Top Software Engineer Jobs in Toronto

The Software Engineer at Lyft will innovate user solutions, lead features, and collaborate with cross-functional teams to improve ride and driver experiences using Python, Golang, and AWS.

The Principal Software Developer leads Salesforce solutions design and development, ensuring alignment with enterprise architecture and advocating for best practices in technical standards and integration.

As a Software Developer at Xanadu, you will design visualization interfaces, maintain a Python backend, and optimize performance for quantum computing tools while collaborating with diverse teams.

Develop and optimize quantum compilation and Quantum Error Correction software to bridge high-level logical abstractions and hardware control. Translate QEC research into production-grade Python and C++ implementations, integrate with compilation IRs and control system APIs, collaborate across hardware and research teams, and maintain high standards for testing, documentation, and CI/CD.

Lead design, development and maintenance of multi-tier web and mobile applications, ensuring AODA accessibility, security and privacy (health context). Build Azure-based services, microservices, CI/CD DevSecOps pipelines, database solutions (MS SQL), ETL/ELT data integrations, and automated testing. Produce architecture artifacts, documentation, support UAT/defect resolution, and follow Agile and public-sector project standards.

Designs, develops, tests, and maintains software across the SDLC. Translates user requirements into technical specs, implements code, ensures security, logging, and performance standards, supports integrations, evaluates new technologies, follows release/version control processes, and troubleshoots production issues.

Build and scale the signup and onboarding experience using React and Node.js, run A/B experiments, develop third-party integration entry points, collaborate with Product/Design/Data Analytics, maintain full-stack features, and participate in on-call rotation to ensure a reliable production environment.

Senior full‑stack developer to design, build, test, and support React frontends and Java/Spring Boot backends for virtual care. Integrate Pexip and Zoom video platforms, implement HL7v2 and FHIR interfaces, NetIQ/IAM workflows, scheduling and clinical workflows, and support OpenSearch, testing, documentation, and production deployments in a secure, auditable healthcare environment.

Design, build, and maintain high-performance modular features for eBay's core iOS app. Collaborate with product, design, backend and analytics teams, integrate APIs (including GraphQL), manage app state, ensure performance and stability, write tests, participate in Agile processes, and contribute to CI/CD and code reviews.

Design, implement, test and deploy Dynamics 365 CE configurations, customizations, and integrations. Support data flows, CI/CD, testing, deployments, troubleshooting, documentation and post‑go‑live stabilization across enterprise systems.

Architect and implement multi-tenant, cloud-native networking and security solutions across public, private, and hybrid clouds. Build high-performance traffic steering, policy orchestration, telemetry/analytics, and cost-optimized egress/gateway systems. Hands-on coding, code review, and technical leadership for Go and PHP backend networking components and fast-path dataplane technologies.

Frontend-focused full-stack developer responsible for implementing React components and state, integrating with Go services and Python data pipelines, participating in design and code reviews, leveraging AI tools to accelerate development and tests, following TDD and security-driven practices, and contributing to system architecture and maintenance.

As a Staff Software Engineer on the Cash App Banking team, you will lead technical strategy, collaborate on decisions, manage large features, and mentor other engineers to enhance their skills in creating innovative banking solutions.

Build and maintain core map data ingestion, conflation, and quality infrastructure to improve ETA accuracy and pickup precision. Lead features end-to-end, collaborate with cross-functional teams, write well-tested backend code, operate distributed systems, and participate in on-call rotations and knowledge sharing.

Test and validate AI models and software for automotive use cases: generate ground truth, build annotated datasets and testing frameworks, evaluate technologies, support R&D engineers, coordinate projects and outsourced work, and collaborate with internal and external partners to drive innovation and product readiness.

Design, build, and operate secure, resilient distributed systems for secrets and key management across Cloudflare's global network. Re-architect and strengthen internal PKI and machine/workload identity, support and run services (including on-call), and consult with teams to ensure secure system design and usage.

The Senior Software Engineer will design, develop, and maintain scalable backend systems for Toast's Scheduling product, ensuring quality and reliability. Responsibilities include code ownership, mentoring team members, and collaborating with product and design teams.

The Staff Software Engineer will lead technical strategies for the Cash App Banking team, overseeing architectural decisions, mentoring engineers, and developing financial products that improve customer banking experiences.

Design, build, and maintain React Native mobile foundations, SDKs, and CI/build tooling for an internal developer platform. Integrate AI-native workflows, raise engineering standards, and collaborate across platform and product teams to accelerate mobile feature delivery.

Develop end-to-end Android infotainment features with emphasis on Apple CarPlay and Android Auto. Design, prototype, test in vehicles, debug issues, review code, and collaborate in Agile teams to deliver customer-facing software used by millions.

Build end-to-end software for an automated wire-harness factory: instant quoting, data models for harnesses, production/MES systems, integrations with machines and test equipment, and data pipelines to keep quoting, production, inventory, and procurement in sync. Ship full-stack features, work with production and customers, and own quality and reliability.

Build and maintain scalable integration and end-to-end test automation frameworks and CI pipelines. Optimize test execution, improve stability and reporting, support engineering teams with triage and best practices, write technical specs/ADRs, participate in on-call rotation, and collaborate across regions to evolve the companys test strategy and developer productivity tooling.

The role involves leading engineering decisions, actively shipping code, participating in product discussions, and maintaining app architecture for Speechify's iOS app.

The Software Engineer for Data Infrastructure & Acquisition will manage data collection for model training, optimize ingestion pipelines on GCP, and collaborate with the AI team to enhance data quality and scalability.

Design, build, deploy, and maintain scalable backend features and APIs for enterprise restaurant products. Lead complex projects, ensure quality with automated testing, monitor rollouts, collaborate with UX/PM, mentor engineers, and partner across teams to improve functionality and reliability for customers.