Top Software Engineer Jobs in Montreal

Design, develop, test, deploy, monitor, and improve backend services and customer experiences for Expedia’s Home & Navigation team. Responsibilities include low-level system and API design, data modeling, service integrations, operational reliability, incident resolution, metrics-driven optimization, and responsible integration of AI/ML capabilities. The role collaborates with product, design, and engineering teams to deliver scalable, secure, maintainable, and highly observable services.

Develop and deploy slot-game features in Unity and C#, including gameplay, UI/UX, engine systems, and creator tools. Build server-backend functionality, investigate and extend slot-engine systems, define technical tasks, and quickly resolve bugs. The role requires collaboration, strong communication, and delivery under deadlines, with opportunities to work on live mobile games and performance optimization.

Build and ship full-stack web and mobile experiences across Affirm’s consumer products. Responsibilities include breaking projects into tasks, collaborating with product, design, and analytics teams, developing scalable APIs, writing tested and extensible code, monitoring service metrics, supporting on-call operations, debugging, conducting code reviews, and participating in team development and interviews.

Build and maintain React Native foundations and tooling for an internal mobile developer platform. Integrate AI-native workflows, consolidate SDKs, CI pipelines, build tools, and reusable components, raise engineering standards, and collaborate with platform and product teams to accelerate mobile feature delivery.

Build and improve MongoDB’s distributed networking and observability systems. Responsibilities include enhancing networking performance, availability, scalability, resource efficiency, and low-overhead observability; leading medium-sized projects from technical design through delivery; collaborating across the project lifecycle; contributing production C++ code; and participating in code reviews and feature design.

Lead the Android platform for Cash App Consumer Platform, building foundational infrastructure, shared libraries, architecture patterns, observability, performance tooling, and developer experiences used across the organization. Drive AI-native engineering practices and tools, identify cross-cutting technical problems, lead architecture reviews, mentor engineers, and collaborate across Android, iOS, web, backend, product, and design teams.

Build and own foundational Android platform infrastructure, shared libraries, frameworks, architecture, observability, performance tooling, and developer experience systems. Lead AI-native engineering practices, evaluate AI development tools, drive cross-organizational technical initiatives, mentor engineers, and establish scalable Android standards. Collaborate across mobile, web, backend, product, design, and leadership teams to improve engineering velocity and customer experiences.

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.

Develop and maintain a low-latency, high-performance game streaming application across multiple platforms. Responsibilities include UI, video encoding and decoding, networking, input devices, video rendering, UDP protocols, and production C development. The role involves solving complex performance challenges, deploying code to millions of users, collaborating with a globally distributed team, mentoring engineers, and responding to customer needs.

Provides technical leadership for Expedia Group’s content platforms, defining backend and full-stack architecture for scalable content acquisition, enrichment, curation, and delivery. Designs AWS cloud-native systems, REST and gRPC APIs, data models, and distributed services. Establishes engineering standards for testing, deployment, reliability, observability, and operational excellence across multiple teams. Guides cross-functional architecture decisions and the safe production integration of AI and machine learning capabilities. Requires 10+ years of experience and French-English bilingualism.

Design, implement, and maintain partner integrations and solutions; translate partner requirements into scalable technical implementations; troubleshoot and resolve issues; drive onboarding and steady-state maintenance; collaborate across product, engineering, and partner teams to improve tools and partner experiences.

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.

Develops and supports complex web applications for TD Insurance’s MyInsurance platform. Responsibilities include analyzing requirements, designing and coding Java/Spring Boot solutions, testing, troubleshooting, application administration, performance monitoring, incident management, and production support. Collaborates with analysts, designers, developers, and business stakeholders while contributing to project planning, security practices, continuous delivery, and technical standards. Acts as a senior or lead developer, subject matter expert, consultant, and coach for team members.

Design, build, and operate services powering card issuance, transaction authorization, wallet provisioning, 3-D Secure, and disputes. Own features end-to-end within a microservice, event-driven architecture, write well-tested code, participate in reviews, and perform operational ownership including on-call and incident response. Leverage AI developer tools to improve velocity and quality.

Build and operate high-throughput backend services powering AI agent orchestration, connector integrations, and real-time data pipelines. Design core platform services, infrastructure-as-code, CI/CD, and scalable APIs. Collaborate with ML, frontend, and product teams to ship AI-powered features, mentor junior engineers, and maintain high availability for consumer and enterprise customers.

Design, build, test, ship, and operate services powering card issuance, transaction processing, and disputes. Own features end-to-end within a microservice and event-driven architecture, write well-tested code, participate in on-call incident response, and leverage AI tools to improve development velocity and quality while collaborating with cross-functional teams.

Develop and maintain full-stack web application features, microservices, APIs, and front-end components using .NET Core, C#, TypeScript, Angular, and React. Design scalable solutions, apply OWASP and CWE/SANS Top 25 security practices, navigate complex business rules, critically evaluate AI-generated code, create unit tests, and collaborate with product and QA teams. Document code in French and work bilingually in French and English.

Lead the technical vision and architecture of Coinbase’s FinHub financial infrastructure, including ledger, account balances, money movement, settlements, transfers, and transaction history. Drive distributed-system rearchitecture with double-entry accounting, idempotency, reconciliation, auditability, and resilient failure recovery. Lead cross-team initiatives, migrations, and technical strategy while partnering with product, finance, risk, compliance, and operations stakeholders. Mentor senior engineers and promote operational excellence and maintainability.

Develop and evolve Lyft’s backend platform for Bikes and Scooters across markets and business models. Responsibilities include defining architecture and roadmaps, writing maintainable and tested code, leading projects, participating in code reviews, resolving incidents, documenting designs, collaborating across teams, and promoting engineering best practices.

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

Build and operate Android rider experiences for bike-share and scooter-share platforms. Responsibilities include designing, developing, testing, deploying, monitoring, and maintaining software; participating in on-call support, incident response, code reviews, technical documentation, and reliability improvements. Collaborate with product, design, data science, analytics, operations, TPM, and QA teams while contributing to automation, technical debt reduction, knowledge sharing, and engineering best practices.

Own the architecture and technical strategy for Square’s go-to-market technology stack. Build and operate production AI agents, automated workflows, and integrations that improve sales productivity. Lead complex technical initiatives, establish AI reliability and security guardrails, define evaluation metrics, and guide build-versus-buy decisions. Partner with Sales, Product, Data, and Engineering leaders while mentoring engineers and remaining hands-on across design, implementation, testing, deployment, and operations.

Develop and maintain business-logic-intensive features for Velixo’s ERP reporting solutions. Responsibilities include translating user stories into technical designs, implementing and debugging code, writing unit and integration tests, maintaining technical debt, conducting code reviews, and supporting CI/CD pipelines. The role involves primarily TypeScript and C# development, occasional server administration, and close collaboration with stakeholders to deliver customer-focused solutions.

Develop and maintain production-grade Java software, writing clean, testable code and end-to-end tests. Build REST APIs, document integrations, conduct code reviews, and support systems after launch. Independently own simple projects while collaborating with senior engineers and cross-functional teams. The role requires experience with Java frameworks, web technologies, databases, containers, orchestration platforms, messaging systems, and automated testing.

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.