Top Software Engineer Jobs in Montreal

Design, build, and operate full-stack content services and UIs for a large-scale content platform. Own end-to-end features, implement maintainable code, apply data-driven improvements, and safely integrate AI/ML capabilities while collaborating across domains in a DevOps environment.

Design, implement, and maintain scalable backend services and APIs for Expedia's content/catalog platform. Collaborate with product and partner teams, integrate upstream/downstream systems, operate and monitor services in production, and safely integrate AI/ML-enabled solutions to improve content quality and automation.

Design, build, and scale backend services and APIs for Expedia's Content Platform. Implement data models and API contracts, write testable code, improve observability and reliability, debug production issues, participate in on-call rotations, mentor peers, and safely integrate AI/ML-enabled solutions to improve content quality and automation.

Senior backend developer responsible for designing and implementing scalable, high-quality REST and gRPC services, improving processes and technologies, supporting production systems, and collaborating with product and senior engineers to deliver distributed platform solutions for partner connectivity.

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.

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.

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.

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.

Build and evolve Circle Discover marketplace features: high-converting purchasing flows, algorithmic recommendations, content feeds, and listings. Work across a Ruby on Rails backend and React/Next.js front-ends, optimize performance and SSR/SSG, collaborate with designers and leaders, and improve codebase quality while shipping at pace in a distributed remote team.

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, 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.

Build and extend smart contracts and backend services for issuance, minting, burning, reserve accounting, and rewards for custom USDC-backed stablecoins. Implement onboarding, reporting, monitoring, and internal tooling, collaborate with cross-functional teams, and write well-tested production code across backend and on-chain surfaces.

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

Own delivery of market data projects from technical scoping through migration and production. Coordinate with developers, vendors, exchanges, and stakeholders; write technical documentation and runbooks; manage Jira kanban, report progress, and act as SME for market data products.

The Software Developer will design optimization software, develop features, analyze algorithms, and collaborate with R&D teams to enhance product quality.

Participate as a Quantitative Technology Services co-op developing and testing applications: translate business requirements, design and code features, perform code reviews, integration testing, release and incident management, and support project work and daily operations.

Develop and maintain TypeScript/React front-ends, GraphQL APIs and Python/Django backends, and on-robot Python services. Integrate LLM/AI pipelines (TTS/STT, RAG), optimize latency and robustness, debug across UI/API/robot layers, and collaborate with cross-functional teams while mentoring junior developers.

As a Staff Software Engineer, you will lead technical strategies, drive architectural decisions, mentor engineers, and develop consumer banking solutions using various technologies.

Lead and deliver your team's quarterly goals, guide engineers through ambiguous problems, and collaborate with product, design, and analytics. Identify and resolve technical, process, and operational issues, support availability and on-call, enforce code and design quality, and mentor team members to grow talent and maintain high engineering standards.

Design, build, and operate scalable, high-performance software for real-time financial data feeds. Lead architecture discussions, collaborate with operations, ensure data quality, research technologies, and drive end-to-end projects.

Design, prototype, and productionize research-driven systems that apply LLMs and agentic harnesses to event-driven market and telemetry data. Build and operate low-latency, data-intensive infrastructure, instrumenting performance end-to-end, running quick Python/Jupyter analyses, and converting successful POCs into robust production services while collaborating with operations and stakeholders.

Build and maintain cloud-native services, APIs, and platform capabilities. Design, implement, test, and troubleshoot scalable SaaS/backend systems. Collaborate with product, UX, and engineering teams, participate in code reviews, agile delivery, and continuous learning.