Senior Full Stack Java Developer

Citi; Mississauga; On-site; CAD 94,000 - 142,000; Full time

Job summary

Citi in Mississauga is seeking a Senior Full Stack Developer to join the Oracle Ledger Program, building core services and user interfaces for critical financial systems across Citi's organization. You will work with a high-performing technology team to develop full stack applications, drive technical solutions end-to-end, and provide expert-level support across a global delivery model.

This role emphasizes end-to-end delivery, collaboration with business users, and adherence to engineering

Qualifications

• Experience in software development with a focus on full stack engineering across enterprise applications.
• Backend in Java with REST API experience in production.
• Frontend with Angular or React for responsive interfaces.
• Selenium automation testing experience.
• End-to-end software project delivery under deadlines.
• Advanced production support and root-cause analysis.

Responsibilities

• Design, develop, and maintain full stack applications for the Oracle Ledger Program, building both frontend interfaces and backend services to meet evolving business requirements.
• Build and enhance common services and user interfaces using Java, Angular or React, and REST APIs, ensuring high-quality, scalable, and maintainable code.
• Lead the full development lifecycle across analysis, design, construction, testing, and implementation to deliver reliable software on schedule.
• Provide L3 technical support as part of an around-the-sun global support model, diagnosing and resolving complex application issues with minimal disruption.
• Collaborate with business users and cross-functional technology teams to translate requirements into practical technical solutions and recommend the most effective engineering approaches.
• Develop and implement automated test coverage using Selenium to validate functionality and protect system integrity across releases.
• Define and uphold engineering standards and best practices, contributing to a consistent and maintainable codebase across the team.
• Act as a subject matter expert for senior stakeholders and teammates, providing technical guidance and mentoring less experienced developers.

Skills

Full stack engineering

Java backend

Angular or React

Selenium testing

Project delivery

Advanced application support

Education

Bachelor's degree or equivalent

Tools

Python scripting

Job description

Citi is looking for a Senior Full Stack Developer to join the Oracle Ledger Program, where you will build and maintain the common services and user interfaces that underpin critical financial systems across the organization. In this role, you will work with a high-performing technology team to develop full stack applications, drive technical solutions end-to-end, and provide expert-level support across a global delivery model. This is an opportunity to apply your engineering expertise to systems that directly support Citi's financial infrastructure at scale.

Responsibilities

• Design, develop, and maintain full stack applications for the Oracle Ledger Program, building both frontend interfaces and backend services to meet evolving business requirements.
• Build and enhance common services and user interfaces using Java, Angular or React, and REST APIs, ensuring high-quality, scalable, and maintainable code.
• Lead the full development lifecycle across analysis, design, construction, testing, and implementation to deliver reliable software on schedule.
• Provide L3 technical support as part of an around-the-sun global support model, diagnosing and resolving complex application issues with minimal disruption.
• Collaborate with business users and cross-functional technology teams to translate requirements into practical technical solutions and recommend the most effective engineering approaches.
• Develop and implement automated test coverage using Selenium to validate functionality and protect system integrity across releases.
• Define and uphold engineering standards and best practices, contributing to a consistent and maintainable codebase across the team.
• Act as a subject matter expert for senior stakeholders and teammates, providing technical guidance and mentoring less experienced developers.

Required Qualifications & Skills

• Experience in software development, with a strong focus on full stack engineering across enterprise applications.
• Proficiency in Java for backend development, with demonstrated experience building and consuming REST APIs in production environments.
• Hands-on experience with Angular or React for building responsive, user-facing web interfaces.
• Practical experience with Selenium for automated testing, including writing and maintaining test suites that support continuous delivery.
• Proven ability to manage and deliver software projects end-to-end, including planning, prioritization, and delivery under deadline pressure.
• Experience providing advanced application support, including root cause analysis and resolution of complex production issues.
• Bachelor's degree in a relevant field or equivalent professional experience.

Beneficial Skills & Qualifications

• Familiarity with Python for scripting, automation, or data processing tasks within an enterprise application context.
• Exposure to Oracle financial systems or ledger-based platforms, providing useful context for the business domain.
• Experience working within global or follow-the-sun support and delivery models across distributed teams.

Recommended Qualifications

• 4+ years of relevant experience
• Experience in systems analysis and programming of software applications
• Experience in managing and implementing successful projects
• Working knowledge of consulting/project management techniques/methods
• Ability to work under pressure and manage deadlines or unexpected changes in expectations or requirements

Education

• Bachelor’s degree/University degree or equivalent experience

This job description provides a high-level review of the types of work performed. Other job-related duties may be assigned as required.

Job Family Group

Technology

Job Family

Applications Development

Time Type

Full time

Primary Location Full Time Salary Range

$94,300.00 - $141,500.00

Most Relevant Skills

Please see the requirements listed above.

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.

This job opening is for an existing job vacancy.

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