211,459+ Lead Software Engineer Pythonreact Jobs in Toronto, Canada — Local Employers Hiring June 2026

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Software Engineer Python Cloud graduate level

Canonical Canonical is a leading provider of open source software and operating systems to the global enterprise and technology markets. Our platform, Ubuntu, is widely used in breakthrough enterprise initiatives such as public cloud, data science, AI, engineering innovation, and IoT. Our custome ...

Graduate HPC Software Engineer — Rust + Python

A systematic proprietary trading firm in Toronto is seeking a Graduate Software Engineer to design and implement high-frequency trading systems. The role is ideal for recent graduates passionate about programming in Rust and Python and interested in solving complex computational problems. With a competitive sala ...

Senior Software Engineer: Health Tech Platform

A leading healthcare technology company in Toronto is seeking experienced engineers to join their team. The role involves building scalable solutions for health data storage and processing. Ideal candidates will have over 6 years of software development experience and strong coding skills in languages like Go or ...

Hybrid Senior Software Engineer — Remote/Onsite

A leading technology firm in Toronto is seeking an experienced Software Developer - Senior to drive software development initiatives. The role involves translating specifications into working applications, coding, testing, and providing post-implementation support. Candidates should have over 10 years of experie ...

Senior Software Engineer for IT Solutions

Drive innovation in IT solutions as a Senior Software Engineer in a hybrid capacity, enhancing systems across multiple platforms. Collaborate on cutting-edge technologies to deliver robust solutions.This senior-level role requires over 10 years of comprehensive IT systems development experience. You will des ...

Senior Software Engineer AI at Klue

Explore a Senior Software Engineer role focused on AI with Klue in Toronto. Your work will prioritize advanced LLM integration for seamless information retrieval and user-centric workflows.In this position, you will lead the development of retrieval-augmented generation systems, utilizing your extensive know ...

Senior Software Engineer for Toast IQ

Join Toast as a Senior Software Engineer and impact the restaurant landscape. Work with the Toast IQ team to innovate and simplify restaurant management.This role calls for a skilled engineer with a minimum of 4 years’ experience in backend technologies like Java or Kotlin. You’ll mentor upcoming engin ...

Principal Software Engineer Multi Tenant Solutions

Lead the development of innovative cloud-native SASE solutions as a Principal Software Engineer at Kaseya. Play a crucial role in enhancing the scalability and resilience of distributed systems.Kaseya is looking for a Principal Software Engineer to focus on designing multi-tenant solutions for their SA ...

Senior Software Engineer (C++ / Golang / Rust)

About the Role We’re looking for aSenior Software Engineer specializing in Rustto lead the evolution of our backend platform and tooling. This role will focus on developing and maintaining critical Rust-based tools and infrastructure which could bring Tubi to its next era. In this role, you’l ...

Principal Software Engineer, BI & Data Platform

Are you driven by innovation and looking to thrive in a fast-paced, growing environment? Join us at Calabrio‑Verint and be part of our dynamic team! Help us in reshaping the landscape of customer experience – where every interaction becomes an opportunity, and every insight drives meaningful change.Cal ...

Amazon Software Engineer for Global Training

Impact the training experience at Amazon as a Software Development Engineer within the Umbrella Training team. This full-stack role involves developing critical software for over 2 million Associates.As a Software Development Engineer II, you will tackle the challenges of the Umbrella Learning Manageme ...

Camunda 8 Java Software Engineer Role

Join as a Camunda 8 Java Software Engineer focusing on backend solutions and microservices development. Collaborate on innovative projects within the lending or regulated financial services sector.This role seeks candidates with 8-10 years of software development experience, with a deep understanding o ...

Software Engineer (Rust + Python) Surrey, BC

Whistler Alpha Research is a research arm of Whistler Trading, a systematic proprietary trading firm founded by industry leaders who previously built some of the most successful businesses in quantitative finance and high-frequency trading. We’re on a mission to build elite trading systems and infrastructu ...

Compiler Development Engineer for Quantum Software

Advance your career as a Compiler Development Engineer, addressing software challenges in quantum computing applications. Collaborate with a scientific team to enhance our unique compiler pipeline and features.Candidates should possess a Ph.D. in Computer Science or Physics, focusing on quantum computation o ...

Quantitative Software Engineer: ML, Math & LargeScale

A renowned consulting firm in Toronto is looking for a Quantitative Software Engineer to tackle complex computational challenges. Responsibilities include developing systems for machine learning and quantitative algorithms, while collaborating with research partners. Ideal candidates have a BS in Computer Scienc ...

