Top Software Engineer Jobs in Toronto

Designs and operates Lyft’s foundational networking infrastructure, including service mesh, routing, ingress and egress systems, and control planes on AWS and Kubernetes. The role focuses on scaling high-throughput distributed systems, improving observability and reliability, debugging complex production incidents across networking layers, and providing technical leadership through architecture reviews, incident response, and mentorship.

Work with the Digital Experience Platform team to build applications that improve the Autodesk customer journey. Participate in sprint ceremonies, collaborate with engineering teammates, and learn the team's products and customer experiences.

Staff Software Engineer responsible for designing and building Stream’s high-scale platform and infrastructure. The role includes setting SLOs, leading distributed-systems decisions, developing deployment and debugging tools, improving incident response, optimizing infrastructure costs, and guiding technical direction through design reviews and RFCs. The engineer will work with Go, Python, cloud platforms, Kubernetes, databases, observability systems, and real-time workloads in a small, autonomous team.

Own and design high-impact components of Chainguard's container image platform. Build and improve image build systems, tooling, and services at scale. Drive technical direction, participate in roadmap planning, collaborate cross-functionally, and mentor engineers to raise engineering quality.

The Senior Software Engineer will enhance the core product by developing features and tools for Chainguard Images, collaborating with teams and ensuring product quality.

Supports DO-178C and DO-254 certification activities, SQA audits, compliance checks, certification artifact preparation, configuration management, change control, traceability, and evidence-package maintenance. The role works with engineering and certification teams to ensure safety-critical software processes and deliverables meet standards, assists with audits, tracks gaps and review closures, and improves repeatable quality workflows. It also provides focused support for safety-relevant verification and offers development toward a long-term certification and SQA career.

Build innovative software products in the Special Projects Division addressing public health, agriculture, education, and aid-related challenges in Sub-Saharan Africa. Responsibilities include designing software architectures, developing on UNIX-based platforms, participating in code reviews, using disciplined version control, collaborating with teams, and potentially applying Django, React, Android, or PyTorch. The role may involve travel to Africa to understand local contexts.

Build full-stack marketplace features for search, ranking, and renter-facing products while supporting ML Ops infrastructure. Develop model deployment pipelines, feature stores, real-time data pipelines, monitoring, and production integrations with data scientists. Write tested code, review contributions, plan technical work, and improve system performance, reliability, and scalability. Collaborate with product and globally distributed engineering teams.

Designs and scales distributed platform services, APIs, microservices, and React applications for healthcare technology platforms. Owns architecture, reliability, performance, testing, CI/CD, observability, infrastructure, and production support. Partners with product and clinical teams, mentors engineers, leads technical decisions, and uses AI-augmented development tools. Requires extensive software engineering experience with cloud-native systems, databases, REST APIs, frontend frameworks, and scalable SaaS platforms.

Build full-stack marketplace features and ML Ops infrastructure for search, ranking, and renter-facing products. Develop model deployment pipelines, feature stores, real-time data pipelines, and monitoring using Chalk and Vertex AI. Collaborate with data scientists to productionize models, improve system performance and reliability, write tested code, participate in reviews, plan technical work, and communicate effectively across distributed teams.

Build and own Android growth and monetization experiments across subscriptions, pricing, advertising, purchases, and upgrade flows. Partner with product, design, data science, and analytics to instrument experiments, manage staged rollouts, monitor performance, and act on results. Use AI tools throughout development, contribute to Android architecture and engineering practices, participate in on-call support, mentor engineers, and help scale reliable mobile experiences to tens of millions of users.

Design, develop, and maintain scalable billing and payment-processing systems using C# and PHP. Lead architecture, code reviews, mentoring, CI/CD improvements, monitoring, security, database optimization, and production issue resolution. Use Claude and Cursor daily while validating AI-generated code for correctness, security, performance, and maintainability. Collaborate with product, development, and QA teams to deliver reliable, PCI DSS-compliant software.

Build and operate full-stack trading, onboarding, payments, payouts, and internal tooling applications. Design scalable distributed systems using TypeScript, Node.js, React, and AWS; contribute to architecture, testing, observability, deployments, and production support. Partner with Product and Design, mentor engineers, improve code quality, participate in on-call rotations, resolve incidents, and maintain reliable, secure, high-performing systems.

