Top Software Engineer Jobs in Montreal

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 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 Software Engineer, you will design and build backend services and integrations for financial operations, focusing on scalable technology solutions and AI enablement, while collaborating with cross-functional teams to ensure compliance and data integrity.

The Software Engineer II will ship features to enhance Affirm's marketplace, supporting product development and collaborating with design and analytics teams while ensuring operational stability.

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

As a Software Engineer II, you'll implement critical features, collaborate with teams, maintain full stack systems, and ensure high-quality code in a dynamic environment.

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

The Senior Infrastructure Software Engineer will build and manage a scalable, in-house search platform, ensuring seamless user experiences and expanding capabilities for a global user base.

The Senior Infrastructure Software Engineer will re-architect Identity systems, focusing on large-scale distributed systems design, API design, and collaborate with teams to implement wide-ranging use cases while mentoring junior engineers.

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 develop real-time content technology and internal tools using Unreal Engine for cutting-edge AR experiences in sports.

Own and evolve Directive's web surfaces for Stratos and company sites: build campaign and reporting UIs, integrate ad/CRM APIs, manage background jobs, containers, CI/CD, databases, telemetry, auth, and LLM integrations; stabilize inherited code and ship production features iteratively.

Provide DB2 and/or Sybase database administration and development, including replication, performance tuning, index design, MQT/MDC, partitioning, and data migration. Use scripting (UNIX/Perl), collaborate with teams, and troubleshoot performance. Preferred knowledge includes HA/DR, load balancers, data modeling, version control (Perforce), and ETL tools like Informatica.

Design, implement, and maintain scalable backend services and APIs (REST/gRPC); support production systems; improve processes and technology; participate in design reviews, documentation, user story creation, and cross-team collaboration to deliver high-quality, maintainable code.

The Software Engineer will validate and verify flight control systems software, perform testing in alignment with DO-178C standards, and contribute to process improvements.

Seeking a Software Engineer/Senior Software Engineer to design, develop, and deliver quality backend services and APIs using Go, with emphasis on Kubernetes and cloud services.

Design, implement, test and deploy backend services on AWS. Build RESTful APIs in C#, model data in MySQL and DynamoDB, use microservices and Docker, follow Agile/Scrum, participate in CI/CD and peer code reviews to deliver production-ready features.

Design and implement a high-frequency trading platform, optimize for latency, develop market data systems, and create analysis tools.

Lead development of core client systems and engine-level infrastructure in Unity/C#. Diagnose and fix cross-cutting performance issues, upgrade third-party SDKs, evolve build tooling, produce design docs, scope multi-week infrastructure initiatives, mentor engineers, and drive profiling, optimization, and architecture changes to enable future features.

Lead technical strategy and architecture for Coinbase Payments: design and evolve high‑availability, low‑latency funds‑flow and rails systems, drive cross‑team initiatives and reliability improvements, enforce financial correctness, mentor senior engineers, and align stakeholders across product, risk, and compliance.

Lead design and implementation of Affirm's Lakehouse Platform (Iceberg, Spark, Snowflake). Define technical strategy, enable secure governed access, improve analytics engineering practices, optimize performance and cost, operate at scale, mentor engineers, and collaborate cross-functionally to deliver reliable, discoverable, and cost-efficient analytical data infrastructure.

Lead architecture and implementation of routing, dispatch, and real-time tracking systems. Design scalable backend services and APIs, integrate with TMS/ERP systems, build dispatcher web interfaces, mentor engineers, and collaborate with product, design, and mobile teams to deliver fleet optimization features at scale.

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.

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