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Senior Full Stack Java Developer

Job in Mississauga, Ontario, Canada
Listing for: Citi
Full Time position
Listed on 2026-02-27
Job specializations:
  • Software Development
    Full Stack Developer, Java Developer, Software Engineer, Backend Developer
Job Description & How to Apply Below

Responsibilities

  • 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.
  • 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.
  • Required Qualifications

  • Back-End Expertise: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 (, Postgre

    SQL, MySQL) and No

    SQL databases (, Mongo

    DB).Solid understanding of data access layers and ORM frameworks like Spring Data JPA/Hibernate
    .Experience with build tools like Maven or Gradle.
  • Front-End Expertise:Proficiency in modern front-end technologies (, HTML5, CSS3, JavaScript/TypeScript).

    Experience with working on React

    JS and Redux.

    Familiarity with front-end build tools (, Webpack, npm, yarn).
  • General

    Qualifications:

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

  • Experience with GraphQL 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 (, AWS, Azure, GCP).
  • ------------------------------------------------------

    Job Family Group:

    Technology

    ------------------------------------------------------

    Job Family:

    Applications Development

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    Time Type:

    Full time

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    Primary Location Full Time Salary Range:

    $94, - $141,

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    Most Relevant Skills

    Please see the requirements listed above.

    ------------------------------------------------------

    Other Relevant Skills

    For complementary skills, please see above and/or contact the recruiter.

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    Automated Processing and AI

    We use automated processing, including artificial intelligence, for our legitimate business interests (or our reasonable and appropriate business purposes) to identify and align the candidate's skills and abilities with a specific job opening. Additionally, if you so choose, or consent, we can match your skills and abilities to other suitable roles at Citi.

    Importantly, all our hiring processes and decisions, including determining your suitability for a role, are conducted, checked, and decided by individuals. Our automated processing and AI do not involve relying on automatic or autonomous decision-making. Please refer to any Jurisdictional Considerations, with specific provisions for your country (where relevant) for further details.

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    Position Requirements
    10+ Years work experience
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