Top Software Engineer Jobs in Montreal

Design, build, and maintain highly scalable backend services and APIs for Expedia's content platform. Deliver robust low‑level designs, data models, and well‑tested code; own operational health, observability, and incident response; collaborate with product and cross‑functional teams; and safely integrate AI/ML capabilities to improve content quality and automation.

Design, build, and operate full-stack services and UIs for Expedia Group's content platform. Own end-to-end feature delivery, implement maintainable code, design APIs and data models, apply data-driven improvements, and safely integrate AI/ML solutions while following testing, CI/CD, observability, and operational standards.

You will design, develop, and launch backend systems, APIs, and collaborate with cross-functional teams to support product development and operations.

Design, build, and maintain full‑stack services and UIs for Expedia's content platform. Own end‑to‑end feature delivery, API and data modeling, performance and observability, and safely integrate AI/ML capabilities. Collaborate across teams in a DevOps, agile environment.

Design, build, test, and operate backend services and APIs for Expedia's content platform. Collaborate with product and partner teams, ensure observability, reliability, and security, and safely integrate AI/ML capabilities to improve content quality and automation.

Lead design, implementation, and operation of full-stack, customer-facing web experiences (Browse, Navigate, Preview). Drive architecture, tradeoffs, observability, testing, and on-call readiness. Partner with Product, Design, Data, Infrastructure, and platform teams, use approved AI tools responsibly, and own multi-phase rollouts, measurement, and cross-team alignment.

Build and operate ingestion, reconciliation, and reporting systems that reconcile card-network and partner settlement files against internal transactions. Deliver end-to-end features for traceability, accounting journals, tax and regulatory reporting, and compliance tooling while ensuring reliability, scalability, and data privacy.

Design, build, and maintain backend services for fraud and risk detection at scale. Deliver features end-to-end, partner with Data Science/ML, improve reliability and observability, respond to incidents, and build reusable systems to reduce financial loss and protect users.

Build and maintain backend systems for money movement and card ledger features. Design, develop, and launch scalable APIs and services (Python or Kotlin) using AWS, MySQL, and Kubernetes. Collaborate with product, design, data science, and cross-functional teams, support operations and on-call, create and monitor metrics, participate in code reviews and hiring, and deliver well-tested, extensible solutions.

The Software Engineer will enhance Lending products for Cash App, focusing on building complex systems, APIs, and collaborating with multiple teams to support economic empowerment through accessible credit.

As a Staff Fullstack Software Engineer, you'll optimize user monetization systems at Dropbox, leading technical strategies for checkout and subscriptions while mentoring engineers.

Design and implement new front-end and back-end features, maintain existing functionality, write testable code with TDD, build REST APIs, work with AWS (CloudFormation, ECS) and SQL, follow SOLID principles and agile practices, and participate in sprint-based, collaborative R&D.

Develop and maintain modern microservices using C#, ASP.NET, and NoSQL databases. Involve in CI/CD processes and contribute to full-stack development within a collaborative team.

Develop and maintain web application features using C#/ASP.NET Core and TypeScript/Angular. Diagnose and fix bugs, resolve production issues, write automated tests, improve architecture, performance and maintainability, and collaborate with QA and UX teams. Participate in continuous improvement of team practices and complete a foundational programming course during the first year.

The role involves leading software projects, collaborating with teams, contributing to R&D, and ensuring quality control in software solutions.

Design, develop and maintain Java backend systems (document management group). Lead small development initiatives, implement event-driven solutions (Kafka), build and run automated tests, support production troubleshooting, follow DevSecOps practices, collaborate with users across project phases, and work in Agile/Scrum. Use AI tools effectively in development lifecycle and participate in deliveries and post-release support.

The role involves designing, developing, and maintaining backend services and APIs, collaborating on solutions for enterprise clients, and optimizing performance.

Seeking a Senior iOS Engineer to enhance the iOS app, lead engineering and product decisions, and maintain app architecture within a fast-paced environment.

The Software Engineer will manage data collection for model training, enhance cloud infrastructure on GCP, and collaborate with the AI team to optimize data processing and delivery.

Lead design and build of a real-time observability and root-cause analysis system for high-density GPU fabrics. Collect, reduce, correlate telemetry from switches, hosts, NICs, GPUs, and services; model topology and ownership; separate fabric faults from host/driver/RDMA/scheduler issues; and produce operator workflows for triage and remediation.

Develop and implement middleware for intelligent environment devices, collaborate with teams, design and test software modules, investigate new technologies, and ensure implementation meets design objectives.

Develop and deploy new features, handle legacy architecture, work with Node.js and TypeScript, and scale to millions of customers for a wireless communication startup.

Looking for a Software Engineer to build financial products and tooling for Cash App's Lending team, ensuring quality and compliance while collaborating across domains.

Develop, launch, and maintain backend systems for card issuing and transaction processing. Break down projects, collaborate with product/design/analytics, write clear well-tested code, support operations and on-call duties, create/monitor metrics, perform code reviews, and participate in hiring and team growth activities.

The Senior Software Engineer will build route planning and tracking systems, develop web applications, and create APIs for logistics and dispatch operations.