Top Java Developer Jobs in Toronto

Lead modernization of TD's Jira/JSM platforms and build enterprise applications using Java, React, and Spring. Drive Atlassian Cloud migration, design secure integrations (OAuth/LDAP/REST), maintain ScriptRunner customizations, contribute to CI/CD pipelines, and support high-availability production systems. Provide technical leadership, mentor developers, and ensure compliance with change management and operational standards.

Senior full-stack Java developer responsible for hands-on coding, code and design reviews, system design, and mentoring. Collaborate globally to deliver microservice-based solutions, follow engineering standards, consult with stakeholders, and participate in SDLC activities including unit testing within an Agile/Scrum environment.

Design, build, and maintain scalable, microservices-based Java applications using Spring Boot. Develop high-performance RESTful APIs, optimize databases and caching (Redis), deploy and monitor on GCP, support CI/CD with Jenkins/Docker/Kubernetes, perform testing with JUnit/Mockito, troubleshoot production issues, and collaborate with cross-functional Agile teams.

Lead hands-on development of high-scale Java/Spring Boot microservices and REST APIs, mentor engineers, drive architecture and CI/CD cloud deployments, build responsive front-ends, and integrate AI/LLM tools to accelerate development and enhance application capabilities.

The Senior Java Developer will lead software development for the Operations Workbench platform, focusing on coding, best practices, and collaboration within an Agile team.

Join an agile engineering team to design and develop backend systems and REST APIs for high-throughput, low-latency travel services. Build transactional services, implement real-time and batch big-data solutions, query and analyze data with SQL and NoSQL stores, and work with Spring, microservices, containers, CI, and automation testing while collaborating cross-functionally to deliver product objectives.

Design, develop, and maintain low-latency front-office eTrading applications. Collaborate with traders, sales, and quants, drive engineering standards, optimize performance and scalability, enhance automated testing and CI/CD, and provide onsite support to Rates traders in Paris.

Design, develop, and implement enterprise Java applications. Perform systems analysis, feasibility, estimates, SDLC oversight, testing, deployment, and post-implementation support. Use cloud-native technologies (Kubernetes, Docker), event-driven architecture (Kafka), RDBMS, API development, and application security. Mentor junior analysts, collaborate with stakeholders, enforce standards and compliance, and drive DevOps/CI-CD practices.

Lead application systems analysis and programming activities, ensuring integration of functions, resolving complex problems, and coaching mid-level developers. Focus on full stack development using Java, JavaScript, and modern architecture principles.

The Lead Java Developer will design, build, and support web applications, focusing on both front-end and back-end development using Java, Spring Boot, Angular, and microservices architecture.

Senior Java Full Stack Developer responsible for designing, building, testing, and supporting scalable Java/Spring Boot microservices and React front-ends. Deliver secure, maintainable solutions, participate in code reviews, production support, and continuous improvement while collaborating with business and technology partners.

Participate in analysis, design, development, testing, and implementation of application systems. Provide user support, perform feasibility and risk assessments, recommend security and process improvements, coach junior analysts, and consult with stakeholders to deliver application solutions while ensuring regulatory and policy compliance.

Design, build, and own high-performance, low-latency Java applications and RESTful services using Spring/Spring Boot. Architect solutions, write tests and CI/CD pipelines, troubleshoot production issues, lead code reviews, collaborate across teams, and drive adoption of new technologies for scalable, resilient financial systems.

The Lead Full Stack Java Developer is responsible for leading software development, enhancing applications, and collaborating with teams for system improvements while ensuring compliance and ethical standards.

Design, build, and own high-performance, low-latency Java services and RESTful APIs. Architect solutions with Spring/Spring Boot, ensure test automation and CI/CD, operate production systems, lead code reviews, and collaborate across teams to deliver reliable, scalable financial applications.

Design, build, and own high-performance Java services for low-latency, high-volume financial systems. Architect RESTful APIs with Spring/Spring Boot, implement test automation and CI/CD, operate production systems, perform code reviews, and collaborate cross-functionally to deliver scalable, reliable cloud-native applications using Kubernetes/OpenShift and messaging systems like MQ/Kafka.

Lead a squad as the technical lead for a Broker Experience Ecosystem: design scalable microservice solutions, own production stability, mentor developers, drive features from PI planning to production, and contribute to engineering culture using Java/Angular stack and modern CI/CD/container tooling.

Design, build, and maintain scalable cloud-native services, APIs, and platform components. Contribute to architecture, CI/CD, observability, and operational support. Mentor junior engineers, collaborate with product and UX, and help evolve AI-powered and SaaS platform capabilities to enable cross-product automation and developer productivity.

The Sr. Consultant, Back End Developer leads application systems design and development, provides technical consultation, and guides project teams towards strategic solutions aligned with business objectives.

Lead design and development of backend systems using Java and microservices. Translate business requirements into system designs, drive solution architecture, mentor junior engineers, manage integrations and APIs, and contribute to technical roadmaps and operational efficiency.

Senior full‑stack Java developer responsible for designing, building, testing, and deploying React front ends and Spring Boot microservices on cloud platforms (OpenShift/Kubernetes and AWS). Develop RESTful/MCP APIs, integrate with S3 and Oracle, apply CI/CD, mentor junior staff, evaluate new technologies (including generative AI/LLMs), and ensure secure, maintainable enterprise solutions while managing project delivery and risk.

Participate in analysis, design, development, testing, implementation and support of application systems. Provide feasibility studies, estimates, risk assessment, security recommendations, and act as SME/coach. Monitor development lifecycle, consult with users and tech teams, and ensure compliance with policies and controls.

Senior Java engineer responsible for designing, developing, and delivering low-latency exchange connectivity and DMA platforms. Collaborate with global teams, product, QA, and support; improve resiliency and latency; maintain testing frameworks and CI; implement test cases for trading functions; drive Agile, CI, and AI tooling adoption while defining best practices and standards.

The role involves developing and modernizing application systems in Capital Markets and Credit Risk, providing technical leadership, ensuring compliance, and mentoring junior developers.

The Senior Java Developer will lead design and delivery of systems, mentor engineers, and ensure scalable architecture using cloud-native technologies.