Top Software Engineer Jobs in Toronto

Lead architecture and development of a centralized IAM platform: design authentication/authorization, governance, RBAC/ABAC, multi-tenant support, APIs and integrations, drive platform adoption, ensure security and compliance, and mentor engineers.

Design, build, and scale IAM platform services and APIs for authentication, authorization, identity lifecycle, access governance, and compliance. Integrate identity providers and authorization systems, improve scalability and observability, design machine and service authentication, participate in architecture reviews, and mentor engineers.

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.

Join Hive to build and improve a marketing platform, focus on developing and shipping software, optimize system performance, and collaborate with teams.

The Senior Software Engineer will develop and maintain Docker Desktop's lifecycle components, focusing on installation, updates, and performance across macOS and Windows environments, while debugging complex OS-level issues and collaborating with teams.

Design and evolve systems for Motion's infrastructure, focusing on reliable and secure operations across APIs, Linux systems, and cloud environments with a focus on hands-on coding and engineering judgment.

As a Senior Software Engineer, you will design and build backend systems for a wealth management platform, focusing on scalable alternatives for private markets, while collaborating cross-functionally on product development and operational workflows.

The Principal Software Engineer will lead technical initiatives across teams, enhancing engineering effectiveness and ensuring high-quality systems, while mentoring senior engineers.

Lead the design and optimization of programmatic bidding systems, collaborating with engineers and applying analytical methodologies to enhance performance.

As a Senior Software Developer, you will architect and develop robust software solutions, enhance software stability, manage tech debt, and collaborate with teams while staying updated on new technologies.

As a Fullstack Software Engineer, you will develop products for the post-purchase experience by implementing features, maintaining code quality, and mentoring other engineers.

As a Senior Software Engineer for WebExtensions, you'll implement APIs, improve extension reliability, debug issues, and collaborate across teams while supporting extension developers.

Design, build, and operate the Structured Record Access API and shared storage infrastructure for a managed Postgres/DynamoDB fleet. Implement Kafka-based semantic event emission, manage schema catalog and code-first migrations, build developer tooling and SDKs, improve capacity/monitoring/query performance, consult teams on storage readiness, and support production incidents and training.

Lead architecture and technical direction for Athena, building production-grade distributed systems that validate and deduplicate vulnerability data, orchestrate workflows, ensure observability and operational rigor, and scale the product and team while partnering across engineering and customer-facing teams.

As a Software Engineer 2 - Data Acquisition, you'll design and build data ingestion pipelines, ensuring quality and performance across multiple data domains while participating in code reviews and collaborating with data consumers.

Build and operate high-throughput experimentation and recommendation infrastructure. Design APIs and services, use agentic AI workflows (LLMs) for development, ensure performance and reliability, participate in on-call, mentor teammates, and codify AI-native engineering practices.

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 secure, scalable medical imaging platforms, architect distributed systems, and work with AI diagnostic tools.

The Senior Software Developer will design and maintain scalable systems for gaming operations, collaborate with teams, and implement security best practices and AI/ML innovations.

The Senior Software Developer will develop and maintain high-performance payment systems, focusing on microservices, API design, and database management, while adhering to best coding practices.

Clio seeks a Senior Software Developer to build innovative voice and messaging solutions. Responsibilities include working in agile teams, optimizing performance, and mentoring developers while leveraging Node.js and AWS technologies.

The role involves leading consultancy projects and designing Azure solutions for clients, emphasizing effective communication and technical leadership.

Join an early engineering hire at a growing SaaS platform for online communities. Scope and deliver new features, write modular TypeScript/React code, enable AI coding agents, monitor production, and troubleshoot issues while influencing product direction and improving platform scalability and developer experience.

Lead architectural vision and implement core Java/Spring services for device identity and assurance. Define best practices, mentor senior engineers, design scalable REST APIs and high-performance database schemas, improve CI/CD and testing, champion AI-native engineering, and drive security-focused innovation across distributed systems and endpoint security.

Design, build, and own services for a Backstage-based internal developer platform using TypeScript/Node.js. Manage catalog ingestion from Helm, ArgoCD, GCP, and GitHub. Implement developer-facing features and LLM-powered services, ensure reliability on GKE with PostgreSQL/Redis and Datadog, own incident response and runbooks, and collaborate with engineering, governance, architecture, and infra teams on self-service tooling.