senior java backend developer jobs in Toronto, Ontario

**Job Description** As a Staff Software Engineer II at KeyCite, you will lead complex, business-critical engineering initiatives from architecture through production. You will modernise established platforms while maintaining the reliability that customers depend on, and you will set technical direction across teams. **Key Responsibilities** - Lead...

**About Us** The Ontario Cannabis Store provides safe, responsible access to recreational cannabis for adults 19 and older. We operate the sole legal online store for recreational cannabis in Ontario and are the provincial wholesaler of cannabis for private retail stores. Working at the OCS is a unique opportunity to be part of an agile start-up in a...

At Vanta, our mission is to help businesses earn and prove trust. We believe that security should be monitored and verified continuously, and we empower companies to practice better security and prove it with ease. Vanta has a kind and talented team, and while some have prior security experience, many have been successful at Vanta without it. Vanta's...

**Full Stack Java Developer** **Location:** Toronto, ON **Onsite Flexibility** Hybrid – 2 days onsite, 3 days work from home **Contract Details** - **Position Type:** Contract - **Contract Duration:** 12 months (with possibility of extension based on business needs and performance; conversion to permanent also possible based on...

**Job Description** ClientLink is a mission-critical wealth management platform that supports portfolio accounting, investment operations, and client servicing across the enterprise. As part of our strategic modernization journey, we are transforming the platform using modern architecture, event-driven integration, cloud-native technologies, and an...

**Role : RPA Platform Engineer** **Location:** **Toronto, ON (Hybrid)** **Experience: 8+ years** **Job Description:** - The Senior Platform Engineer develops, maintains, and manages Automation platform on premise, AWS cloud and vendor SaaS to enable automation across the bank and core operations enabling the delivery of automation products and data...

Client: Ministry of Treasury Board Secretariat – RQ11819 We are seeking a **Senior Software Developer** with strong experience in Microsoft .NET application development, C#, ASP.NET, Web APIs, Microsoft Azure services, and SQL Server. The ideal candidate will have expertise in enterprise application design, database development and optimization,...

We are seeking a Senior Test Manager to lead large-scale enterprise quality engineering and digital transformation initiatives. In this role, you will bridge the gap between technical execution and business strategy, driving our next-generation quality engineering roadmap with a heavy emphasis on Test Automation, DevOps, and Generative/Agentic AI across...

**About The Role** The Growth team is responsible for building and optimizing the UI/UX across all Web and OTT applications at Tubi. The team primarily focuses on implementing features related to full funnel user acquisition and growth, including SEO user registration, onboarding, and account management. As a Staff Engineer (L5) on this team, you act...

Sign in to apply for this position Sign In to Apply Ref: RQ11528 Contract – 12 Months (Extension Possible) Onsite – Toronto (222 Jarvis St.) Posted Date: 2026-10-30 Location: Onsite – Toronto (222 Jarvis St.) Public Sector Experience: Required – OPS / Public Sector Contract End Date: 2027-10-01 \* Rate: $99/hour ...

Sign in to apply for this position Sign In to Apply Ref: RQ11429 Contract – 9 Months (Extension Possible) Onsite – Toronto (222 Jarvis Street) Posted Date: 2026-10-30 Location: Onsite – Toronto (222 Jarvis Street) Public Sector Experience: Required – OPS / Public Sector Contract End Date: 2027-05-31 \* Rate:...

**Overview** The Canada Tax Content team is looking for a highly motivated, innovative Staff Software Developer to help build and maintain Canada's leading tax products. You'll work with a diverse team that's transforming how thousands of accountants and consumers manage their clients' finances and prepare taxes — sitting at the intersection of software...

Job Overview The client is seeking a highly experienced Senior Software Developer with strong expertise in Java development, RESTful Web Services, microservices architecture, and database technologies. The successful candidate will be responsible for designing, developing, testing, implementing, and maintaining large-scale, multi-client web...

The client is seeking an experienced Senior Software Developer API to design, develop, implement, and maintain enterprise-level APIs, web applications, and system integrations. The ideal candidate will have extensive experience in Java development, RESTful APIs, enterprise integration platforms, API security, and relational databases, with the ability to...

**Description** Ring is redefining how millions of people interact with their homes every single day. As a Senior Builder on the App Platform team, you won't just write code — you'll set the technical direction for one of the most widely-used connected device applications in the world. Native mobile is the foundation our customers rely on, and we need...

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. ...

Access Full Position Posting **Purpose:** Under the direction of the Integration Architect, the Senior Integration Developer role provides advanced system architecture, development, and knowledge transfer on the enterprise platform and cloud infrastructure configuration. The role is adept at problem assessment and searches for and implements practical...

Job Overview The Government Services Integration Cluster is seeking an experienced Senior Software Developer – API to design, develop, implement, and support enterprise-level API solutions and integrations. The successful candidate will be responsible for developing RESTful APIs, integrating enterprise applications, implementing API security...

**Job Title: Senior Java Developer Location: Toronto, ON (4x onsite a week) Employment Type: Contract Pay Rate: CAD$55/HR INC** We are seeking a Senior Java Developer / Technical Lead to design and deliver secure, scalable, and high-volume banking and payment applications. The role will lead the development of Java and Spring Boot...

**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...