senior backend software engineer python jobs in Toronto

Build secure, scalable backend infrastructure at LotusFlare, using distributed systems expertise to support millions of concurrent API calls globally. As a Senior Backend Engineer, you will develop, secure, and scale mission-critical systems for LotusFlare’s DNO Cloud platform. You will own software from development through production maintenance, while...

We free everyone to safely use any technology, anywhere, on any device or app. Our flexible and neutral products, Okta Platform and Auth0 Platform, provide secure access, authentication, and automation, placing identity at the core of business security and growth. Writing maintainable, efficient code using proven patterns to solve complex problems Lead...

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...

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...

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...

Stikeman Elliott is building its own agentic AI platform, with production agents working alongside lawyers on the firm's matters. Built on the Claude Agent SDK and integrated with the firm's systems of record through MCP tool servers, the platform is already in daily use and continues to expand. This is the senior engineering role responsible for advancing...

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...

About CircleCI Engineering CI/CD has been solved. Now it’s being reinvented. AI agents don’t just run pipelines. They write code, trigger builds, interpret failures, and propose fixes. The interfaces that developers use to understand and trust that work don’t exist yet. We’re building them. At CircleCI, our guiding principles aren’t posters on a...

ROLE: SENIOR SOFTWARE ENGINEER TEAM: PRODUCT LOCATION: TORONTO (HYBRID) COMPANY OVERVIEW Salt is a North American marketing agency that creates connected experiences through creative, digital & media innovation. Our mission is to "Earn The World's Attention" and Salt is built to find, develop, execute, and amplify the ideas that are worthy of our clients'...

BettingJobs is hiring a Senior Software Engineer a global leader in online gaming, to join a new backend engineering team in Toronto. Responsibilities: Design, develop, and maintain high-performance .NET backend services Build and manage real-time data pipelines and integrations. Extend legacy systems to ensure stability and backward compatibility. Diagnose...

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...

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...

Forma.ai is seeking a Senior Staff Backend Engineer to own backend architecture across multiple domains, influencing design and data models for enterprise-grade workflows. You will lead complex initiatives, ship high-impact systems, and mentor engineers while collaborating with Product and Analytics teams. The role emphasizes ownership, cross-team...

Build scalable bioinformatics solutions with Python and cloud workflows in a hybrid Senior Bioinformatics Engineer role in Toronto, Ontario. Apply software engineering to biological and clinical data. Agilus by Synergie is recruiting an experienced Senior Bioinformatics Engineer for Health Sciences. The role connects software engineering, data science, and...

Join our Manulife Integration Engineering team and help build the next generation of enterprise integration solutions. As a Senior MuleSoft Software Engineer, you will design, develop, and support scalable, secure, and resilient integration platforms that connect enterprise applications, Salesforce, cloud services, and external partners. Leveraging MuleSoft,...

Why Harvey At 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...

We’re building a relationship-oriented bank for the modern world. We need talented, passionate professionals who are dedicated to doing what’s right for our clients. At CIBC, we embrace your strengths and your ambitions, so you are empowered at work. Our team members have what they need to make a meaningful impact and are truly valued for who they are...

Who We Are Toast creates technology to help restaurants and local businesses succeed in a digital world, helping business owners operate, increase sales, engage customers, and keep employees happy. Are you bready* for a change? Toast is looking for a Senior Software engineer to join our enterprise quick service restaurant team. You will get to work across...