Top Java Developer Jobs in Toronto

Develop and support full-stack applications for OTC derivatives and Markets Technology. Responsibilities include feasibility analysis, system design, coding, testing, implementation, user support, security improvements, risk assessment, and advising junior analysts. The role requires Java-based REST API development, JavaScript or React proficiency, TDD, clean code, algorithms, SQL, and independent work in a fast-paced financial technology environment.

Lead the design, development, and deployment of scalable enterprise applications. Own initiatives from inception through production, translate business requirements into secure technical designs, establish coding and architectural standards, resolve complex technical problems, and conduct code reviews. Mentor developers and analysts, collaborate with product and business stakeholders, manage technical dependencies, and ensure compliance, risk management, and high-quality delivery.

Lead the design and implementation of scalable Java microservices, data platforms, and batch and real-time pipelines. Optimize lakehouse technologies, event-driven architectures, cloud-native deployments, data quality, governance, observability, and performance. Establish schema contracts, testing, monitoring, SLAs, SLOs, and automated validation. Provide technical leadership, mentor engineers, collaborate with product, analytics, and AI teams, and drive modernization and engineering best practices as a hands-on contributor.

Develop cloud-native Java applications, REST APIs, and high-throughput transactional services using Spring Boot and Kafka. Query data with SQL, monitor applications with Splunk and New Relic, and support CI/CD delivery. Collaborate in Agile teams to implement business-focused changes, troubleshoot systems, and contribute to product strategy. The role also involves using GenAI tools and may include microservices, Kubernetes, Docker, GCP, and AWS.

The Senior Engineer in Production Management will develop and implement software, applying best practices in a regulated environment and fostering team productivity through Agile methodologies.

Seeking a Core Java Developer with 7+ years of experience in Core Java, multithreading, and backend systems. Communication skills are crucial.

Design, develop, and integrate scalable applications using Angular for frontend and Java with Spring Boot for backend. Ensure seamless user experience and performance while collaborating with cross-functional teams.

The Java Developer Lead is responsible for backend design decisions, guiding team coding standards, reviewing code, and resolving complex technical issues.

Design, develop, and maintain backend services using Core Java and Spring Boot, working with Microservices, RESTful APIs, and SQL/NoSQL databases.

The Java Full Stack Developer will develop backend services, design Microservices, and build responsive UIs with React.js, ensuring integration and performance optimization.

Design, develop, and deploy Java and Spring Boot backend applications using MongoDB. Build and integrate AI agents with Google ADK and apply prompt engineering techniques to large language model solutions. Support feasibility studies, estimation, planning, testing, implementation, security, compliance, and business-user operations. Serve as an application development subject matter expert while managing projects independently and advising senior stakeholders.

Participate in full application lifecycle: feasibility, analysis, design, development, testing, implementation, and support. Provide estimates, risk assessment, security recommendations, consult with users, coach junior analysts, and act as SME with limited supervision.

Lead development of internal tools and platforms that improve engineering productivity and developer experience. Design, build, deploy, and optimize scalable web applications and cloud services using Java, Spring, Angular, React, and OpenShift. Collaborate with stakeholders, implement microservices and REST solutions, establish automated testing and deployment practices, and provide technical leadership for platform improvements. The role also involves monitoring, debugging, tuning, and maintaining highly reliable enterprise applications.

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.

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.

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 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.

Seeking a Senior Java Developer to engage in Agile Scrum processes, collaborate with teams, and develop solutions using Java and SQL. The role requires delivering quality software through effective communication and continuous learning.

Design, develop, and maintain Java/J2EE applications. Analyze existing programs, implement features using Servlets/JSP/JSF/Spring/EJB, build web services, perform unit/integration testing, optimize performance, manage CI environments, and provide development guidance.

Develop and maintain Java/J2EE applications and web services (REST/SOAP); work with Oracle/SQL Server databases; deploy on WebSphere; collaborate in an Agile team within banking/financial services; communicate with stakeholders.

Develop and maintain secure, scalable Java backend applications and integrations. Design RESTful services, troubleshoot production issues, improve performance and reliability, apply secure coding practices, and collaborate with UI and business stakeholders. The role includes monitoring systems, conducting code reviews, supporting incident postmortems, and mentoring junior developers within an Agile engineering team. This is a hybrid position based in Etobicoke, Ontario, requiring two office days per week.

Develop and maintain Java/J2EE applications using JSP, Servlets, Struts2, Hibernate and WebSphere. Work with MySQL/Oracle and PL/SQL, apply MVC architectures and Java design patterns, collaborate in a team, solve problems, and deliver projects on time in a dynamic environment.

Develop and maintain Java applications and Oracle PL/SQL (Oracle 10/11/12). Build complex SQL queries, work with XML, messaging and Java web services, handle database interactions, debug and analyze issues. Recent hands-on experience in both Java and Oracle required.

Provide systems analysis and recommendations for web-enabled, relational database applications using J2EE and Oracle 10g. Develop and implement solutions with WebSphere, e-Forms, JavaScript, Hibernate, and JDBC. Apply structured development methodologies, CASE and project management tools. Perform data and process modeling, metadata/repository management, data dictionary tasks, and contribute to enterprise architecture deliverables.

Senior Java developer working on multi-tier J2EE applications with strong SQL/Oracle 11g skills. Requires WebSphere 7, Jython and KSH/Bash scripting, Linux experience (RHEL preferred), and experience with Mantas or equivalent FCCM systems. Responsible for system build documentation and documenting solution architectures in Visio/PowerPoint.