Top Software Engineer Jobs in Toronto

Build, optimize, and embed machine learning models for on-device inference within a Go-based detection engine. Own models end-to-end: deploy, monitor performance, detect drift, iterate, and resolve production issues while collaborating with systems engineers and stakeholders.

Lead technical efforts to improve reliability, performance, maintainability, and new features. Partner with product and stakeholders to shape plans, reduce technical debt, improve testability and observability, mentor engineers, raise delivery quality, and drive process improvements for a mature SaaS platform.

Design, build, and optimize scalable AI-enabled application features and services. Integrate ML models and generative AI, ensure secure and test-driven implementations, troubleshoot AI performance, mentor engineers, and drive AI architecture, CI/CD, and best practices across teams.

Develop and maintain embedded C/C++ firmware for analog and Ethernet connectivity devices, perform low-level hardware bring-up and debugging, write Python test automation, collaborate on validation and CI tooling, participate in code reviews and project tracking, and characterize firmware behavior across operating conditions.

Lead end-to-end partner integrations for ClickHouse Cloud: design and build backend architecture (auth, multi-tenancy, data movement), run and operate production systems, own CI/deployment/observability, collaborate with partner platforms and internal teams, and document technical direction.

Lead end-to-end AI solutions as a forward-deployed engineer: scope, design, and deploy ML/LLM systems; partner with clients and stakeholders; build infrastructure, data pipelines, and reusable platform components; mentor engineers; own projects from discovery through production and provide on-call support.

Lead design and implementation of a zero-to-one, real-time collaborative web content platform. Own architecture, build backend sync and delivery services, craft low-latency frontend editing experiences, define engineering standards, evaluate third-party tradeoffs, and mentor engineers while partnering with product and design.

Lead and mentor a team of developers, oversee cloud product delivery, drive engineering practices, and ensure high-quality standards while contributing to cross-functional initiatives.

Lead technical direction and architecture for the Fable backend, own platform reliability (databases, CI/CD, queues, observability), run incident response and postmortems, mentor engineers, collaborate cross-functionally with product/design/ML, and build platform capabilities enabling faster, safer delivery.

As a Senior Software Engineer, you will design and implement scalable systems, lead modernization initiatives, and ensure operational reliability while collaborating with teams and mentoring engineers.

The Senior Software Engineer will reshape the auto repossession and remarketing platform, incorporating AI to enhance operational efficiency and system quality while taking ownership of architecture and technical decisions.

The Staff Software Engineer will lead the technical strategy for AI platform development, architect foundational AI systems, ensure alignment between teams, and mentor engineers while driving organizational engineering standards.

Build scalable ML data pipelines for Waabi's autonomous driving platform. Design, optimize, and manage datasets and training processes while collaborating with scientists and engineers.

As a Senior Software Engineer, you will develop secure, scalable medical imaging platforms, architect distributed systems, and work with AI diagnostic tools.

As a Senior Software Engineer at Canals AI, you'll focus on backend engineering to build scalable systems, manage complex projects, and align engineering efforts with business goals. You'll also guide team members and ensure high-quality deliverables in a fast-paced, product-oriented environment.

As a Senior Software Engineer, you will develop and maintain software for healthcare applications, utilizing big data technologies and programming languages, ensuring high-quality code and system performance.

Define and drive the architectural vision for Okta's UI platform. Build and maintain shared libraries, reusable components, and internationalization/localization infrastructure. Lead cross-team alignment, review high-impact designs, mentor senior engineers, and implement the platform's most complex, foundational components.

Build and own developer-facing platform surfaces (APIs, SDKs, CLIs) that work for humans and AI agents. Drive technical direction, cross-team decisions, and deliver high-quality developer tooling and API experiences at scale.

Lead architecture and deliver enterprise features for Auth0 Organizations. Drive technical improvements, orchestrate cross-team projects, mentor engineers, collaborate with PM/design, and build scalable, secure backend and full-stack services with strong observability.

Lead test strategy and automation for Okta Verify on Linux. Define test plans, build and maintain C++/C#/ .NET Core automated tests, manage CI/CD pipelines, validate desktop and web service behavior, work with product, UX, support, and Linux community to certify releases and OS upgrades.

Design, implement, and operate internal and edge networking infrastructure at global scale across multi-cloud regions. Build services, tools, and automation to expose network functionality, improve routing, failover, and scaling. Lead cross-team initiatives including code and design reviews, ensure operational robustness and security hygiene, and participate in on-call rotation.

Build and evolve Okta's web platform using Next.js and React: design scalable page systems, integrate headless CMS APIs, collaborate on design systems, ensure performance, accessibility, SEO, write tests, and own production issues and developer workflows.

As a Senior Software Engineer, you will design, implement, and maintain backend systems that integrate identity and authorization capabilities into AI workflows, ensuring security and reliability at scale.

The Staff Software Engineer will design, develop, and deliver cloud-native Android security products, collaborating with various teams to ensure high-quality solutions and foster a culture of excellence and continual improvement.

Design, develop, and maintain large-scale Java-based microservices and APIs. Mentor junior engineers, lead small projects, perform advanced debugging/refactoring, ensure API security and quality, and collaborate with product and analytics.