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Full Stack Senior Java Developer

Job in Mississauga, Ontario, Canada
Listing for: Citibank (Switzerland) AG
Full Time position
Listed on 2026-02-21
Job specializations:
  • Software Development
    Java Developer, Full Stack Developer, Software Engineer, Backend Developer
Job Description & How to Apply Below
For additional information, please review .
* Design, develop, and implement new features and functionalities for web applications using Java and related frameworks.
* Develop and maintain robust back-end services, APIs, and databases, with a strong emphasis on the Spring Boot framework.
* Implement engaging and responsive user interfaces using modern front-end technologies such as React.
* Collaborate with cross-functional teams to define, design, and ship new features.
* Write clean, maintainable, and efficient code following best practices and coding standards.
* Participate in code reviews to ensure code quality and share knowledge.
* Troubleshoot, debug, and upgrade existing systems.
* Contribute to all phases of the development lifecycle, including requirements gathering, design, coding, testing, and deployment.
* Optimize applications for maximum speed and scalability.
* Stay up-to-date with emerging technologies and industry trends.
* Strong proficiency in Java and deep, hands-on experience with the
** Spring ecosystem (Spring Boot, Spring MVC, Spring Data, reactive spring)**.
* Proven experience building and consuming
** RESTful APIs
** and designing microservices with
** Spring Boot**.
* Experience with relational databases (e.g., Postgre

SQL, MySQL) and No

SQL databases (e.g., Mongo

DB).
* Solid understanding of data access layers and ORM frameworks like
** Spring Data JPA/Hibernate**.
* Experience with build tools like Maven or Gradle.
* Hands-on experience with Apache Kafka for event streaming/messaging (publishing/consuming events, schema evolution, and delivery semantics).
* Proficiency in modern front-end technologies (e.g., HTML5, CSS3, JavaScript/Type Script).
* Experience with working on React

JS and Redux.
* Familiarity with front-end build tools (e.g., Webpack, npm, yarn).

- ** General

Qualifications:

*
* * Experience with version control systems (e.g., Git).  
* Understanding of software development best practices, including agile methodologies, continuous integration, and continuous delivery (CI/CD).  
* Excellent problem-solving skills and attention to detail.  
* Strong communication and interpersonal skills, with the ability to work effectively in a team environment.
* Experience with
** Graph

QL
* * API design and development.
* Familiarity with
** Spring Cloud
** for building distributed systems.
* Knowledge of containerization technologies like Docker and orchestration tools like Kubernetes.
* Experience with cloud platforms (e.g., AWS, Azure, GCP).
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Position Requirements
10+ Years work experience
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