211,454+ Lead Software Engineer Pythonreact Jobs in Toronto, Canada — Local Employers Hiring June 2026

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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 opportunities w ...

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. Team The Automotive Lending Technologies team supports the enhancement, development, and maintenance of c ...

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 ...

Software Engineer II, Machine Learning (Fraud)

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. On the ML Fraud team, you’ll build and improve machine learning systems that make real‑time transaction decisions, protecting consumer ...

Amazon Software Engineer II, Measurement Team

Be at the forefront of Amazon's advertising efforts as a Software Engineer II within the Measurement and Data Science division. Work with Big Data technologies like Elasticsearch and AWS services to create impactful analytics products.This role emphasizes building and refining systems capable of managing mas ...

Senior Engineer in AI Software Development

Become a Senior Engineer at Fitch Ratings in Toronto, where you'll lead AI software development initiatives. Create full-stack solutions that transform how financial services operate.This senior role centered on innovative AI technologies allows you to architect and drive the implementation of new applicatio ...

MTS2 Software Engineer, iOS, eBay Live

At eBay, we're more than a global ecommerce leader — we’re changing the way the world shops and sells. Our platform empowers millions of buyers and sellers in more than 190 markets around the world. We’re committed to pushing boundaries and leaving our mark as we reinvent the future of ecommerce for enthus ...

Voice Insights Staff Software Engineer Role

Join SoundHound AI as a Staff Software Engineer focused on Voice Insights. Create scalable applications that leverage voice technology to enhance users' interactions in the restaurant industry.In this pivotal role within the Restaurant Applications team, you'll be responsible for designing and architecting r ...

Software Engineer Scala in Liquidity Tech

Step into a rewarding Software Engineer role at a leading wholesale bank in Toronto, focusing on Liquidity Technology and Scala development. Make a difference by enhancing financial backend systems.Exadel's offer for this position calls for 5–7 years of backend engineering experience. You will work with larg ...

Senior Software Engineer in Performance Engineering

Drive innovation in software performance at Sentry as a Senior Software Engineer. Tackle complex issues in a hybrid work environment designed for collaboration.Join Sentry’s Issue Workflow team, where you will primarily focus on high-scale distributed systems. Your leadership in technical strategies will be ...

Senior Software Engineer (Python + Distributed systems)

Scribd, Inc. is on a mission to advance human understanding. Our four products — Scribd®, Slideshare®, Everand™, and Fable — help billions of people across the globe move beyond access and into insight, application, and expertise. Culture at Scribd, Inc. We support a culture where our emp ...

Senior Quality Engineer Software at Scribd

Shape the future of quality engineering at Scribd, Inc. as a Senior Quality Engineer, focusing on testing strategies and AI integration for enhanced software delivery. Your expertise will be transformative.As a key member of our Quality Engineering team, you'll manage the quality infrastructure that propels ...

Intermediate Software Engineer Java (Project Management)

Computer Methods International Corp. (CMiC) is a Software Development firm specializing in enterprise financial and cost management systems designed for the Construction and Engineering industries. About CMiC CMiC is the leading provider of complete, integrated and advanced enterp ...

Staff Software Engineer Agentic AI Systems

Job Title Staff Software Engineer - Agentic AI Systems About the Role We are seeking a Staff Agentic AI Engineer to lead the architecture, implementation, and production deployment of advanced agentic AI systems. In this role, you will serve as a technical author ...

Senior Software Engineer for LMN Pro

Granum is seeking a Senior Software Engineer (P4) to enhance the LMN Pro platform, impacting the landscaping industry. Focus on delivering quality and innovation in software solutions.In this critical role, you’ll become part of the LMN feature pod, where your contributions directly influence the user experi ...

Senior Software Engineer Web API Platform

Scribd, Inc. is on a mission to advance human understanding. Our four products — Scribd®, Slideshare®, Everand™, and Fable — help billions of people across the globe move beyond access and into insight, application, and expertise. Culture at Scribd, Inc. We support a culture where our emp ...

Senior Software Engineer II, Kora Compute

We’re not just building better tech. We’re rewriting how data moves and what the world can do with it. With Confluent, data doesn’t sit still. Our platform puts information in motion, streaming in near real‑time so companies can react faster, build smarter, and deliver experiences as dynamic as the world a ...

AI Software Engineer Role in Toronto

Drive innovation as an AI Software Engineer with Peakhill Capital in Toronto. Engage in developing robust software solutions with leading-edge AI technologies.As part of Peakhill Capital’s growing team, you’ll focus on creating and maintaining software that meets both staff and customer needs. Your experienc ...

Senior Software Engineer, Backend (Continuous Delivery)

Overview 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 Continuous Delivery team works within Developer Productivity to build and improve platforms, workflows, and gua ...

Senior / Staff Software Engineer (Observability / SRE)

Waabi, founded by AI visionary Raquel Urtasun, is the leader in Physical AI. With a world‑class team, we’re unlocking the next era of autonomous transportation with technology that’s powering commercial autonomous trucks and robotaxis. Waabi is backed by and partners with world leaders in AI, automotive, l ...

Staff Software Engineer (Backend) Fable Core

Scribd, Inc. is on a mission to advance human understanding. Our four products — Scribd®, Slideshare®, Everand™, and Fable — help billions of people across the globe move beyond access and into insight, application, and expertise. Culture at Scribd, Inc. We support a culture where ...

Senior Software Engineer (Full Stack JavaScript)

About Morningstar Morningstar unites problem solvers with a clear goal: helping investors achieve their financial objectives. As a leading investment research and data company, we stand out by how we apply our insights to serve a broad range of users. Our independent investment research, powered b ...

