backend developer jobs in Toronto

BitGo (NYSE: BTGO) is the digital asset infrastructure company delivering custody, wallets, staking, trading, financing, stablecoins, and settlement services from regulated cold storage. Since 2013, BitGo has focused on accelerating the transition of the financial system to a digital asset economy. BitGo maintains a global presence and multiple regulated...

Source Code Staffing is seeking a Senior Back End Engineer to design and build scalable cloud-based services using C#.Net and Azure. The role is based in Toronto with fully remote arrangements for a 1-year contract and potential extension.You will own backend development, implement tests, contribute to CI/CD, and collaborate with the architecture and product...

Python Developer Needed for Quantara AI Development We are building out features for our Quantara AI business and need a skilled Python freelancer to join us. Scope & Requirements: - Build and integrate clean, responsive Python components. - Connect with backend endpoints and verify data handling. - Maintain clean git commits and basic code...

Description: Demonstrated experience designing, developing and integrating AI-enabled applications, including Large Language Models (LLMs), AI agents, agent-based workflows, document processing solutions, and human-in-the-loop review and approval processes. This role will support the development of the Curriculum AI Assistant Platform, which combines AI...

At Synechron, we believe in the power of digital to transform businesses for the better. Our global consulting firm combines creativity and innovative technology to deliver industry-leading digital solutions. Synechron’s progressive technologies and optimization strategies span end-to-end Artificial Intelligence, Consulting, Digital, Cloud & DevOps, Data,...

Java Developer with CMS Please find below Job description and share me your updated resume at Saurav.upadhyay@irissoftware.com. Skills dotCMS Adobe Experience Manager (AEM) Sitecore Magnolia Contentful Key Responsibilities Design, develop, and maintain Java-based backend services using Spring Boot and microservices architecture. Build and optimize RESTful...

Rust Developer Needed for Quantara AI DevelopmentWe are building out features for our Quantara AI business and need a skilled Rust freelancer to join us.Scope & Requirements:Build and integrate clean, responsive Rust components.Connect with backend endpoints and verify data handling.Maintain clean git commits and basic code documentation.Functional feature...

Contract (6 months – possibility extension)Role OverviewClient is looking for a skilled Python Backend Engineer to build and scale high-performance backend systems. This role will focus on API development, platform engineering, and system design, supporting enterprise-grade, scalable, and secure financial platforms.Key ResponsibilitiesDesign, develop, and...

At eBay, we're more than a global ecommerce leader — we’re changing the way the world shops and sells. Our platform empowers millions of buyers and sellers in more than 190 markets around the world. We’re committed to pushing boundaries and leaving our mark as we reinvent the future of ecommerce for enthusiasts. Our customers are our compass,...

Become a key player in our Telematics team with the company as a Backend Engineer. Help us enhance safety features and improve rider experiences through innovative tech solutions. In this role, you will engage in backend development and work on high-volume data processing using tools like AWS and Spark. Collaborate with cross-functional teams to generate...

Kumaran Systems: Engineering Future-Ready Transformations Since 1992, Kumaran Systems has been helping enterprises bridge the past and the future, reimagining legacy systems and embracing AI-led possibilities. With over 34 years of delivery excellence, we specialise in re-engineering core applications, driving cloud transformation, and building...

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,...

6–8 years of experience in C++ development with strong expertise in modern C++ standards.Hands‑on experience in system‑level programming, including software interacting with hardware and operating system resources.Strong understanding of Data Structures, Algorithms, Multithreading, and Concurrency concepts.Proven experience in performance tuning,...

S'more about the team The Menu Operations team ensures the accuracy, reliability, and consistency of data and workflows across our ecosystem. This role will focus on automated data validation, cross-system reconciliation, monitoring, troubleshooting, and developing scalable solutions that improve data quality and operational efficiency. The role will work...

About Us Kumaran Systems: Engineering Future-Ready Transformations Since 1992, Kumaran Systems has been helping enterprises bridge the past and the future, reimagining legacy systems and embracing AI-led possibilities. With over 34 years of delivery excellence, we specialise in re-engineering core applications, driving cloud transformation, and building...

Role: API Developer (REST, Microservices, Cloud) Location: Toronto, ON - Hybrid Responsibilities Lead and contribute to the migration of existing Azure / PCF applications to Atlas, including analysis, refactoring, and deployment. Refactor backend services and UI components to ensure cloud‑native readiness, scalability, and performance. Collaborate with...

Inclusion without Exception Tata Consultancy Services (TCS) is an equal opportunity employer, and embraces diversity in race, nationality, ethnicity, gender, age, physical ability, neurodiversity, and sexual orientation, to create a workforce that reflects the societies we operate in. Our continued commitment to Culture and Diversity is reflected in our...

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.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,...

Lead the design and development of innovative backend systems at Swoop, enhancing healthcare outcomes through technology. This hybrid role in Toronto requires expertise in building scalable APIs and services. As a Senior Backend Engineer, you will architect pivotal technology for multiple web products at Swoop, focusing on NimbleRx. Collaborate with top...

We are seeking an experienced Hadoop Developer with strong hands‑on expertise in Spark and Scala to build and support large‑scale data processing solutions. The ideal candidate will also bring domain knowledge in Liquidity Reporting and Capital Markets, along with strong communication and presentation skills.Job SummaryWe are seeking an experienced...