engineer (CADD & Design)

A leading engineering consultancy firm in Toronto is seeking an experienced Electrical Engineer with a degree and CADD software proficiency. The role involves supporting management in contract developments, making revisions to designs, and collaborating with diverse teams on infrastructure projects. The ideal ca ...

DevOps Engineer IaC, CI/CD & Automation in Toronto

A leading transportation solutions provider in Toronto is seeking a full-time DevOps Engineer to modernize and automate infrastructure. The role involves contributing to Infrastructure as Code using tools like Terraform and Ansible, maintaining CI/CD pipelines, and collaborating across engineering and IT teams. ...

Senior Research Engineer, AI for AEC Innovation

A leading software company in Toronto seeks a Senior or Principal Research Engineer to enhance AEC solutions with AI technology. Responsibilities include developing scalable data pipelines, mentoring engineers, and collaborating with cross-functional teams. Candidates should have a PhD or MSc, 7-10 years of expe ...

Real Time Live Commerce Platform Engineer

A leading global e-commerce platform in Toronto is seeking a Software Engineer to develop a real-time commerce platform. You will work on backend services for interactive online shopping, focusing on performance and scalability. Ideal candidates have a Bachelor’s degree in Computer Science or related field, prof ...

Staff Full Stack Engineer – AI‑Driven Platforms

A leading global information service provider is seeking a Staff Software Engineer (Full Stack) to build AI-driven applications. The candidate should have 8+ years of full-stack experience, expertise in modern tech stacks, and the ability to collaborate with multi-disciplinary teams. This hybrid role offers a fl ...

Senior Full Stack Engineer — Cloud, Java & React (Toronto)

A leading financial institution in Toronto is seeking a Full Stack Software Engineer Specialist to enhance their web and cloud application capabilities. The successful candidate will champion a customer-focused culture while delivering code development and providing operational support. A strong foundation in we ...

Senior AI Backend Engineer: Scalable, High Performance APIs

A leading technology firm in Toronto is seeking a Senior Software Engineer to design and optimize backend systems for AI-powered platforms. In this role, you will architect high-performance services, manage large-scale data flows, and collaborate with cross-functional teams to implement AI capabilities. Candidat ...

SDET II: CI/CD Automation & Test Frameworks

A technology company is looking for a highly skilled Software Engineer specializing in Continuous Integration and Test Frameworks. Responsibilities include optimizing CI pipelines, designing automation frameworks, and providing support to teams. The ideal candidate has 4+ years of experience in CI/CD, strong com ...

Frontend Engineer, New Products — Hybrid (SF)

A leading technology company in Toronto is seeking a Software Engineer to join their New Products team. The role involves building and launching innovative products that enhance workflows for personal injury lawyers and their clients. With 5-10+ years in backend or frontend engineering, candidates should possess ...

Senior Mainframe Developer | Cobol, JCL & DB2 Expert

A leading financial institution in Toronto is seeking a Software Engineer to contribute to the Pricing and Rates applications. The successful candidate will have 5-8 years of experience in systems analysis and development, with strong skills in Cobol and agile methodologies. This role involves coding, debugging, ...

Full Stack Engineer for Partner Integrations & Ecosystem

A fintech company is seeking a Full-Stack Engineer to join their Partner Products team in Toronto, Ontario. The successful candidate will contribute to building and scaling integration tools, while collaborating across engineering teams. The role requires strong full-stack capabilities, a background in software ...

Senior Full Stack Engineer, Trust & Safety – Remote

A leading financial technology company is seeking a Full Stack Engineer to enhance customer journeys during authentication and verification. This role involves owning quarterly goals, collaborating with various stakeholders, and implementing high-availability systems. The ideal candidate will have 4+ years of ex ...

Remote Python Engineer – Backend APIs (Entry Level)

A dynamic tech company is seeking an Entry-Level Python Engineer to join their growing engineering team in Toronto. Ideal for recent graduates, you will develop scalable applications, backend services, and APIs in a collaborative, fast-paced setting. The role includes writing clean Python code, participating in ...

Senior Frontend Engineer, Cases Product – Hybrid SF

A technology-driven legal firm in Toronto is seeking a Backend Software Engineer to enhance their integration engine and improve user experiences. The role involves full project ownership, collaboration with engineers, and documentation of technical requirements. The ideal candidate has over 5 years of experienc ...

Senior Backend Engineer, New Products — Hybrid Role

A leading technology company in Toronto is seeking a Software Engineer to help build and launch new products that impact personal injury workflows. You’ll work with a collaborative team, using technologies like Python and React, to deliver solutions that improve lives. Ideal candidates have 5-10+ years in engine ...

Senior Mainframe Developer | Cobol, JCL & DB2 Expert

A leading financial institution in Toronto is seeking a Software Engineer to contribute to the Pricing and Rates applications. The successful candidate will have 5-8 years of experience in systems analysis and development, with strong skills in Cobol and agile methodologies. This role involves coding, debugging, ...

