Top Software Engineer Jobs in Toronto

Lead technical direction across multiple teams for large-scale, distributed backend systems. Design and deliver scalable microservices, ensure observability and performance, mentor engineers, participate in incident response, and collaborate with Product and Design. Work primarily on backend services (Clojure/Finagle/Kafka/AWS) with occasional contributions to frontend and mobile as needed.

Lead design, develop, test, deploy, and support .NET-based software solutions. Mentor developers, collaborate with cross-functional teams, tune performance, implement CI/CD and automated testing, and ensure solutions meet functional and non-functional requirements within a secure, risk-aware fintech environment.

The Senior Software Development Engineer in Test will participate in scrum activities, design test cases, automate testing, and ensure quality in software development.

The Software Developer will design optimization software, develop features, analyze algorithms, and collaborate with R&D teams to enhance product quality.

As a Software Engineer Intern, you will assist in developing features for a climate adaptation software, collaborating with teams and learning modern engineering practices.

The role involves designing and developing high-performance Java-based microservices in a fast-paced environment, collaborating with stakeholders, ensuring system stability, and modernizing the tech stack.

As a Software Engineer at Canonical, you will design, build, and ship software, improve packaging and distribution processes, and mentor colleagues while contributing to open source projects.

The Junior Ubuntu Software Engineer will design, build, and ship software, focusing on quality and resilience, while engaging with the open source community.

As a Principal Engineer, you will lead AI-driven backend systems for audit products, ensuring scalable, reliable workflows while mentoring teams and influencing technical direction.

As a Staff Software Engineer, you'll build scalable systems for the Tokenization Engine and mentor juniors, collaborating with cross-functional teams to enhance system performance and stability.

As a Senior Software Engineer on the JavaScript SDK team, you'll innovate and enhance SDKs across multiple server runtimes, emphasizing AI tools, open-source contributions, and direct user engagement.

The role involves developing JavaScript SDKs, owning projects end-to-end, leveraging AI tools, engaging with open-source communities, and addressing user feedback directly.

As a Senior Software Engineer, you'll collaborate with teams to build solutions, mentor junior members, ensure code quality, and drive best practices in a supportive environment.

Join Aviya Aerospace Systems as a Software Verification Engineer, focusing on the validation and verification of embedded software for flight control systems following DO-178C standards.

The Staff Software Engineer will develop and deploy high-performance machine learning systems, optimizing large language models for production environments. Responsibilities include ensuring high availability and low latency for AI applications and working collaboratively across teams.

The role involves leading application systems analysis, programming, and managing development teams to implement new systems in coordination with the technology team, while ensuring compliance and best practices.

Manage and lead a team of engineers, oversee software development for ML platforms, and ensure high-quality project execution while collaborating across teams.

The Sr. Software Engineer will design and develop scalable, distributed micro-services for Autodesk's Search Platform, ensuring security and optimizing performance.

The Principal Software Developer will architect and evolve backend systems using Node.js and Python, design RESTful APIs, lead teams, and maintain high reliability and performance in a scalable environment.

As a Principal Software Developer, you'll lead technical designs, mentor team members, collaborate with stakeholders, and develop scalable SaaS applications for digital twins.

Lead the design and development of Windows desktop applications, ensuring high-quality software through architecture, testing, and accessibility integration, while collaborating with cross-functional teams.

The Senior Software Engineer role involves collaborating on project scopes, optimizing functionality, and designing efficient systems with a focus on Kotlin and cloud services.

We are seeking 2025 and 2026 Graduate Software Engineers to join Canonical's teams focused on open source software. Responsibilities include product roadmapping, coding in various languages, engaging with the community, and ensuring high-quality performance. Candidates should have an exceptional academic track record and experience with Linux.

The role involves building and scaling data infrastructure for multimodal AI systems, developing high-throughput data pipelines, and collaborating with ML researchers and product teams to enhance data systems.

As a Senior Software Engineer at Vanta, you will lead projects, set technical direction, develop product functionality, and mentor engineers, leveraging modern frameworks like TypeScript, React, and Node.js.