senior backend software engineer python jobs in Toronto

Terminal builds telematics data infrastructure for the commercial fleet industry from Toronto. You will own end-to-end backend systems, shaping APIs and platform components used by customers to access data from 330+ providers. Join a team that ships at scale, with in-person collaboration in downtown Toronto. Expect to work on TypeScript/Node.js services...

Armstrong Fluid Technology invites a senior, hands-on Enterprise Developer to join our enterprise architecture team. You will design, refactor, and migrate applications using Python, C#, and .NET while modernizing legacy systems with microservices and cloud-native approaches. You will work on AWS-based cloud deployments, containerization with...

A renowned gaming company is seeking a Senior Go Developer for a full-time, hybrid position in Toronto. The role focuses on backend microservices development in a high-scale environment. Candidates should have over 5 years of Go experience and understand Go concurrency, frameworks, and SQL databases. The position offers the opportunity to lead strategic...

The OpportunityWe're at an exciting point: agentic automation is moving from prototype to production, and we need a senior engineer who can own high-impact work end-to-end. You'll turn ambiguous goals into shippable milestones, operate what you build in production, and iterate fast based on real customer feedback — all in a team that moves quickly without...

Elevate your career with Mozilla as a Senior Backend Engineer on the Ecosystem Services Team. Contribute to backend systems that power Firefox and prioritize privacy and security. In this role, you'll own backend services, ensuring their reliability and health in production. Collaborate closely with frontend engineers and product managers while leveraging...

Software Engineer, Global Payments Technology (Backend Java Developer) Requisition ID: 268500 Purpose We are seeking an Intermediate Java Developer to join our agile development team and contribute to the design, development, and maintenance of backend services. The ideal candidate has hands‑on experience with Java and Spring Boot, working knowledge of...

At Affim, 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. As we build Affim's advertising platform and evolve Marketplace into a best in class shopping destination, the ability to route and discover is one of the greatest levers for...

Thomson Reuters is looking for a Senior Backend Engineer with AI expertise to develop robust backend services. Contribute to real-world AI systems in a hybrid work setting. In this pivotal position, you’ll design and optimize backend architectures for AI-powered products tailored for the tax and accounting sector. Engage with complex systems, ensuring...

Elevate your career as a Senior Software Engineer at Scotiabank in Toronto. This role focuses on designing and developing enterprise applications with Java, Spring Boot, and SQL. Scotiabank is seeking a skilled individual to contribute to their inclusive technology team. You will lead technical designs, coordinate systems delivery, and enhance application...

Pulsenics is seeking a Senior Embedded Software Engineer with 7+ years of experience to lead and evolve the embedded firmware architecture that underpins our hardware and software solutions used to test, characterize, and validate electrochemical devices (batteries, electrolyzers, fuel cells). This role is responsible for defining, implementing, and...

Toast is a rapidly growing company that's revolutionizing how the restaurant industry does business by pairing technology with an extraordinary commitment to customer success. We help restaurants streamline operations, increase revenue, and deliver amazing guest experiences through our platform that combines restaurant point of sale, team management,...

Secure Every Identity, from AI to Human Identity is the key to unlocking the potential of AI. Okta secures AI by building the trusted, neutral infrastructure that enables organizations to safely embrace this new era. This work requires a relentless drive to solve complex challenges with real-world stakes. We are looking for builders and owners who operate...

At Justworks, you’ll enjoy a welcoming and casual environment, great benefits, wellness program offerings, company retreats, and the ability to interact with and learn from leaders in the startup community. We work hard and care about our most prized asset - our people. We’re helping businesses get off the ground by enabling them to focus on running...

About Kaseya Kaseya is the leading provider of AI-powered IT management and cybersecurity software, serving Managed Service Providers (MSPs) and internal IT organizations worldwide. Our comprehensive platform helps organizations efficiently manage, secure, and automate their IT environments, driving operational efficiency and long-term business success. ...

Drive technological advancements as a Senior Software Engineer at d1g1t, specializing in infrastructure within a leading financial services platform. Play an essential role in enhancing project delivery through effective coding and problem-solving. As part of the engineering team, you will focus on designing and implementing robust solutions using Python...

Klue Engineering is hiring! We're looking for a Senior Machine Learning Engineer to join our team in Toronto, focusing on building and optimizing state-of-the-art LLM-powered agents that can reason, plan and automate workflows for users. You will be leading the design and development of search and retrieval agent systems that enable users to generate...

Join to apply for the Senior Software Engineer II role at Tripledot Studios Description Department: Engineering Location: Toronto, CA Who are we? Tripledot is one of the largest independent mobile games companies in the world. We are a multi‑award‑winning organisation, with a global 2,500+ strong team across 12 studios. Our expanded portfolio...

Who We Are AeroVect is transforming ground handling with autonomy, redefining how airlines and ground service providers around the globe run day-to-day operations. We are a Series A company backed by top-tier venture capital investors in aviation and autonomous driving. Our customers include some of the world’s largest airlines and ground handling...

A tech solutions firm in Toronto seeks a Senior Software Developer with expertise in GIS and ArcGIS technologies. You will be responsible for developing applications and supporting geospatial data initiatives related to childcare programs. Ideal candidates should possess strong programming skills in R and Python, as well as experience in database management....

Who is Litmus Litmus is building the data foundation that powers industrial AI. AI doesn't work without real-world, contextualized data - Litmus makes that data usable. As AI adoption accelerates, most industrial environments still can't access or use their operational data. We solve that gap. We're a growth-stage software company helping manufacturers...