Architects, develops, tests, and optimizes scalable Java-based web applications using Spring Boot microservices and modern frontend frameworks. Leads software delivery across the full lifecycle, including API design, technical specification refinement, automation, performance optimization, test-driven development, code reviews, and troubleshooting. Collaborates with internal teams and external partners to deliver maintainable solutions, improve engineering workflows, and uphold modern architecture and development standards. The role is remote in Canada and requires working Eastern Time hours.

Build backend services and APIs primarily in Python, with frontend contributions in React and TypeScript. Develop experimentation platforms, near-real-time data ingestion and processing, AI-powered workflows, partner integrations, RBAC, and other product capabilities. Collaborate with product managers, designers, data scientists, and senior engineers while delivering production-ready features across backend, frontend, pipelines, and infrastructure.

Build and maintain reliable data pipelines, integrations, APIs, and event-driven or batch processing systems. Transform data from advertising, commerce, and order management platforms while improving monitoring, data freshness, performance, security, and scalability. Partner with product, infrastructure, and data engineering teams to expand the integration platform and onboard new sources in a cloud-native, multi-tenant environment.

Contribute to designing, training, testing, and deploying machine learning models and production pipelines. Collaborate with product managers, data scientists, and ML engineers to solve business problems, analyze data, communicate findings, and participate in code and specification reviews. The intern will apply research papers in working code, build efficient ML workflows, and develop high-quality software in a collaborative environment.

Backend software engineering intern responsible for owning projects, writing and improving code, testing for reliability, participating in code reviews, and supporting continuous integration and deployment. The role requires strong computer science fundamentals, database experience, real-time technology problem-solving, and potential mobile development experience. The internship is based in Toronto during Summer 2027 with a hybrid in-office schedule.

Software Engineer Intern working on full-stack, user-facing Lyft products. Responsibilities include developing and refactoring code, writing unit, integration, and load tests, participating in code reviews, and supporting continuous integration and deployment. Candidates should have web development experience with Python, JavaScript, React, TypeScript, databases, testing tools, browser technologies, and Git. The internship is based in Toronto during Summer 2027 on a hybrid schedule.

Own the architecture, development, reliability, security, and production readiness of QuestBank’s domestic and international money movement platform. Lead AI agent squads, design distributed payment systems, integrate Canadian and global payment rails, implement ledgering and reconciliation, and ensure compliance, observability, disaster recovery, and controls. Partner with product, operations, risk, treasury, and fraud teams while reviewing human- and agent-generated code and resolving technical incidents.

Owns the end-to-end design, implementation, rollout, and iteration of backend APIs and platform systems supporting customer entitlements, policies, onboarding, and integrations. Provides technical leadership and mentorship, collaborates across engineering teams, extends AI-powered customer experiences, and helps prioritize and deliver product roadmap outcomes.

Own and expand Wagmo’s AI-powered claims automation pipeline. The Senior Software Engineer will improve model routing, reduce processing costs, increase automation accuracy, modularize and evaluate pipeline stages, and ship production AI features that support real financial claims decisions. The role requires strong Python skills, experience with production LLM systems, system refactoring, model-cost tradeoffs, and close collaboration with Product.

Build and own full-stack, cloud-native services and web frontends on AWS for radiology workflow solutions. Responsibilities include architecture, microservices development, automated testing, CI/CD, observability, security, healthcare standards compliance, production support, and mentoring developers. The role partners with Product, UX, and Clinical teams to deliver reliable software in a regulated healthcare environment.

Design, build, and operate a unified data platform: ingesting, processing, and exposing large volumes of data. Develop scalable ingestion pipelines, storage layers, observability, SLIs/SLOs, multi-tenant models, and metadata/ governance to enable secure cross-product data access and migrations from legacy systems.

As a Product Engineer at Bree, you will build full-stack features using a TypeScript/Node serverless stack and React Native, focusing on delivering value quickly and iteratively. You’ll collaborate closely with design and product teams to enhance customer outcomes while managing engineering tradeoffs effectively.