senior backend software engineer python jobs in Toronto

Platform Engineering is the department within SRE that is responsible for a range of critical infrastructure and operational functions that support the broader engineering organization. Among these are our multi-cloud-provider Kubernetes infrastructure, networking, load balancing (including our public-facing edge and internal service mesh), and observability...

161 Bay Street (93021), Canada, Toronto,Toronto, Ontario,Senior Staff Software Engineer About Capital One Canada. For 30 years, we’ve been on a mission to change banking for good. We challenge the traditional bank stereotype by integrating machine learning, conversational AI and design thinking into our core operations. We’re a bank a tech company would...

Stikeman Elliott is building its own agentic AI platform, with production agents working alongside lawyers on the firm’s matters. This is the senior engineering role responsible for advancing its development. You will design, build and deploy the firm’s AI applications end to end, including production agentic systems, MCP servers that connect to...

Senior Siebel Software Developer needed onsite in Toronto, Ontario, bringing deep configuration, integration, and development expertise to provincial systems. This full time, four month contract focuses on Siebel architecture, development, and integrations. You will support Agency products, Provincial system integrations, network security initiatives, and...

Why HarveyAt Harvey, we’re transforming how legal and professional services operate. By combining frontier agentic AI, an enterprise-grade platform, and deep domain expertise, we’re reshaping how critical knowledge work gets done for decades to come.This is a rare chance to help build a generational company at a true inflection point. We have strong...

Staff Software Engineer, Backend About Stream Stream powers real-time Chat, Video, Activity Feeds, and AI Moderation for more than 1 billion end users across 4,000+ apps, from Strava and Bumble to eBay and Patreon. Our platform processes billions of API requests per month and supports applications with millions of concurrent users, while delivering highly...

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, highly available, and global infrastructure that is shared across multiple financial products. Ensuring that our...

Elevate your software engineering career with ZoomInfo as a Senior Software Engineer. Design and build innovative solutions leveraging AI to address complex business challenges for diverse teams. As a Senior Software Engineer, you will be key in developing maintainable systems and translating business needs into effective applications. You'll investigate...

Justworks in Toronto, Canada is seeking a Senior Software Engineer to own large-scale projects from discovery through launch, delivering measurable customer impact. You will collaborate with product and design teams to craft scalable solutions and drive robust testing, monitoring and deployment practices. You will improve performance and reliability of...

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. 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,...

A financial technology firm is seeking a Senior Software Engineer skilled in Python and Rust. This role involves engaging with stakeholders, implementing AWS solutions, and designing data models for financial products. The ideal candidate holds a Bachelor's degree in a related field and possesses experience in modern programming languages and databases....

Build enterprise banking software with Java and Spring Boot in a hybrid Downtown Toronto engineering team. Apply backend expertise across scalable solutions. This Java Software Engineer role requires five-plus years of experience and focuses primarily on backend development. You will work with Java, Spring Boot, microservices, PostgreSQL, Docker, and cloud...

Build Authentication as a Service at eBay with Java, Spring Boot, REST, and cloud infrastructure expertise. Work on scalable backend systems. As a Senior Software Engineer, you will develop production-grade backend services for authentication workflows. You will shape architecture, infrastructure, and deployment foundations for a reusable platform extending...

Relay is a digital banking platform that gives self-made business owners the tools and know-how to be great with money—bringing clarity, confidence, and control to every dollar earned, so they can turn hard work into lasting success. We do this by replacing financial guesswork with real visibility, transforming cash flow from a constant source of stress...

About PocketHealth Burnout, staffing shortages, chronic underfunding — healthcare is under more strain than it has ever been. A disproportionate share of available resources never reach patients; they're consumed by the administrative layer that sits between a provider and the care they deliver. PocketHealth exists to change that. Our flagship imaging...

About the team: As a Senior Software Engineer on our Provider team, you will have the opportunity to apply your Full Stack expertise towards building the next generation of our core infrastructure that will enable thousands of hospitals and clinics — and empower millions of patients — to discover a better healthcare experience. You’ll be joining an...

About Four Seasons Four Seasons is powered by our people. Our team members around the world create amazing experiences for our guests, residents, and partners through a commitment to luxury with genuine heart. We know that the best way to enable our people to deliver these exceptional guest experiences is through a world-class employee experience and...

Join us in building the future of finance. Our mission is to democratize finance for all. An estimated $124 trillion of assets will be inherited by younger generations in the next two decades. The largest transfer of wealth in human history. If you’re ready to be at the epicenter of this historic cultural and financial shift, keep reading. About the...

At BuildOps, we’re building a groundbreaking software solution, purpose-built to support today’s commercial contractor. From helping our customers to manage their service all the way to project management, we’re breaking the mold and building a team that invests in our mission statement. We love driven, self-motivated folks that thrive in fast-paced...

About us:Based in Toronto, Crescendo Technology is a research and IT firm providing software, research, and technical services to blue-chip clients in the online entertainment space. We work with global partners to deliver the highest level of technological support for our customers and their customers.Job Purpose:You’ll build the backend engines that...