senior full stack software developer jobs in Toronto

OpportunityOur Development team is growing, and we're looking for a .NET Full-Stack Developer who's excited to build high-quality, customer-facing features and solve real business problems. You'll work across our stack - C#/.NET, React, and our in-house Storybook component library - on a platform backed by AWS, serverless (Lambda), and a messaging-based...

Build Amazon Customer Service solutions with full-stack expertise across Lambda, Fargate, and React in Toronto. Shape tools for customer service associates. As a Senior Software Development Engineer, you will help evolve associate-facing solutions within Amazon Customer Service. You will guide architecture, lead greenfield projects, and collaborate with...

Our products help legal, finance, and tax teams be transaction and audit-ready by organizing business entity and corporate structure information. Over 370,000 business entities in almost every country are managed on Athennian to automate workflows for ownership, company secretarial, governance, tax, and compliance. We're looking for a driven Senior...

Build AI-powered commercial intelligence at ODAIA as a Senior Software Engineer using React, TypeScript, APIs, and AWS. Work remotely across Canada and the United States. This senior engineering role spans frontend and backend systems for life sciences commercial teams. You will design, build, and ship products with product, design, and ML engineering....

Who We Are Rocscience is a global provider of engineering modelling, analysis, and design software across geotechnical, mining, structural, hydrogeology, and energy geomechanics applications. Engineers and geoscientists rely on Rocscience’s category-leading platform to model scenarios, collaborate across disciplines, and make better decisions on...

About Qorsa Qorsa is a Canadian post-quantum cryptography and cybersecurity company building CasQade — a crypto-agile security platform protecting sovereign government, defence, financial, and critical-infrastructure networks against current and emerging cryptographic threats. We are headquartered in Waterloo, Ontario, with a European subsidiary in The...

Full-Stack Software Engineer new graduate — AI & 3D Creator ToolsCompanyAbout Viggle AI Backed by a16z, Viggle AI is building the world's most advanced controllable video and 3D generation technology, empowering game developers, content creators, filmmakers, and industry professionals to bring their visions to life. From building characters to building...

Gigi is the agentic operating system of enterprise media buying. Our first product is the AI media manager for Amazon DSP. Since launching it in summer 2025, we've grown to manage hundreds of millions in advertising spend on behalf of the largest agencies in the world. We're backed by top venture investors Golden Ventures and Aperiam Ventures. Our founding...

Reference no. R2859178 Position title: Software Engineer - Full Stack Location: Toronto, ON (Hybrid) About the job Ready to push the limits of what’s possible? Join Sanofi in one of our corporate functions and you can play a vital part in the performance of our entire business while helping to make an impact on millions around the world. At Sanofi...

Job Title: Software Engineer: Full-Stack or Software Engineer: Full-Stack (Data) Salary: $100,000-$220,000 + equity options. Location: Remote with occasional in-person work in our co-working space in downtown Toronto.About Us Fiscal.Ai (formerly FinChat) is a leading research and data platform for capital markets. Combining a powerful research Terminal...

Global enterprises work with Fable to make products more accessible for over one billion people who live with disabilities. Our customers include global leaders like Walmart, Slack, and Shopify. Fable was featured on theForbes Accessibility 100list in 2025, awarded Fast Company’s Most Innovative Companies in Design, and has received accolades from global...

About Fable Global enterprises work with Fable to make products more accessible for over one billion people who live with disabilities. Our customers include global leaders like Walmart, Slack, and Shopify. Fable was featured on theForbes Accessibility 100list in 2025, awarded Fast Company’s Most Innovative Companies in Design, and has received accolades...

161 Bay Street (93021), Canada, Toronto,Toronto, Ontario,Senior Staff Software Engineer-Full-StackAbout Capital One Canada. For 30 years, we've been on a mission to change banking for good. We challenge the traditional bank stereotype by integrating machine learning, conversational AI and design thinking into our core operations. We're a bank a tech company...

Staff Software Developer, Full Stack (Provider Experience)About this position About Dialogue Dialogue is the #1 virtual care provider in Canada. By developing our Integrated Health Platform, we provide exceptional online health and wellness programs (primary care, mental health, iCBT, EAP, and wellness) to organizations that want to improve the wellness of...

Mosaic Clinical Technologies (Canada), Inc. is pioneering a new imaging paradigm—shifting radiology from reactive diagnostics to proactive, decision-driven care. Through our AI-native platform, MosaicOS, we unite fragmented technologies into a single, intelligent ecosystem designed to help clinical teams work faster, think smarter and deliver better care....

Software Developer - Full Stack Client: Community Service Cluster Location: Toronto ON Pay Rate: 95- 103/hr incorp Description Responsibilities · Design, implement, and continuously expand data pipelines by performing extraction, transformation, and loading activities. · Required to translate technical systems specifications into working, tested...

Cohere is the leading security-first enterprise AI company. We build cutting-edge foundation AI models and end-to-end products that are designed to solve real-world business problems. We’re training and deploying frontier models for enterprises who are building AI systems. We believe that our work is instrumental to the widespread adoption of AI and we...

Responsibilities Design, implement, and continuously expand data pipelines by performing extraction, transformation, and loading activities. Required to translate technical systems specifications into working, tested applications. This includes developing detailed programming specifications, writing and/or generating code, compiling data-driven programs,...

Requisition ID: 49891Business Unit: Fitch GroupCategory: Information TechnologyLocation: Toronto, ON, CADate Posted: Oct 7, 2026Senior Software Engineer, Full-Stack Applications – PythonFitch Ratings is seeking a Senior Software Engineer to join our global Ratings Technology team in Toronto. You'll build and maintain mission-critical full-stack...

A technology firm in Toronto is seeking a Principal Software Engineer with at least 8 years of experience to lead application development. This role involves building solutions using modern technologies like React and Node.js, mentoring other developers, and collaborating across teams. The ideal candidate will hold a Bachelor's degree in a relevant field and...