Xanadu Quantum Software Engineer Performance Focus

Drive performance advancements in quantum computing at Xanadu as a Quantum Software Engineer. Your focus will be on optimizing software frameworks for quantum capabilities.In the PennyLane Performance Team, you will play an essential role in building a high-performance software stack that enhances the capabi ...

Sr Software Engineer Basis Platform / DSP

WHO WE ARE At Basis, we empower agencies and brands with cutting‑edge software that automates digital media operations. Our all‑in‑one platform supports seamless planning, reporting, and financial reconciliation across direct, programmatic, search, and social media. We’re not just building ...

Senior Software Development Engineer AWS Marketplace

Senior Software Development Engineer – AWS Marketplace We are seeking an experienced Software Development Engineer to help AWS Marketplace grow and enhance its cloud marketplace platform. The role involves owning significant portions of the product, defining next‑wave features, and shaping system ...

Software Engineer with Talend and Python

Title: Software Engineer with Talend and Python Location(s): Canada: Ontario: Toronto The Senior Developer will support the Global Treasury Technology team, working on multiple projects, partial application support, as well as assisting with enhancements. In this role you will: < ...

Staff Linux Software Engineer (Platform & Infrastructure)

Job Position Title of position: Staff Linux Software Engineer (Platform & Infrastructure) Position type: Full time Location: Thornhill, Toronto, Canada Position reports to: Senior Manager of Development Engineering A ...

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 ...

Hybrid Staff Software Engineer at EvenUp

Transform the legal landscape as a hybrid Staff Software Engineer at EvenUp. Build robust backend systems that power LLM applications from our Toronto office three days per week.At EvenUp, our mission is to leverage AI technology to promote fairness in the justice system. As part of the AI Platform team, you ...

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 system ...

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 ...

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. Your ...

Founding Software Engineer for Transit Solutions

Drive impactful changes in Toronto's transit system as a Founding Software Engineer for Transify. Work with cutting-edge tech to create solutions that maximize operational efficiency.Transify is actively seeking a mission-driven engineer to enhance its Transit Data Visualization Platform based in Toronto. Co ...

Senior Software Engineer Role at Fulfil

Fulfil invites you to apply for the Senior Software Engineer II position in Toronto, Ontario. This full-time role emphasizes ownership of web functionalities and innovative AI integrations in a flexible hybrid environment.In this SDE-II role, you will build and oversee the development of web applications, in ...

Senior Software Engineer Backend at Pinterest

Shape the future of inspiration at Pinterest as a Senior Software Engineer specializing in backend development. In this role, you’ll craft robust frameworks and improve developer processes.You will work within the Monetization and Core engineering teams, enabling new technologies and experiences. Your initia ...

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 your e ...

Senior Software Development Engineer, Agentic AI

## Senior Software Development EngineerApplyremote type: Flexlocations: Canada, ON, Toronto: Canada, BC, Vancouvertime type: Full Timeposted on: Posted Yesterdayjob requisition id: JR- **Your work days are brighter here.**We’re obsessed with making hard work pay off, for our people, our customers, an ...

Tubi Senior Software Engineer Rust Focus

Enhance your career at Tubi as a Senior Software Engineer focused on Rust. This role emphasizes backend development and integration of AI tools for efficiency.You will drive the evolution of Tubi's backend infrastructure while maintaining high-performance Rust services. Collaborating with various teams, you ...

Basis Senior Software Engineer Platform Focus

Become a pivotal force in digital media at Basis as a Senior Software Engineer focusing on platform development. Utilize your skills in cloud technologies and collaborative engineering while working flexibly.Basis is searching for a candidate with over 5 years of experience in software development. You will ...

Engineer for Clinical Decision Support Software

Beacon seeks an experienced Engineer to develop its Clinical Decision Support software. This role directly impacts how patients' end-of-life values are captured and supported.As the first engineering hire, you'll oversee the full stack architecture of the platform, working closely with LLM technologies and p ...

Software Engineer Backend Focus at DoorDash

Elevate backend systems at DoorDash as a Software Engineer in Toronto with a hybrid working model. Engage in developing applications that power our logistics mission.DoorDash is looking for Backend Engineers at all levels to enhance its global platform. The role involves designing systems, managing backend s ...

Raisin Software Engineer in Support Role

Join Raisin as a Software Engineer in a Support role, resolving technical issues for nonprofits. Focus on .NET and Angular systems while making a social impact.As a Software Engineer in Support at Raisin, you will play a key role in addressing complex technical problems faced by our nonprofit clients. Your p ...

Staff Software Engineer, AI Compute Platform

A leading AI solutions provider in Toronto is seeking a Staff Software Engineer to join their AI Compute team. The successful candidate will lead technical initiatives, mentor engineers, and design systems that optimize performance and reliability. This role requires expertise in Kubernetes, CI/CD processes, and ...

Senior Software Engineer, AI Framework & Services

Secure Every Identity, from AI to HumanIdentity is the key to unlocking the potential of AI. Okta secures AI by building the trusted, neutral infrastructure that enables organizations to safely embrace this new era. This work requires a relentless drive to solve complex challenges with real-world s ...

Banyan Software Forward Deployed Engineer Role

Take on the role of Forward Deployed Engineer with Banyan Software, focusing on application modernization in a remote environment. Enhance your career by driving the integration of AI-assisted development practices.In this high-impact position, you will embed with application teams, providing technical leade ...

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 adopt ...

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 workload ...

Litmus Senior Software Engineer Industrial AI

Join Litmus as a Senior Software Engineer to develop solutions that drive industrial AI forward using Golang. Your contributions will enhance operational efficiency for major manufacturers.At Litmus, a cutting-edge software provider, you will play a pivotal role in shaping applications that utilize real-time ...

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 Management Sys ...

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 of Java ...

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