Senior Software Engineer Control Plane Design

Become a key player in control-plane design as a Staff Software Engineer. Focus on creating robust systems that enhance the performance and reliability of a major cloud infrastructure.This position involves the end-to-end ownership of complex control-plane systems while addressing high-impact opportuni ...

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 drive measurable res ...

C#, .Net Software Engineer with NodeJS

C#, .Net Software Engineer with NodeJS Requisition ID: Join a purpose driven winning team, committed to results, in an inclusive and high-performing culture.TeamThe Automotive Lending Technologies team supports the enhancement, development, and maintenance of corporate applications ...

Rapid Fire Software Engineer for AI

Become a pivotal Software Engineer focused on consumer AI creation. Embrace a fast-paced environment where you can produce substantial results while owning the entire application lifecycle.You will be involved in shipping features frequently, ensuring user feedback drives new developments. Your respons ...

Low Level Software Engineer at Tenstorrent

Advance your career with Tenstorrent as a Low-Level Software Engineer focused on system management tooling in a hybrid role based out of Toronto. Use your C/C++ and Python skills to enhance AI systems.Tenstorrent is revolutionizing AI technology and is looking for a Software Engineer with 3–6 years of ...

Software Engineer II Localization at AeroVect

Join AeroVect as a Software Engineer II focusing on localization engineering. Your work will drive improvements in validation and metrics while scaling to new systems in autonomy.AeroVect is expanding its Localization team with the addition of a Software Engineer II. In this position, you will harness ...

Senior Software Engineer, AI Inference Systems

We are seeking highly skilled and motivated software engineers to join us and build AI inference systems that serve large-scale models with extreme efficiency. You’ll architect and implement high-performance inference stacks, optimize GPU kernels and compilers, drive industry benchmarks, and scale workloads acro ...

AWS Staff Software Engineer at Kaseya

Become a pivotal part of Kaseya’s innovation as a Staff Software Engineer specializing in AWS architecture. Lead the design of resilient cloud infrastructure for extensive data platforms.You'll be instrumental in shaping the cloud strategy, defining standards that ensure systems are secure and scalable ...

eBay Staff Software Engineer AI Platform

Join eBay as a Staff Software Engineer focused on AI platform services in Toronto. Drive architectural innovation and enhance development workflows across the organization.This role demands a technical leader with over eight years of experience designing and operating backend systems. You will influenc ...

Software Engineer (AI First), Fleet Operations

Who We Are SWTCH is pioneering EV charging solutions for multifamily and commercial properties across North America. Since 2016, our team of entrepreneurs, energy professionals, and technologists has been focused on unlocking the social, economic, and environmental benefits of widespread EV adoption. Today, our ...

Software Engineer II (Backend #C & .Net)

Staff Frontend Software Engineer (Availability Planning & Experiences) Toronto, Canada*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 o ...

Product Software Senior Staff Engineer Role

Become a key player as a Senior Staff Engineer in Product Software at Equinix. Focus on developing innovative IAM solutions and ensure system reliability in the cloud.The ideal candidate will have 7+ years of experience with the Clojure programming language and a deep understanding of IAM best practice ...

Sr. Software Engineer in Test (Python)

Department:Research & DevelopmentLocation:Canada-CHQ-Ontario-TorontoCompensation:$123,300 - $169,500 / yearThis full‑time, on‑site position is ideal for experienced Senior Software Development professionals with experience in automated testing. We are l ...

Full Stack Engineer for Software Development

Become a Full Stack Engineer responsible for developing software services that enhance user engagement across multiple platforms. Focus on creating scalable and secure technology solutions.This role requires a strong engineering background that includes working on critical software impacting millions. ...

Software Engineer III for Global Systems

Contribute as a Software Engineer III in large-scale technology. Drive the development of systems with global reach, focusing on architecture, performance, and collaboration.In this mid-to-senior level position, your role will be crucial in designing scalable systems that handle extensive daily transac ...

Senior Software Engineer for iOS SDK

Become a Senior Software Engineer specializing in iOS SDK development. Drive mobile app monitoring solutions and innovate using the latest Apple technologies in a hybrid work culture.This role is vital as you will develop the iOS SDK from core architecture through to delivery. You'll spearhead the intr ...

Senior Software Engineer in Payment Innovation

Shape the future of payment processing as a Senior Software Engineer. Drive high-impact projects focusing on scalability and performance of card issuing platforms, working remotely from Canada.This role centers on both technical ownership and hands-on coding, allowing you to influence the development o ...

Senior Software Engineer with AI Expertise

Become a Principal Software Engineer and transform insurance through AI. Manage core platform architecture and lead innovative engineering initiatives onsite with our expert team.This role emphasizes your ability to solve complex challenges while defining technical strategies that align with business g ...

