154,563+ Senior Fullstack Software Developer Pythonreact Jobs in Toronto, Canada — Local Employers Hiring June 2026

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Senior AI Software Engineer Leadership Role

Elevate your career as a Senior AI Software Engineer at Appnovation in Toronto. Oversee the development of innovative AI solutions that set industry standards.This pivotal role combines your full-stack development skills with strategic leadership to guide a talented team. Your mission includes streamlining p ...

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 ...

Senior Manager Software Engineering for Banking

Senior Manager Software Engineering for Banking Requisition ID: 258034 Join a purpose driven winning team, committed to results, in an inclusive and high-performing culture. **The role** As a Sr Manager Commercial Engineering, leading a group of technology professionals respon ...

Senior Quality Lead in Software Engineering

Step into a Senior Quality Lead role in Toronto, Ontario, focusing on software engineering and systems design. This hybrid position seeks to enhance quality processes and team training.We need a leader with a robust engineering background and over ten years of experience in quality assurance, specifically wi ...

Senior Software Engineer Content Platforms Engineering

About the Role Tubi's content platform is the engine behind one of the largest free streaming services in the world. Every play, every deal, every creator, every frame of video flows through systems CPE owns, and the surface area is enormous. Distributed services running on the hott ...

Senior Software Engineer Data Engineering Experience

At Snowflake, we are powering the era of the agentic enterprise. To usher in this new era, we seek AI-native thinkers across every function who are energized by the opportunity to reinvent how they work. You don’t just use tools; you possess an innate curiosity, treating AI as a high-trust collaborator tha ...

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 MLOps Engineer in 3D Software

Drive innovation as a Senior MLOps Engineer in our esteemed AI/ML Platform team. Lead the operationalization of machine learning models to support advanced 3D design solutions and generative AI.In this critical role, your expertise will optimize our AI/ML platform’s operational efficiency, ensuring the ...

Senior Software Engineer at SRED.io (Toronto)

Join SRED.io as a Senior Software Engineer, specializing in MEAN Stack. Engage in the creation of an innovative, AI-powered platform that transforms SR&ED; funding processes for Canadian tech projects. At SRED.io, we are seeking multiple Senior Software Engineers to develop end-to-end features in a fast-pa ...

Senior Manager Software Engineering for Banking

Select how often (in days) to receive an alert: Title: Senior Manager Software Engineering for Banking Requisition ID: Join a purpose driven winning team, committed to results, in an inclusive and high-performing culture. The role As a Sr Manager Commerci ...

Senior Software Development Engineer in Test

Opportunity AC/BT’s mission is to deliver industry‑leading Contact Centre capabilities through cutting‑edge technology solutions. Our team is at the forefront of innovation, shaping the future of client interactions in a rapidly evolving landscape. We’re seeking a Senior Software Development Engi ...

Senior Software Engineer, Frontend (AI Agent)

Are you ready to redefine the future of work with cutting-edge AI? At Cresta, we're on a groundbreaking mission to supercharge the effectiveness of knowledge workers, making them 100x more productive, 10x faster, and 10x better. Responsibilities: Play a substantial role in the Cresta Vir ...

Senior Software Engineer, AI (C#, Cloud)

# **Our Privacy Statement & Cookie Policy*** Optimize LLMs and ML models for high-performance inference using techniques such as quantization, pruning, distillation, and hardware specific tuning* Deploy and scale inference workloads on GPUs across AWS, Azure, GCP and internal Kubernetes clusters, ensuring predic ...

Senior Software Engineer Google AI/ML

Advance your career as a Senior Software Engineer focused on AI/ML at Google, based in Waterloo or Toronto, ON. Create groundbreaking tools to enhance AI agent functionality and performance.As a Senior Software Developer at Google, you will employ your extensive software engineering experience to resha ...

Remote Senior Software Engineer, Voice AI

Lead advancements in emergency response technology as a Remote Senior Software Engineer specializing in Voice AI. This role focuses on creating innovative solutions for 911 communications.Your opportunity lies in a mission-oriented startup dedicated to enhancing public safety through AI. As part of an agile ...