AI Driven Backend Engineer (Serverless, TypeScript)

A Canadian FinTech company is seeking a Software Engineer, Backend to evolve its serverless infrastructure using cutting-edge AI tools. This role focuses on leading the architectural evolution, refactoring existing systems, and designing robust data pipelines and payment processing systems. Ideal candidates shou ...

Rugged Mechanical Design Engineer, Construction IoT

A construction IoT company in Toronto is seeking a Mechanical Design Engineer with over 5 years of experience in end-to-end mechanical design for robust, compact devices. The ideal candidate is proficient in CAD software and has hands-on problem-solving skills. You will work collaboratively with cross-functional ...

Senior Python Engineer Microservices & Banking Platform

A tech company in Ontario is seeking a Senior Software Engineer to enhance its banking platform. The role involves designing scalable solutions, mentoring engineers, and participating in sprint planning. The ideal candidate has over 7 years of experience, proficiency in cloud computing, Docker, SQL, and Python, ...

DevOps Engineer IaC, CI/CD & Automation in Toronto

A leading transportation solutions provider in Toronto is seeking a full-time DevOps Engineer to modernize and automate infrastructure. The role involves contributing to Infrastructure as Code using tools like Terraform and Ansible, maintaining CI/CD pipelines, and collaborating across engineering and IT teams. ...

Senior Backend Engineer Financial Tech (Rust/Python)

A leading financial technology advisory firm in Toronto is seeking a financial software engineer to join their back-end team. The role involves designing and implementing cloud-native solutions, engaging with stakeholders, and building performance-critical systems using Rust and Python. Candidates should hold a ...

Senior Backend Engineer Financial Tech (Rust/Python)

A leading financial technology advisory firm in Toronto is seeking a financial software engineer to join their back-end team. The role involves designing and implementing cloud-native solutions, engaging with stakeholders, and building performance-critical systems using Rust and Python. Candidates should hold a ...

Senior Backend Engineer Financial Tech (Rust/Python)

A leading financial technology advisory firm in Toronto is seeking a financial software engineer to join their back-end team. The role involves designing and implementing cloud-native solutions, engaging with stakeholders, and building performance-critical systems using Rust and Python. Candidates should hold a ...

Senior AI Backend Engineer: Scalable, High Performance APIs

A leading technology firm in Toronto is seeking a Senior Software Engineer to design and optimize backend systems for AI-powered platforms. In this role, you will architect high-performance services, manage large-scale data flows, and collaborate with cross-functional teams to implement AI capabilities. Candidat ...

Senior Full Stack Engineer Remote Healthcare Infra & AI

A healthcare technology company is looking for a Senior Full Stack Engineer based in Toronto. This position will initially start as remote, transitioning to a hybrid model once the Toronto office opens. Responsibilities include architecting technical integrations and designing data pipelines to enhance healthcar ...

Full Stack LLM Engineer: Model Bringup & Optimization

A leading AI technology company in Toronto is seeking an experienced engineer to join their Inference Core Model Bringup team. In this role, you'll contribute to the rapid deployment of state-of-the-art AI models, working across the entire software stack. The ideal candidate possesses strong skills in debugging ...

Senior Underground Mining Estimator & Project Lead

A leading mining contractor is seeking a Senior Mining Engineer & Project Estimator based in Canada. The successful candidate will be responsible for preparing detailed cost estimates for various underground mining projects, ensuring competitive tender submissions that align with company goals. This role demands ...

Senior Python Engineer Microservices & Banking Platform

A tech company in Ontario is seeking a Senior Software Engineer to enhance its banking platform. The role involves designing scalable solutions, mentoring engineers, and participating in sprint planning. The ideal candidate has over 7 years of experience, proficiency in cloud computing, Docker, SQL, and Python, ...

Rugged Mechanical Design Engineer, Construction IoT

A construction IoT company in Toronto is seeking a Mechanical Design Engineer with over 5 years of experience in end-to-end mechanical design for robust, compact devices. The ideal candidate is proficient in CAD software and has hands-on problem-solving skills. You will work collaboratively with cross-functional ...

Associate Python Engineer: Cloud & Microservices (Contract)

A tech recruitment firm in Toronto is seeking a Senior Python Software Engineer to enhance community knowledge with innovative solutions. The role requires expertise in Python and understanding of cloud computing, distributed systems, and relational databases. Strong communication skills and experience with GitH ...

Senior Backend Engineer Financial Tech (Rust/Python)

A leading financial technology advisory firm in Toronto is seeking a financial software engineer to join their back-end team. The role involves designing and implementing cloud-native solutions, engaging with stakeholders, and building performance-critical systems using Rust and Python. Candidates should hold a ...

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