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Senior Developer Java Canada, Mississauga Jobs

48 Job Offers

Senior Backend Java Developer
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Join our Technology team in Mississauga as a Senior Backend Java Developer. You will analyze, design, and implement new application systems using your 5-8 years of software development experience. This role involves full project lifecycle management, from planning to post-implementation support. ...
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Canada , Mississauga
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Not provided
https://www.citi.com/ Logo
Citi
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Until further notice
Senior Backend Java Developer
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Join Citi in Mississauga as a Senior Backend Java Developer. Utilize your 5-8 years of experience in systems analysis and applications development. You will lead projects through the full development lifecycle, from planning to implementation. This role requires strong problem-solving skills to m...
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Canada , Mississauga
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https://www.citi.com/ Logo
Citi
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Until further notice
Senior Lead Backend Java Developer
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Lead a global team as a Senior Lead Backend Java Developer in Mississauga. This management role requires 10+ years of hands-on Java development and team leadership experience. You will drive application systems, manage budgets, and influence strategy within a leading banking environment. Expertis...
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Canada , Mississauga
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Not provided
https://www.citi.com/ Logo
Citi
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Until further notice
Senior Java and Scala Developer
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Join our Fixed Income Data team in Mississauga as a Senior Java/Scala Developer. Design high-performance APIs and microservices for a cutting-edge, large-scale data platform using Kafka and cloud-native tech. Leverage your 3-5 years of experience in Spring Boot and distributed systems within fina...
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Canada , Mississauga
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94300.00 - 141500.00 USD / Year
https://www.citi.com/ Logo
Citi
Expiration Date
Until further notice
Senior Java Developer
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Join our Fixed Income Data team in Mississauga as a Senior Java Developer. Design and implement high-performance, scalable API services and microservices using Java, Spring Boot, and big data platforms like Kafka. Leverage your 3-5 years of experience in distributed systems and low-latency data a...
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Location
Canada , Mississauga
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Not provided
https://www.citi.com/ Logo
Citi
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Until further notice
Senior Backend Java Developer
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Join our Mississauga team as a Senior Backend Java Developer. You will build high-performance, low-latency banking APIs using Java, Spring Boot, and both Oracle and MongoDB databases. This role involves mentoring, solving complex problems, and designing scalable systems. We offer global benefits ...
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Location
Canada , Mississauga
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94300.00 - 141500.00 USD / Year
https://www.citi.com/ Logo
Citi
Expiration Date
Until further notice
Java Full Stack Senior Developer
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Join our team in Mississauga as a Senior Java Full Stack Developer. You will design and implement scalable, low-latency microservices using Java, Spring Boot, and OpenShift. This role requires expertise in both RDBMS (Oracle) and NoSQL (MongoDB) databases. Contribute to the full development lifec...
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Location
Canada , Mississauga
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Salary
94300.00 - 141500.00 USD / Year
https://www.citi.com/ Logo
Citi
Expiration Date
Until further notice
Senior Java Backend Developer
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Join Citi's Banking Technology as a Senior Java Backend Developer in Mississauga. Leverage your 5+ years with Java, Spring Boot, and microservices to build innovative platforms. You'll design strategic solutions using Kafka, MongoDB, and modern DevOps practices within an agile, collaborative glob...
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Location
Canada , Mississauga
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Salary
94300.00 - 141500.00 USD / Year
https://www.citi.com/ Logo
Citi
Expiration Date
Until further notice

About the Senior Developer Java role

Explore the pinnacle of backend and full-stack engineering with Senior Java Developer jobs. This senior-level position is a cornerstone of modern software development, where experienced professionals architect, build, and maintain the robust, scalable systems that power enterprises. A Senior Java Developer is far more than a coder; they are technical leaders, problem-solvers, and mentors who ensure the delivery of high-quality, secure, and performant applications. These roles are critical across virtually every industry, from finance and healthcare to e-commerce and technology, offering a challenging and rewarding career path for seasoned engineers.

Professionals in these jobs typically shoulder a comprehensive set of responsibilities. Their core duty is the end-to-end development of enterprise-grade applications, often leveraging a microservices architecture. This involves designing system architecture, writing clean, maintainable code, and developing both backend services and, frequently, front-end components. They are responsible for creating and consuming RESTful APIs, ensuring seamless integration between systems. A significant part of their role is advocating for and implementing best practices, including rigorous code reviews, Test-Driven Development (TDD), and robust CI/CD pipelines to automate testing and deployment. Furthermore, Senior Java Developers are expected to troubleshoot complex issues, optimize application performance, and ensure systems are compliant with security protocols. They often act as technical leads, guiding project direction, mentoring junior team members, and collaborating closely with cross-functional teams including product managers, business analysts, and DevOps engineers.

The typical skill set for these jobs is both deep and broad. At the foundation is expert-level proficiency in Core Java (Java 8+), with a strong grasp of its ecosystem. Mastery of the Spring Framework, especially Spring Boot and Spring Cloud for microservices, is almost universally required. Experience with object-relational mapping tools like JPA/Hibernate and a solid understanding of both SQL (e.g., Oracle, PostgreSQL) and NoSQL (e.g., MongoDB) databases is essential. In today's cloud-native environment, familiarity with containerization (Docker) and orchestration (Kubernetes/OpenShift) is standard, as is experience with event-driven architectures using messaging platforms like Apache Kafka. On the front-end, knowledge of modern JavaScript frameworks such as Angular or React is a common expectation for full-stack roles. Beyond technical acumen, successful candidates possess excellent analytical and problem-solving skills, clear communication abilities for both technical and non-technical audiences, and a proven track record of working within Agile/Scrum methodologies. A growth mindset, leadership qualities, and a commitment to writing clean, testable code are the hallmarks of a top-tier Senior Java Developer exploring new opportunities in the job market.