Jobs for senior python backend at Toronto

Step into the role of Senior Software Engineer at Backstory, focusing on backend development for the Matching team. This position integrates advanced data insights and scalable system architecture. You will be responsible for designing algorithms and managing data pipelines that power essential features of Backstory's products. This role demands a...

A payment technology leader is seeking a Senior Software Engineer to join their fully remote team. This role focuses primarily on backend development, maintaining and enhancing payment processing systems while collaborating with various teams. The ideal candidate should have over 5 years of software development experience, strong skills in API design and...

Xero seeks a Senior Backend Engineer to innovate and maintain scalable financial systems using C#, .NET, and Kubernetes in Toronto, CA. Help small businesses thrive with impactful technology solutions. In this role, you'll join Xero's Data-In organization, tasked with revolutionizing the management of financial documents. Your experience in backend...

Enhance your career as a Senior Software Engineer, AI in Toronto, focusing on backend solutions that empower LLM applications. Transform user data into actionable insights. In this prominent role, you will be instrumental in developing backend architectures that support LLM-driven functions and workflows. With an emphasis on retrieval systems and real-time...

Job Description We are looking for a hands‑on Senior Software Engineer to design, build, and operate scalable cloud‑native backend services and distributed applications. You will work primarily with Java, Spring Boot, AWS, and PostgreSQL, partnering with Product, Architecture, DevOps, Security, and other engineering teams to deliver reliable,...

Overview API Developer Responsibilities Design, develop, and maintain API interfaces Understand and analyze user requirements to ensure effective API design Write clean, readable and testable code Ensure API functionality and reliability through regular testing and troubleshooting Work with other software developers to ensure compatibility and...

Build something people love Wealthsimple is Canada’s leading financial innovator. The company offers a full suite of simple, sophisticated financial products across managed investing, do-it-yourself trading, cryptocurrency, tax filing, spending and saving. Wealthsimple currently serves more than 4 million Canadians and holds over $155 billion in assets...

Civil Engineer with Python Experience - Freelance AI Trainer Posted 3 days ago. Be among the first 25 applicants. Location requirement: Candidates must be currently residing in the specified country. Submit resume in English and indicate your level of English. At Mindrift, innovation meets opportunity. We believe in using the power of collective...

Meaningful technical impact – Build applications and services that directly support Fitch Ratings' analytical and operational workflows, used by teams across the organization. Innovation‑first culture and experimentation – Permission to challenge established patterns, explore emerging technologies including AI, and drive proof‑of‑concepts with...

Senior Backend Engineer, Crypto and Alternative Trading Products Posted Wednesday, August 19, 2026 at 4:00 AM Questrade Financial Group (QFG) , through its companies - Questrade, Questbank, Questrade Wealth Management, Community Trust Company, Zolo, and Flexiti, provides securities and foreign currency investment, professionally managed investment...

Pursue your passion at Appnovation as a Senior Full-Stack Developer specializing in AI design-to-development applications. Your role will ensure impactful digital solutions that drive future growth and innovation. You will harness your extensive experience (6+ years) in full-stack development to create advanced applications, emphasizing frontend development...

Affirm is building the next generation of CIAM backend services to power registration, authentication, and account lifecycle across B2C and B2B platforms. This hands-on engineering role emphasizes security, reliability, and scalable design in a remote-first environment across Canada. You will develop Python or Kotlin APIs, implement OAuth 2.0, OIDC, SAML,...

Job Description - Senior Consultant (CREQ257953) Job Description Senior Consultant - ( CREQ257953 ) Description Kinetica, Python, sql, Rest API, Design, develop, and maintain highly efficient and scalable data models within the Kinetica database to support complex analytical and forecasting requirements. Perform advanced performance tuning and...

Pursue your passion at Appnovation as a Senior Full-Stack Developer specializing in AI design-to-development applications. Your role will ensure impactful digital solutions that drive future growth and innovation. You will harness your extensive experience (6+ years) in full-stack development to create advanced applications, emphasizing frontend development...

Join MaintainX as a Senior Software Developer, focusing on backend solutions. Enhance our internal platform with your expertise in distributed systems and CI/CD practices. In this key role within the Backend team of the Platform Engineering division, you will support over 150 developers with efficient backend foundations and tooling. By integrating AI...

Join Kaseya as a Senior Platform Backend Engineer, focusing on developing event-driven systems using Go or Rust. Shape backend services that drive productivity across our platform. In this role, Kaseya is looking for a Senior Platform Backend Engineer to build and operate services that connect essential workflows and security mechanisms within the Kaseya...

## About the RoleAs a Senior Software Engineer, you will work closely with product owners, engineering teams, and technical leads on our next generation data feed platform. This role is primarily focused on building Python-based data pipelines and file-based data delivery systems on AWS. You'll also contribute to building web interfaces for monitoring and...

Your Role as a Platform Engineer at Ctrl Ctrl is looking for a Platform Engineer to help design, build, and operate the systems that power our products. This role sits at the intersection of platform engineering, distributed systems, and product development. We need someone who can build reliable cloud infrastructure and backend systems while remaining...

Armstrong Fluid Technology is a global leader in innovative fluid flow solutions. We are committed to engineering excellence and delivering high-quality products and services that drive efficiency and sustainability for our customers.We are seeking a highly skilled Enterprise Developer to join our enterprise architecture team. This role is ideal for a...

Location: Toronto, Ontario About Our Client Our client is a Ministry-inspected online high school offering Ontario Secondary School Diploma (OSSD) credits to students around the world. Founded in 2010, they served over 30,000 students in 2025, making them one of the largest K-12 schools in Canada by enrollment. Their proprietary Learning Management System...