Top Software Engineer Jobs in Toronto

Leads and mentors a software engineering team while remaining hands-on with Java and full-stack development. Guides architecture, code reviews, technical decisions, sprint planning, delivery, and stakeholder collaboration. Champions engineering practices including automated testing, CI/CD, monitoring, microservices, and continuous releases. Builds scalable production systems, reliable REST APIs, and high-performance database solutions using ReactJS, Java, PostgreSQL, Docker, AWS, and related cloud technologies.

Lead and execute perception R&D and engineering for factory robots: define multi-year roadmap, architect perception pipelines (detection, segmentation, 6-DoF pose, scene understanding), drive sensor fusion and calibration, establish data/model workflows and deployment practices, integrate with planning/control, hire and mentor engineers, and evaluate research for production adoption.

Design, build, deploy, and support scalable distributed observability systems for internal developers and customers. Lead the software development lifecycle, develop and review designs, ensure testing and production readiness, investigate reliability and performance issues, participate in on-call support, and collaborate across teams to improve Temporal’s infrastructure and platform capabilities.

Design, build, ship, and own high-scale, user-facing product features across frontend, backend, and data systems. Define problems, scope and prioritize work, collaborate with Product, monitor production usage, debug incidents, improve reliability, review code, and mentor engineers. The role requires strong backend expertise alongside React proficiency and ownership from product discovery through long-term maintenance.

Build and ship production AI agents that help mobile app developers manage subscriptions and paywalls. Own agent orchestration, tool execution, context management, evaluation, observability, permissions, and human-in-the-loop controls. Develop reliable, secure, user-facing backend systems, scope projects independently, monitor adoption, improve features after launch, participate in architecture and incident response, and mentor engineers.

Lead a team of software engineers while designing and building scalable software applications for KitchenMate’s food micro-market products and business operations. Responsibilities include delivering high-quality and stable engineering, launching products and features, owning initiatives, mentoring teammates, and applying distributed systems, backend, frontend, database, cloud infrastructure, testing, and continuous integration expertise.

Design and implement secure, scalable end-to-end IoT and edge solutions using AWS or Azure. Build fault-tolerant, high-availability cloud and edge systems, create architecture and design documentation, collaborate with cross-functional teams (data, cybersecurity), mentor developers, and guide technical direction while keeping current with IoT and cloud trends.

Design, build, deploy, and own high-performance, scalable data-platform components for streaming analytics, reporting, and ML. Collaborate with cross-functional teams, perform design/code reviews and performance tuning, debug production incidents, participate in on-call rotation, and mentor engineers to scale the organization.

Lead testing for payments, card issuing, and credit systems. Create JUnit 5 test plans and automation, perform API and database testing, track defects and QA metrics, ensure regulatory compliance, and collaborate with engineering and customers to improve product quality.

As a Software Engineer in Data Infrastructure, you will build and maintain high-performance data storage systems for AI training, collaborate with experts, and optimize data processing.

Develop and automate configuration for distributed clusters, create monitoring tools, manage cloud operations, and ensure system reliability for Cerebras AI supercomputers.

Lead frontend design and delivery of AI product experiences using React and TypeScript, mentor engineers, set frontend standards, use AI-assisted tooling, and contribute to backend services in Go and product roadmaps.

Design, implement, and maintain scalable backend systems supporting Alpaca’s financial ledger and brokerage infrastructure. Own high-visibility features from design through deployment, collaborate with finance, operations, product, and engineering stakeholders, and improve system health. Build performant, reliable, maintainable services using modern distributed systems technologies while ensuring the ledger remains a correct source of truth for account transactions, reporting, and compliance.

As a Senior Full Stack Software Engineer at Doxel, you will design and develop applications for project management, focusing on complex data handling and intuitive UI. Your role involves collaborating across teams and providing technical leadership in software projects.

Designs, develops, integrates, tests, and maintains production embedded Linux software for vehicle systems. Responsibilities include modern C/C++ and Qt/QML development, Yocto platform maintenance, Python automation, CI/CD, automated testing, debugging across hardware and software boundaries, release management, architecture, documentation, and production support. The role also provides technical leadership and mentorship while collaborating with multidisciplinary engineering, manufacturing, cybersecurity, and supplier teams.

Lead the technical vision, roadmap, and development of Elasticsearch’s ES|QL analytics and compute engine. Build data-intensive enhancements using modern Java, research algorithms and data structures, collaborate across teams, mentor engineers, guide technical projects, and improve search and analytics capabilities. Work autonomously in a globally distributed environment while partnering with product, user experience, and customer-facing teams.

Own the architectural evolution of Robinhood’s core infrastructure across service mesh, Kubernetes compute, and Terraform provisioning. Lead multi-region platform resiliency, diagnose issues at the Kubernetes, etcd, Envoy, and Terraform provider layers, contribute upstream when appropriate, and drive cross-functional architectural decisions. The role requires deep infrastructure expertise, production Go or Python development, and the ability to influence complex engineering organizations.

The Principal Software Engineer will integrate AI frameworks with cloud infrastructure to enhance performance and reliability, develop prototypes, and collaborate closely with the product team to meet constraints and requirements.

The role involves analyzing software requirements, contributing to software development, mentoring developers, and leading design/code activities in a big data context.

Design and develop next-generation web engine; innovate architecture for performance and resource consumption, with insights on web technologies.

Lead the design and deployment of AI multi-agent systems on cloud platforms, integrate AI models, and collaborate with a global team.

The Research Engineer will design agentic software systems, focusing on AI agents' collaboration in software engineering, prototype frameworks, and optimize engineering processes.

Design and deliver high-quality WPF-based medical device software. Lead architecture, implement complex modules, ensure code quality with unit tests and CI, leverage AI tools with human oversight, execute integration/system testing, maintain documentation, troubleshoot issues, and mentor junior developers.

As a Staff Software Engineer, you will design, build, and scale backend systems for a financial platform while providing technical leadership and collaborating cross-functionally.

Design, build, and scale Sentry's billing infrastructure and usage-tracking pipeline to process massive event volumes with low latency and financial-grade accuracy. Create flexible pricing primitives, address distributed data consistency (delays, retroactive pricing, reconciliation), and collaborate with product, finance, and BizOps to ensure revenue correctness and enable new pricing models.