senior backend software engineer python jobs in Montreal

About TuringTuring is one of the world’s leading AGI infrastructure companies, working with frontier AI labs to accelerate model development through high-quality training data, evaluations, and engineering talent.About the RoleWe’re looking for experienced, hands-on software engineers to help evaluate and improve AI coding models.Rather than primarily...

Affirm’s engineering team is building large-scale, fault-tolerant, global infrastructure shared across multiple financial products, merchants, and vendors. Making this infrastructure transparently available to all engineers is critical to the business. The engineering culture emphasizes blameless postmortems, detailed technical specifications, and...

At affirm, we exist for the moments that matter—giving people a clear, predictable way to pay over time, with no hidden fees, no surprises, and no tradeoffs on what matters most.Affirm's engineering team is building a large-scale, fault-tolerant, and global infrastructure that is shared across multiple financial products, merchants, and vendors. Ensuring...

Camunda is the enterprise platform for agentic orchestration, enabling organizations to coordinate AI agents, people, and systems across complex, end-to-end business processes. With built-in governance, auditability, and human oversight, Camunda gives enterprises the control they need to move AI from pilots to production – safely and at scale. Trusted by...

Camunda is the enterprise platform for agentic orchestration, enabling organizations to coordinate AI agents, people, and systems across complex, end-to-end business processes. With built-in governance, auditability, and human oversight, Camunda gives enterprises the control they need to move AI from pilots to production — safely and at scale. Trusted by...

The Data and Storage Services team is responsible for affirm’s data infrastructure across OLTP and OLAP systems, spanning critical online checkout databases, batch orchestration, streaming infrastructure, event-driven frameworks, BI, analytics tooling, large-scale data platforms, and agentic data tools such as semantic layers and internal platform data...

Who we are: Sardine is the leading agentic risk platform for fighting financial crime. Our integrated solution unifies data across risk teams to help organizations stop fraud in real time, prevent AI-driven attacks, and automate fraud and AML operations. Sardine’s platform is strengthened by one of the fastest-growing fraud consortiums in the market,...

Upsun seeks a Backend Software Engineer to enhance our billing systems. Focus on backend service development in Go for complex billing integrations and ensure accuracy in customer invoicing. In this role, you will build and maintain the backend services for our billing platform. Your expertise will drive projects that handle revenue across multiple...

The Streaming team at Affirm is responsible for all things data and drives the strategy for event driven architecture, stream processing, data exploration, discovery and validationWe leverage existing open source technologies like Kafka, Flink, Schema registry and also build our own as neededAs a member of our team you would spend time identifying and...

OverviewTucows is a remote-first backend engineering role for Canada, building open‑internet products across domains, Ting, and Wavelo.ResponsibilitiesDesign and develop secure, scalable, reliable, and efficient backend services using modern frameworks and tools.Collaborate with frontend developers to define clear and consistent API endpoints,...

Shape the future of search at Affid as a Backend Software Engineer. Leverage your expertise in Python or Kotlin to enhance consumer experiences in this remote role. Affid is seeking a seasoned Backend Software Engineer with 8+ years in building scalable systems. This role involves setting technical strategies, collaborating across product development teams,...

About Vasco Vasco is the revenue context layer for AI agents. The product was built around one idea: confident is not the same as correct, and revenue decisions get made on confidence all the time. We structure your CRM, billing, calls, and support data into a semantic layer where every metric is sourced, every definition is locked, and every answer is...

Dialogue is the #1 virtual care provider in Canada. By developing our Integrated Health Platform, we provide exceptional online health and wellness programs (primary care, mental health, iCBT, EAP, and wellness) to organizations that want to improve the wellness of their employees and families. When it comes to our work, we set the bar high. Together,...

OverviewWe're hiring a backend developer to join a dynamic and forward-thinking team focused on rebuilding and scaling a large-scale login and registration platform. If you're looking to work on meaningful systems that impact millions of users-and want to do it using a modern stack-you'll want to explore this role.High-impact system rebuild. Modern tech...

Telesat (Nasdaq and TSX: TSAT) is a leading global satellite operator, providing reliable and secure satellite-delivered communications solutions worldwide to broadcast, telecommunications, corporate and government customers for over 55 years. Backed by a legacy of engineering excellence, reliability and industry-leading customer service, Telesat has grown...

About Turing: Turing is one of the world's leading AGI infrastructure companies, working with frontier AI labs to accelerate model development through high-quality training data, evaluations, and engineering talent. About the Role: We're looking for a high-taste engineer with a strong eye for quality — someone who's worked hands-on with preference data...

Jeeves is looking for a Senior Backend Engineer to join our engineering team. You will design and build the backend systems that power Jeeves’s financial platform — working across payments, cards, spend management, and compliance infrastructure that serves businesses across the Americas and beyondDesign, build, and maintain scalable, reliable backend...

ABOUT YOUWe are looking for a Senior Backend Engineer who is detail-oriented, proactive, and highly collaborative to join our Engineering team. The best candidate will be someone who thrives in a fast-paced, highly collaborative, and exceptionally dynamic setting and is excited to design and build scalable backend systems, drive architectural improvements,...

## Senior Backend EngineerApply: Canada - Ontario: Canada - Remote: Full time: Posted 7 Days Ago: R66447**Job Summary:****Job Description:**BiblioCommons is a Toronto-based software company that builds SaaS solutions for public libraries. Our team is passionate about making public libraries accessible, delightful and engaging, while having fun at...

Advance your software development career from anywhere in Canada as a Senior Software Developer. Leverage your expertise in Java, Spring Boot, and Python APIs to create scalable services. We are looking for a Senior Software Developer who can design and develop robust backend services and RESTful APIs. The ideal candidate should have hands-on experience...