Top Software Engineer Jobs in Toronto

As a Software Engineer on the Insights team, you'll develop observability products and enhance database performance monitoring for clients using Vitess, MySQL, and PostgreSQL.

Join Megaport as a Senior Frontend Software Engineer to develop high-quality web applications, improve systems, and enhance user experiences for both customers and internal users. Collaborate with teams to build responsive and scalable solutions utilizing modern frontend technologies and practices.

As a Software Engineer - L3 Support, you will resolve complex Ubuntu-related issues, collaborate with teams, and participate in upstream communities to drive bug fixes and improvements.

As a Software Engineer, you will resolve complex customer issues related to Ubuntu and open source software, participate in upstream communities, and develop and review code across multiple layers of the software stack.

Develop and support backend systems for CoLab's 3D AutoReview features, integrating machine learning concepts while collaborating across teams. Solve complex math challenges in 3D design analysis.

As a Senior Front End Developer, you will build and maintain responsive UI features using React and TypeScript, collaborating with cross-functional teams to enhance user experience and ensure code quality through best practices.

The role involves designing and building backend services for mobile app user acquisition, focusing on microservices, data pipelines, optimization, and collaboration with data scientists on ML integration.

Lead design and implementation of AI-powered developer tools and integrations (code generation, test automation, docs, knowledge discovery). Build CI/CD and IDE integrations, evaluate emerging AI tech, promote AI-assisted development best practices, and mentor engineers to scale internal platforms and developer productivity.

Build customer-facing backend systems that transform observability data (New Relic, Grafana, Cloudflare) into actionable product insights. Work on Portfolio Insights, OpenTelemetry exploration, and product analytics using Go, Python, and SQL while collaborating with product and design to deliver performant, cost-aware features.

Build and maintain North's Agents & Automations platform: design and ship frontend and backend features, execution engine, integrations, debugging, observability, evaluation, and feedback systems to enable reliable AI-powered workflows.

Develop and maintain MCP tools and the MCP Toolbox for Databases; expand test coverage for agentic coding assistants; refactor and maintain test frameworks; convert technical posts into production-ready sample code and documentation; build real-world data applications (QueryData) to support product R&D and collaborate with cross-functional teams to accelerate agentic AI adoption.

Design, build, and maintain complex distributed systems, develop backend applications using Python, and architect cloud infrastructure to enhance transportation safety and efficiency.

This role focuses on Microservice Architecture and data management strategies for generating pricing requests and optimizing data storage in a fintech context.

The Full Stack Intermediate Software Developer will work on critical platform projects, focusing on product development, solution architecture, and coding best practices while collaborating with the team and ensuring application security.

As a Senior Software Engineer, you will design and build a new lifecycle orchestrator service, mentor engineers, and drive technical strategies while improving engineering standards and processes.

The Staff Software Engineer will shape technical direction, build developer platforms, and design AI agents, enhancing developer productivity and collaboration across teams.

As a Senior Salesforce Developer, you'll design and deliver scalable solutions for Salesforce, develop custom applications, manage integrations, and mentor other developers while ensuring code quality and adherence to best practices.

Develop and optimize low-level infrastructure software that interfaces with Tenstorrent hardware. Build libraries and APIs for inter-node communication and synchronization, improve performance and scalability in distributed environments, support hardware bring-up, testing, deployment, and integrate components with runtimes and programming models.

Design, build, and operate scalable data ingestion, replication, and lakehouse infrastructure to move petabytes of data into a Delta Lake on S3. Improve reliability, observability, security, and developer experience for Spark/Databricks processing. Develop internal libraries and tooling (Go/Python), collaborate with cross-functional teams, and help shape long-term data platform and AI-ready infrastructure.

Build and maintain user-facing features using React and TypeScript, collaborate with teams on growth experiments, and improve frontend architecture.

Join Aleph's engineering team to develop the Core Product, focusing on user-facing features for financial data insights. Collaborate with leadership, design robust software components, and contribute to system architecture in a fast-paced, remote environment.

As a Senior Backend Software Engineer, you will lead on architectural decisions, develop backend services and APIs, and handle scalable architecture for millions of users.

Design and build highly scalable, distributed real-time microservices (primarily in Go). Work with large datasets and databases, use messaging queues (Kafka, SQS, Kinesis), and write memory- and performance-optimized code for production ad-tech systems.

Seeking a Master's level Front End Developer Intern to design responsive applications using React.js and MUI. Collaboration with cross-functional teams is key.

As a Software Engineer in ML Infrastructure, you will develop scalable data pipelines, enhance data discovery, and collaborate with teams on data organization and ML features.