java backend engineer jobs in Toronto

Affirm is hiring a Senior Software Engineer (Backend, Reliability Platform) to design and build a next-generation reliability platform for production systems. You will blend distributed systems engineering with AI-assisted development to help teams understand, debug, and improve service health. This remote-first role requires 4+ years of backend experience...

Affirm is hiring a Senior Software Engineer, Backend (Partner Merchant Interface) to join the Decisions Foundations Integration team. This remote Canada role focuses on APIs used by Partners and Merchants, powering integrations with major partners like Amazon and Stripe. You will design, develop and operate backend systems at scale using Python or Kotlin,...

Kaseya seeks a Senior Software Engineer for its Data Platform in Toronto. You will design and build distributed backend services that ingest, transform, and expose data across products. You will own services from design through production, ensuring reliability and scalability in a cloud-native environment. Join a data-driven team focused on large-scale...

Botsford Associates is hiring Senior Back-End Java Developers to support a number of large-scale Foreign Exchange (FX) platform modernization and integration program within our Capital Markets division. This role focuses on the integration of FX capabilities into systems across the enterprise, including recently acquired financial entities by our clients....

Seeking a Data Engineer specializing in backend API development in Toronto, ON. This contract role focuses on the creation of internal APIs crucial for enterprise data integration, emphasizing REST and event-driven architectures. To qualify, candidates must be PR or citizens residing in Canada for at least five years. You will design and construct APIs that...

Miratech helps visionaries change the world. We are a global IT services and consulting company that brings together enterprise and start-up innovation. Today, we support digital transformation for some of the world's largest enterprises. By partnering with both large and small players, we stay at the leading edge of technology, remain nimble even as a...

- Our team develops and maintains core backend systems for the OpenTable For Restaurants product - Our systems are responsible for determining which tables at a restaurant are available at various times and party configurations based on a system of constraints specified by each restaurant - Our systems are also responsible for booking reservations and...

About Agilno At Agilno, we have spent the last 10 years building digital products for product-led North American companies. We don’t just ‘crank out’ lines of code; we collaborate closely with our partners to plan, design, and optimize software that brings actual, measurable value to users. Our engineering team is made up of people who genuinely care...

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. ...

Bevertec in Toronto is seeking a Senior Software Developer to lead architecture and delivery of enterprise apps using Java/React and Dynamics 365 CRM. You will integrate Power Platform solutions with Dataverse and build robust APIs in a cloud-native environment. The role requires hands-on experience with CRM/Case Management systems, strong data modelling,...

A software development company in Ontario seeks a Senior Full Stack Developer to translate technical specifications into working applications. The ideal candidate will have over 10 years of experience, strong skills in Java services, and proficiency in modern UI frameworks like AngularJS and NodeJS. You will work in an Agile environment and ensure compliance...

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. Identity Engineering owns the systems responsible for onboarding all consumers and managing their authentication and verification journeys across Affirm’s product surfaces. In...

Tech Lead, Small Business Lending Location Greater Toronto Area (Hybrid - 2 days/week onsite)About the Opportunity We're seeking a hands-on Tech Lead to join a growing engineering organization focused on modernizing lending technology. This individual will provide technical leadership for a pod of 5-6 engineers while remaining actively involved in software...

Elevate your career with Affir as a Backend Software Engineer in our remote Identity Decisioning team. Focus on developing backend systems that ensure consumer identity validation across all products. Affir is seeking a Software Engineer II to join its remote team in Canada. You'll design and launch robust backend systems, working with technologies such as...

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...

Build AI-powered applications at Code17 using Java, Spring Boot, React or Angular, and practical large language model integration expertise. Take AI capabilities from prototypes into secure, reliable production applications. As a Senior Full Stack Engineer, you will develop frontend and backend applications for enterprise solutions. Your work spans REST...

Software Engineer II, Backend (Identity Decisioning) Remote Canada At Affir, 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. We are looking for a Software Engineer to join the Identity Decisioning team, responsible for building backend...

Build Oracle data pipelines with Java and SQL as a Software Engineer I in Fivetran’s Toronto hybrid office, including two weekly office days. As part of the Oracle Connector Team, you will build pipeline features, improve architecture, and maintain reliable service operation. You will investigate data replication, analyze Oracle releases, and help...

Snap Inc is a technology company. We believe the camera presents the greatest opportunity to improve the way people live and communicate. Snap contributes to human progress by empowering people to express themselves, live in the moment, learn about the world, and have fun together.The Company operates Snapchat, a visual messaging app that enhances your...

Nexxa is building the best AI systems for heavy industries — enabling machines, systems and operations to think, decide and act autonomously across manufacturing, large-scale infrastructure, logistics and legacy environments.Our mission is to translate deep technical breakthroughs into operational reality, solving some of the hardest systems-level problems...