Senior Staff Software Engineer IAM Solutions

Elevate Kaseya’s Identity and Access Management (IAM) capabilities as a Senior Staff Software Engineer. Lead technical development focusing on authentication, authorization, and compliance initiatives.You will spearhead the architecture and execution of IAM solutions, bringing over 10 years of software engin ...

Senior Software Engineer for AI Solutions

Elevate your career as a Senior Software Engineer at Thomson Reuters, focusing on AI systems that transform accounting practices. This hybrid opportunity combines backend development with innovative AI integration using Python.As a Lead Software Engineer, you'll spearhead the design of AI-native systems that ...

Senior / Staff Software Engineer, Simulation Platform

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 ...

Senior Software Engineer at Capital One

Elevate your career as a Senior Software Engineer with Capital One in Toronto. This full-time position blends advanced development skills with technical leadership in a collaborative environment.As a pivotal member of the Capital One team, you will leverage over six years of hands-on development experience i ...

Senior Software Engineer Role at Loop

Lead innovative projects as a Senior Software Engineer at Loop, where we redefine cross-border banking in our downtown Toronto office. Help businesses grow through technical excellence.At Loop, you will be at the forefront of technological innovation, acting as a Staff Engineer responsible for architectural ...

AI Focused Senior Software Engineer Role

Drive innovation in AI-driven solutions at Thomson Reuters as a Senior Software Engineer. This hybrid position offers you the chance to make an impactful contribution in software development.In your new role in Toronto, you will work within the Corporates Tax and Trade team, developing AI and Machine L ...

Senior Software Engineer for OBNC Development

Elevate your career as a Senior Software Engineer focused on OBNC development within business banking. Handle engineering tasks across analysis, defect resolution, and operational improvements to optimize performance.This contractor position plays a key role in delivering essential capabilities for onboardin ...

Senior Software Engineer – Wealth Management Tech

Leverage your software engineering skills as a Senior Engineer in a top financial technology firm specializing in wealth management. Embrace a hybrid work model while employing Python and Django.In this pivotal role, your contributions will influence both engineering and product decisions as you lead project ...

Senior Java Software Engineer Banking Experience

Job Location Downtown Toronto (3 days work from office) Job Description As a Senior Java Software Engineer, you will be responsible for designing, developing, and maintaining high-performance applications using Java and the Spring Boot framework. You will work closely with cross-fu ...

Senior or Principal Software Engineer(s)

Principal EngineerAs a Principal Engineer, you will be a strong technical leader on the individual contributor (IC) track with deep experience in software development. Your primary responsibility will be to drive technical excellence and innovation in our projects.We highly value technical kn ...

Senior Android Software Engineer, Answers Experience

Reddit is a community of communities. It’s built on shared interests, passion, and trust and is home to the most open and authentic conversations on the internet. Every day, Reddit users submit, vote, and comment on the topics they care most about. With 100,000+ active communities and approximately 101M+ daily a ...

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 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 ...

Senior Software Engineer Content Platforms Engineering

About the Role Tubi's content platform is the engine behind one of the largest free streaming services in the world. Every play, every deal, every creator, every frame of video flows through systems CPE owns, and the surface area is enormous. Distributed services running on the hott ...

Senior Software Engineer Google AI/ML

Advance your career as a Senior Software Engineer focused on AI/ML at Google, based in Waterloo or Toronto, ON. Create groundbreaking tools to enhance AI agent functionality and performance.As a Senior Software Developer at Google, you will employ your extensive software engineering experience to reshape the ...

Senior Software Engineer Global Payments Tech

A leading Canadian bank is seeking a Senior Software Engineer to innovate and enhance their payments technology. You'll be responsible for leading technical discussions, developing applications that meet stakeholder needs, and driving a customer-focused culture. This role involves working with cutting-edge techn ...

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 ...

Senior Software Engineer, AI Framework & Services

Secure Every Identity, from AI to Human Identity is the key to unlocking the potential of AI. The company 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 re ...

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 Java Software Engineer Microservices (Onsite)

A technology solutions provider in Toronto is seeking experienced Senior Software Developers for a 2-year onsite contract. This role requires 10+ years in Java / Java EE development and expertise in Oracle RDBMS. You will support existing applications, conduct testing and debugging, and work closely with QA team ...

