Top Software Engineer Jobs in Toronto

Lead the design and delivery of SaaS products powered by data, ML, and AI, collaborating across backend, systems, and cloud infrastructure. Drive architecture evolution, ensure operability and performance, and mentor engineering teams.

As a Staff Engineer, you will lead architecture design and development, mentor junior engineers, and improve DevOps processes in a cloud services environment.

As a Senior Frontend Engineer, you'll develop UI features for the AI voice platform, working with React and TypeScript while collaborating on backend systems and leading projects from concept to launch.

As a Senior Software Development Engineer in Test, you will design automated test frameworks, execute tests for payment workflows, and ensure high-quality integration with ERP systems.

Develop core backend components for a blockchain network, focusing on reliability and scalability, mainly using Rust. Ensure code quality through testing and debugging.

Lead design and delivery of Guidewire solutions: hands-on development, configurations, integrations, migrations and full implementations. Translate business requirements into scalable technical solutions, collaborate with delivery teams and client stakeholders, and coordinate with onshore/offshore resources to ensure quality outcomes.

Design and build applications in Python, collaborate with clients, optimize performance, and ensure code quality in AI-driven projects.

Design, build, and operate core distributed systems in Rust powering messaging, storage, eventing, and fanout across a global real-time platform. Focus on reliability, performance, observability, incident response, capacity planning, and running services in Kubernetes-based production environments.

Design, scale, and performance-tune GraphQL APIs, gRPC services, and SQL queries for a promotions engine. Deliver end-to-end features, own complex technical problems, troubleshoot production performance, set up DataDog monitoring, participate in on-call rotations, and mentor teammates across the codebase.

Own architecture, development, and reliability of ecommerce web applications (Symfony storefront and Laravel back-office). Lead front-end JavaScript/CSS direction, optimize SQL schemas/queries, improve observability and incident response, reduce legacy technical debt, establish AI-assisted development workflows, mentor engineers, and drive end-to-end delivery of scalable customer-facing features.

Design, build, and architect stablecoin and crypto infrastructure; integrate DEXs, DeFi protocols, and wallet providers; develop smart contract interactions; expand crypto product functionality and asset selection; collaborate cross-functionally; establish crypto development standards and ensure security and reliability for large-scale user experiences.

Build, scale, and maintain Tenable's cloud-based vulnerability management platform for private and U.S. government customers. Troubleshoot escalations, automate deployments and monitoring, collaborate across engineering teams, document operational procedures, participate in on-call rotation, remediate infrastructure/container security issues, and contribute to reliability, standardization, and production deployments.

Design, implement, and maintain scalable Java-based software solutions. Collaborate across the SDLC with stakeholders and development teams, integrate DevOps and CI/CD practices, support operational tasks, ensure security and performance, drive feature development, conduct code reviews, and stay current with emerging technologies.

Own end-to-end AI product development: design, build, deploy, and iterate full-stack AI-native features (agents, RAG, tool-use). Integrate models, telemetry, evals, and data; partner with product and operations to ship production-ready solutions for restaurant delivery and operations.

Design, build, and maintain scalable test automation frameworks. Automate functional, API, and integration tests, analyze failures, integrate tests into CI/CD, support performance/load testing, document processes, and collaborate with engineering, product, and QA teams in Agile environments to ensure end-to-end quality.

Design, build, and operate high-throughput, secure backend services and APIs for a cloud-native identity visibility and intelligence platform. Contribute to system design, resiliency, test automation, and production support (including on-call). Deliver scalable microservices, CI/CD-driven deployments, and infrastructure-as-code.

Design, build, and operate scalable backend services for courier logistics. Own end-to-end systems including data modeling, event-driven flows, deployments, observability, and incident response. Mentor peers, drive architecture for distributed systems, and collaborate across product, mobile, QA, and data teams to deliver reliable backend features at scale.

Build and scale core research infrastructure and agentic systems across backend, frontend, and model integrations. Own reliability, observability, and performance; ship research-proven features to production rapidly and develop shared tools and SDKs to accelerate Research, QA, and Engineering.

Lead design and delivery of self-service platform capabilities: provisioning, deployment, observability, and multi-region networking. Drive RFCs and cross-team alignment, build APIs (primarily in Go), implement Terraform/GitOps flows, improve EKS reliability and Grafana-based SLOs, and reduce operational toil via safe, auditable automation. Own on-call rotation and platform adoption outcomes.

Design and build high-correctness Rust services on critical platform paths, introduce Rust for safety and performance, own systems end-to-end from architecture to operations, reason about concurrency and async, improve reliability and observability, collaborate across polyglot stacks, and mentor engineers.

Design, build, and maintain scalable data pipelines and tenant-aware APIs to ingest and transform data from ad platforms, order systems, and real-time events. Ensure reliability, observability, and maintainability across event-driven and batch architectures, implement authentication flows, optimize data workflows in a cloud-native environment, and collaborate with product, infrastructure, and data teams to onboard new sources.

As a Senior Software Engineer at Ayama, you will build and improve AI-based systems, design data pipelines, and develop full-stack product features. This role requires strong architectural judgment and hands-on experience with optimization problems and large-scale data processing.

The role involves architecting AI solutions for compliance, ensuring regulatory adherence, automating processes, and enhancing team capabilities through technology and training.

As a Senior Software Engineer, you will build and operate Upbound Spaces, resolve issues in SaaS environments, develop features, support project lifecycles, manage Kubernetes services, and enhance operational tools.

As a Senior Software Engineer, you'll own product features, design scalable systems, mentor teammates, and ensure engineering excellence, focusing on real-time workflows for the Dialer team.