Top Software Engineer Jobs in Toronto

Senior SDET who contributes across frontend and backend systems by building and maintaining features with a strong testing mindset. Develop and maintain automated tests, improve test coverage and CI/CD, investigate bugs, support regulatory and compliance testing strategies, and balance automation with exploratory and risk-based testing.

Own design, development, and operation of Partner and Billing/Admin portals. Architect and implement full-stack features (React/TypeScript, Node/Next, C#/ASP.NET Core), integrate with HubSpot and ERPs, ensure reliability, security, CI/CD, monitoring, and mentor other developers while supporting stakeholders and incidents.

Own backend and web development, build Zoho automations and integrations, design RESTful APIs, manage and optimize SQL databases, perform code reviews, debug production issues, collaborate with stakeholders, and mentor junior developers to deliver scalable, maintainable solutions.

As a Senior Full Stack Software Engineer at Orum, you will own product features end-to-end, design scalable systems, collaborate with cross-functional teams, and drive technical excellence while mentoring your teammates.

The Senior Software Application Developer will build full-stack features, design APIs, and improve AI integrations while collaborating with product teams.

Develop and improve Firefox installs, updates, and OS integrations (Windows/macOS). Implement platform-specific features, fix complex bugs, participate in code reviews, and collaborate with a distributed team to deliver high-quality browser experiences.

The Principal Software Engineer at Snout will define architectural direction, build features across the stack, and enhance team effectiveness, ensuring quality and performance.

As a Senior Software Engineer, you'll develop and enhance the Snout web platform, collaborate with teams, and lead technical projects while ensuring performance and reliability.

As the AI Agents Solutions Architect at Kraken, you'll design and build an AI-native finance operating system, automating finance operations and ensuring compliance in a regulated environment.

As a Staff Software Engineer on the Developer Platform team, you will enhance CI/CD pipelines, improve developer experience, and productionize AI tooling while mentoring teammates and collaborating with engineering leaders.

The Senior Software Engineer will own feature development from design to deployment, focusing on user feedback and collaboration with ML researchers.

The Senior Software Engineer will focus on backend development, designing and maintaining APIs and services, collaborating on features, and enhancing integrations at Motion.

The Staff Software Engineer will lead the design and reliability of a large-scale financial data extraction platform, focusing on reducing human dependency using AI while ensuring system quality and scalability.

Lead the design and reliability of a financial data extraction platform using AI and deterministic systems to improve accuracy and reduce human dependency.

Lead the design and implementation of high-performance PoP infrastructure, optimize networking software, and mentor engineering teams at Blue Origin.

As a Senior SDET, you will enhance testing practices, improve CI pipelines, mentor engineers, and ensure platform reliability through comprehensive testing strategies.

The Robotics Software QA/Test Engineer will ensure software quality through testing practices, monitor test robots, triage issues, and improve testing tools.

Lead full-stack development of scalable, high-performance front-end and back-end systems using 3D/computer-vision tech. Drive architecture, mentor engineers, own key front-end systems, and deliver features from design to launch while collaborating with internal and external partners.

Develop embedded software for optical line systems, collaborating with hardware and optical engineers. Responsibilities include firmware development, algorithm implementation, and design estimation.

Develop and maintain the macOS endpoint client for an endpoint security product. Design features, shape architecture, review code (including agentic AI-generated code), improve build/deploy/test automation, resolve customer issues, and track macOS/security technologies while mentoring peers and owning product areas.

Lead architecture and backend development for the vCluster platform by designing and implementing Kubernetes-native solutions in Go, owning features end-to-end, contributing to open-source, and solving deep systems challenges around multi-tenancy, isolation, and GPU infrastructure.

Architect and build core backend components of the vCluster platform by working deeply with Kubernetes internals. Write high-performance Go code, take end-to-end ownership from design to release, contribute to open-source projects, and solve complex systems and multi-tenancy problems for GPU and Kubernetes-based infrastructure.

Senior front-end engineer responsible for developing products end-to-end, owning projects from concept through launch, and shaping company direction to drive growth across portfolio companies.

The Senior Software Developer will lead design and implementation of backend systems, mentor peers, and enhance AI capabilities in tax research software, focusing on high-quality standards and rapid delivery.

The Senior Software Engineer will build AI-centric tools, own full-stack development, set technical direction, and lead architectural decisions. They will ensure reliability, observability, and mentor other engineers while addressing gaps in processes.