Senior Software Engineer for AWS Identity

Join the AWS Identity team as a Senior Software Engineer, focusing on cutting-edge identity and access solutions. Contribute to scalable, customer-facing systems that enhance security.In this pivotal role, you will develop and mentor as you design comprehensive systems for AWS. Collaborate with interdiscipli ...

Senior Software Engineer, AI (C#, Cloud)

# **Our Privacy Statement & Cookie Policy*** Optimize LLMs and ML models for high-performance inference using techniques such as quantization, pruning, distillation, and hardware specific tuning* Deploy and scale inference workloads on GPUs across AWS, Azure, GCP and internal Kubernetes clusters, ensuring predic ...

Senior Software Engineer (JAVA) New Toronto

Behavox is a cloud-native AI company providing an integrated controls platform for global banks, asset managers, hedge funds, private equity firms, insurance businesses, and commodity firms. The platform unifies communications and trade surveillance, compliant archiving, policy management as well as front- ...

Senior Software Engineer for Autonomous Solutions

Join Waabi as a Senior Software Engineer and drive innovations in autonomous technology. Be part of a diverse team leveraging AI for the future of self-driving vehicles.This role focuses on developing reliable tools and frameworks to enhance AV technologies. You will lead architectural initiatives, mentor fe ...

Senior Software Engineer (JAVA) New Toronto

Behavox is a cloud-native AI company providing an integrated controls platform for global banks, asset managers, hedge funds, private equity firms, insurance businesses, and commodity firms. The platform unifies communications and trade surveillance, compliant archiving, policy management as well as front-office ...

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 bui ...

Senior Software Engineer Google AI/ML

Advance your career as a Senior Software Engineer focused on AI/ML at Google, based in Waterloo or Toronto, ON. Create groundbreaking tools to enhance AI agent functionality and performance.As a Senior Software Developer at Google, you will employ your extensive software engineering experience to reshape the ...

Senior Software Engineer, Server Security (Toronto)

Senior Software Engineer We are hiring a Senior Software Engineer to join our Server Security team. The team operates close to the bottom of the stack, building features that enable database users to secure their data globally. Key Areas of Impact Cryptography: Queryable Encry ...

Senior Backend Software Engineer at Sentry

Take your expertise to the next level as a Senior Backend Software Engineer with Sentry’s Events Analytics Platform. Focus on enhancing data visibility and performance in a cutting-edge environment.At Sentry, you will engage with the EAP team, responsible for infrastructure powering time-series data analytic ...

Senior Software Engineer, AI (C#, Cloud)

# **Our Privacy Statement & Cookie Policy*** Optimize LLMs and ML models for high-performance inference using techniques such as quantization, pruning, distillation, and hardware specific tuning* Deploy and scale inference workloads on GPUs across AWS, Azure, GCP and internal Kubernetes clusters, ensuring predic ...

Senior Software Engineer for Geometry Algorithms

Shape the future of engineering at Draftaid as a Senior Software Engineer. Lead the development of innovative geometry algorithms and enhance our CAD systems with machine learning capabilities.In this role, you will contribute to Draftaid, focusing on geometry algorithm design and software development with C ...

Senior Software Engineer (JAVA) New Toronto

Behavox is a cloud-native AI company providing an integrated controls platform for global banks, asset managers, hedge funds, private equity firms, insurance businesses, and commodity firms. The platform unifies communications and trade surveillance, compliant archiving, policy management as well as front- ...

Senior Software Engineer for Geometry Algorithms

Shape the future of engineering at Draftaid as a Senior Software Engineer. Lead the development of innovative geometry algorithms and enhance our CAD systems with machine learning capabilities.In this role, you will contribute to Draftaid, focusing on geometry algorithm design and software development ...

Senior Software Engineer, Trust Platform (Toronto)

Company Credit Genie is a mobile‑first financial wellness platform designed to help individuals take control of their financial future. We leverage artificial intelligence to provide personalized insights and are building a financial ecosystem by offering tools and services that provide instant ac ...

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 ...

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    Senior Fullstack Software Developer Pythonreact Jobs in Toronto Job Search Guide, Trends and Insights