Top Software Engineer Jobs in Toronto

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.

Lead design and implementation of multi-threaded embedded C/C++ software for Linux/RTOS/bare-metal on multi-core SoCs. Develop drivers and data/control plane functions for RF, antenna, and optical systems; integrate software with hardware, debug using SW/HW tools, champion CI/CD and TDD, and mentor junior engineers. Collaborate across teams to ensure performance, reliability, and secure high-speed data handling for space-based communications.

Own, design, build, and operate backend services that track real-time balances, reservations, and financial activity. Ensure low-latency, high-availability operation, evolve architecture without downtime, mentor engineers, and maintain production quality, observability, and correctness for critical fintech systems.

Design and implement system-level debugging, validation, and observability platforms. Build automated anomaly collection/analysis, visualization and root-cause tools, failure classification and monitoring frameworks. Extend compilers, runtimes and programming interfaces for profiling and instrumentation, improve bring-up and low-level debug workflows, lead cross-functional initiatives, support incident response, and establish debuggability and reliability best practices.

Integrate, validate, and productionize cross-stack inference features across AI frameworks, runtime, compiler, kernels, distributed systems, and hardware. Drive zero-to-one projects, debug system-wide failures, manage accelerated timelines, and improve automation, diagnostics, and repeatable integration practices while collaborating across software and hardware teams.

The Lead Software Engineer will design and develop full-stack applications for construction project management, ensuring intuitive data workflows and collaborating across teams to enhance user experience and performance.

The Staff Software Engineer will lead technical solutions and architectural reviews, mentor engineers, and drive the development of scalable healthcare products.

Lead development of back-end systems and end-to-end data/ML pipelines, build and deploy generative AI workflows, design and consume performant APIs, contribute to AI/ML architecture, mentor engineers, and communicate progress to leadership.

The GTM Systems Engineer will design, build, and maintain Salesforce systems, create automations, manage data, and improve workflows for revenue operations.

Lead and deliver scalable backend integrations, architect web APIs and backend systems, mentor engineers, conduct code and spec reviews, identify performance bottlenecks, collaborate with stakeholders, work with large datasets, and support hiring through technical interviews.

Lead full‑stack development of an AI‑driven web application, designing architecture and end‑to‑end AI/ML systems. Build features across front end and back end, ensure security, scalability, and observability, prototype ML innovations, mentor engineers, and partner with product, design, and business teams to drive technical decisions and delivery.

The role involves collaboration with product managers and team members to design, develop, and test software features for Nokia's Service Router OS, emphasizing code quality and troubleshooting.

Lead the mobile/Windows development team, mentor members, oversee development lifecycle, implement best practices, and ensure high-quality application delivery.

Lead the development of mobile/Windows applications, providing technical guidance and mentorship, ensuring best practices, and overseeing the entire development lifecycle.

Design and maintain backend services for core products, utilizing Go and microservices architecture, while collaborating with teams and ensuring high-quality code.

As a Senior Software Engineer, you will build and maintain data framework integrations for ClickHouse, focusing on high-performance database and developer experience. You will manage full lifecycle integrations, ensuring scalability and reliability for real-time data processing and analytics.

The Senior Software Engineer will architect and build scalable cloud infrastructure, collaborate with teams, and improve system security and performance.

The Senior Backend Engineer will design and maintain backend services for core business functions, ensuring reliability and scalability while collaborating with cross-functional teams.

The Lead Quality Engineer will set quality standards, mentor a QA team, improve testing strategies, and enhance automation in AI-driven workflows.

Lead backend development: design, build, and maintain .NET backend services and RESTful APIs, own backend architecture and API strategy, improve performance and reliability, drive code quality and CI/CD, mentor engineers, collaborate with frontend/product/devops, and share ownership of production health and incident response.

Lead frontend architecture and product development for member-facing web and mobile apps. Build high-performance, accessible React/React Native UIs, own end-to-end features including APIs and backend services, mentor engineers, drive design system and frontend standards, and collaborate with Product, Design, Clinical, and Data teams to deliver scalable, user-centered health experiences.

The Staff Software Engineer will lead initiatives in building a full-stack educational platform, mentor engineers, and collaborate with Product and Design teams.

Optimize Ubuntu integration across latest IoT and server-class hardware, lead customer engagements, and work with open source communities in a remote, collaborative environment.

As a Software Support Engineer, you will troubleshoot and resolve complex issues related to Ubuntu and open source technologies, collaborate with teams, and contribute to community development.

Design, build, and maintain FeeNavigator features across the full stack using PHP/Laravel and Vue. Optimize MySQL queries, write tests, refactor complex code, document architecture, collaborate with Product and SRE, and diagnose production issues to deliver secure, observable, and scalable software.