Software QA Automation Engineer 3D/CAD

Advance your QA career as a Software QA Engineer focused on automation for 3D and CAD platforms in a remote role. Drive quality engineering initiatives and optimize test strategies.This position requires 3-5 years of experience testing complex interactive applications across multiple platforms. You wil ...

Java Software Engineer with Agile Skills

Drive innovation as a Java Software Engineer with robust Agile skills. Work closely with product owners and development teams to implement high-performance features that meet business needs.You will play a critical role in gathering requirements and leading backlog coordination for feature development. ...

Senior Python Software Engineer (Data&Connectors)

DataRobot delivers AI that maximizes impact and minimizes business risk. Our platform and applications integrate into core business processes so teams can develop, deliver, and govern AI at scale. DataRobot empowers practitioners to deliver predictive and generative AI, and enables leaders to secure their AI ass ...

Agile Software Engineer for Innovative Solutions

Drive innovation as an Intermediate Software Engineer within a devoted Software Engineering team. Partake in a collaborative atmosphere focused on producing exceptional software for small businesses.In this role, you'll join a Scrum team led by the Software Engineering Manager, working on cutting-edge ...

Senior Software Engineer (Frameworks, JavaScript SDK)

About Sentry Bad software is everywhere, and we’re tired of it. Sentry is on a mission to help developers write better software faster so we can get back to enjoying technology.With more than $217 million in funding and 100,000+ organizations that believe we’re on to something, we're building performan ...

Senior Software Engineer (Node, JavaScript SDK)

About Sentry Bad software is everywhere, and we’re tired of it. Sentry is on a mission to help developers write better software faster so we can get back to enjoying technology.With more than $217 million in funding and 100,000+ organizations that believe we’re on to something, we're building performan ...

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 object ...

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 im ...

Software Engineer Specializing in Siebel Applications

Become a pivotal Software Engineer focusing on Siebel applications and report development. With your extensive Siebel background, drive innovation in software solutions and technical support.This position requires a seasoned engineer to transform technical specifications into valuable applications. You ...

Security Centric Software Engineer at Cohere

Cohere seeks a Software Engineer focused on security to bolster our AI architecture. Engage in secure coding and enhance production systems for user safety.In the North team at Cohere, your contributions will help shape secure AI experiences. As a Software Engineer with a security emphasis, you'll deve ...

eBay Senior Software Engineer Ad Systems

Enhance eBay's advertising systems as a Senior Software Engineer focused on building robust backend services for ads. Join a team committed to quality and innovation in a fast-paced environment.In this pivotal role, you’ll be responsible for designing, implementing, and optimizing backend services that ...

Senior Software Engineer for IT Solutions

Drive innovation in IT solutions as a Senior Software Engineer in a hybrid capacity, enhancing systems across multiple platforms. Collaborate on cutting-edge technologies to deliver robust solutions.This senior-level role requires over 10 years of comprehensive IT systems development experience. You wi ...

AeroVect Software Engineer in ML Ops

Drive innovation as a Software Engineer at AeroVect, specializing in ML Ops for autonomous systems and computer vision. Be part of a team transforming industry standards worldwide.AeroVect is looking for a talented Software Engineer with expertise in ML Ops to enhance the functionality of autonomous gr ...

Senior Software Engineer Agentic AI Systems

Senior Software Engineer - Agentic AI Systems We are seeking an AI Engineer to design, implement, and deploy advanced agentic AI systems. In this role, you’ll build production‑ready AI agents that can reason across multiple steps, leverage a mixture of proprietary models, integrate with semiconductor design tool ...

AI Focused Software Engineer at Waabi

Join Waabi as an AI-Focused Software Engineer, where you'll enhance data labeling and automation for pioneering self-driving technology. Enjoy a flexible work environment while driving significant AI advancements.In this role, you'll bring 4+ years of experience and proficiency in Python to design and ...

Staff Software Engineer Platform App Services

What You’ll DoTechnical Strategy:Define and drive the long-term technical roadmap for Golang-based backend services, ensuring alignment with broader business objectives and platform initiatives.Architectural Leadership:Lead the design and evolution of Postgres-backed distr ...

C++ Software Engineer for Smart Infrastructure

Drive innovation in road safety as a C++ Software Engineer at Derq. Focus on developing and optimizing real-time solutions that make urban mobility safer and smarter.Join Derq, an innovative MIT spinoff dedicated to transforming traffic safety using AI technology. As a Senior Software Engineer, you wil ...

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