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Entry level java developer • etobicoke on
Senior Java Developer in Mississauga, Ontario II Fulltime
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Senior Java Developer in Mississauga, Ontario II Fulltime
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Java Developer in Mississauga, Ontario (Hybrid)
Opening- 10
Salary CAD 120K
Hands on coding in Java
Job Title : Senior Java Developer
Location : Mississauga, Ontario, Canada
Company : Citibank
Employment Type : Full-Time
About the Role
We are seeking a highly skilled and experienced Senior Java Developer to join our technology team in Mississauga. The ideal candidate will play a key role in designing, developing, and maintaining high-performance, scalable, and secure enterprise banking applications. This position requires strong hands-on coding expertise, system design experience, and a deep understanding of financial services technology environments.
Key Responsibilities
Design, develop, and maintain enterprise-grade applications using Java 8 / 11 / 17
Develop microservices-based applications using Spring Boot & Spring Framework
Build and integrate RESTful APIs and event-driven services
Participate in system architecture and technical design discussions
Ensure high performance, scalability, and security of applications
Collaborate with cross-functional teams including QA, DevOps, Product, and Business stakeholders
Perform code reviews, unit testing, and enforce best coding practices
Troubleshoot and resolve production issues in high-availability systems
Contribute to CI / CD pipelines and DevOps practices
Required Qualifications
8+ years of hands-on experience in Java development
Strong expertise in :
Core Java (Collections, Multithreading, Concurrency, JVM tuning)
Spring Boot, Spring MVC, Spring Security
RESTful API development
Microservices architecture
Experience with :
SQL & NoSQL databases (Oracle, PostgreSQL, MongoDB)
Messaging systems (Kafka, RabbitMQ)
Docker & Kubernetes
Git, Maven / Gradle
Experience working in Agile / Scrum environments
Strong understanding of design patterns and system design principles
Experience in banking or financial services domain preferred
Nice to Have
Experience with cloud platforms (AWS / Azure / GCP)
Knowledge of CI / CD tools (Jenkins, GitHub Actions)
Exposure to event-driven architecture
Experience with performance tuning and distributed systems
Familiarity with regulatory and compliance-driven environments